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Fix list for IBM MQ Version 9.1 LTS

Product Readmes


IBM MQ provides periodic fix packs for release 9.1. The following is a complete listing of available fixes grouped by fix pack.


Release Date Total number of APARs Security APARs HIPER APARs
IBM MQ Fix Pack 2 June 2021 88 6 7
IBM MQ Fix Pack 7 December 2020 101 9 4
IBM MQ Fix Pack 20 July 2020 70 10 7
IBM MQ Fix Pack 6 April 2020 91 9 6
IBM MQ Fix Pack 4 December 2019 116 11 29
IBM MQ Fix Pack 31 July 2019 102 14 12
IBM MQ Fix Pack 9 April 2019 120 8 8
IBM MQ Fix Pack 15 November 2018 55 3 7

To download IBM MQ Fix and Refresh Packs follow this link.

Vulnerability risk information for IBM MQ can be found at Security Bulletin for WebSphere MQ

IBM MQ planned maintenance release dates

Glossary of Terms

Example table

Security APAR HIPER APAR APAR Description
AB12345 Example of Security APAR
ZY98765 Example of a HIPER APAR

Fix Pack IBM i, Windows, UNIX®

(Last modified: June 2021)

Security APAR HIPER APAR APAR Description
IT29638 The DISPLAY CHSTATUS command output for an AMQP client instance always shows AMQPKA(0) instead of the actual value
IT29963 The JMSAdmin tool is partially shipped by the redistributable Java client "{version}"
IT30755 IBM MQ web console browse messages panel does not show 1024 characters of message data
IT31885 Output from the amqrfdm utility shows invalid value on the "Exp" or "Upd" attributes for a cluster object
IT31909 MQTT Channel ends unexpectedly due to NullPointerException
IT32137 A valid windows user ID with a space character in 12th position fails to connect to queue manager
IT32321 Intermittent hang in dltdrsecondary command when run after making the queue manager secondary on the HA node
IT32554 Channel exits written in Java are unable to access the local address used by the channel
IT32860 Misleading errors reported by the redistributable client when user does not have write permissions for $HOME
IT32871 A queue manager terminates due to a SIGSEGV within the execution controller process amqzxma0
IT33209 dltdrprimary command does not completely remove DR definition from HA secondary appliance.
IT33213 IBM MQ Appliance link aggregation interface goes down when LLDP is enabled on network switch
IT33261 The amqrmppa process terminates with memory exception in rppAdjustPool or rppLockPool
IT33439 Memory leak in IBM MQ when using AMS
IT33500 IBM MQ-JMS Connection's ExceptionListener is not called when a JMS Session's TCP/IP socket is disconnected
IT33539 WeakCiphersEnabled field is not shown when dumping the channel configuration in FDC records
IT33575 ProbeID XC130031 from kpiCancelWaiter when ending the queue manager
IT33648 Runmqsc console on RHEL 8 reports error AMQ8521I: command completion and history unavailable
IT33668 MQCTL does not function as expected when issued using MQOP_SUSPEND option
IT33852 IBM MQ Classes for JMS generate NullPointerExceptions when an application is accessing a queue or a topic
IT33893 The output of 'dmpmqaut -p [Prinicpal] -e' is misleading when the IBM MQ authority is defined at the group level
IT33901 Performance degradation when using extended message selection
IT33929 If an rdqmadm process is interrupted before completion then subsequent rdqmadm commands fail with AMQ3793E
IT34095 The NETTIME parameter for the DISPLAY CHSTATUS command has unexpectedly high values
IT34127 Additional diagnostics to investigate a SIGSEGV error reported by an amqrmppa process
IT34131 The mqrc utility incorrectly modifies timestamp values when converting error logs between text and JSON format
IT34336 MQGET fails with 2004 MQRC_BUFFER_ERROR
IT34350 MFT File-To-Message transfer with delimiter greater than the default length generates two 0 byte messages
IT34358 Displaying channel status for IBM MQ Telemetry channels using filter on CONNAME attribute may fail with NullPointerException
IT34389 Duplicate stanzas in an IBM MQ client or queue manager configuration file are not processed
IT34419 IBM MQ Appliance queue manager failover is unsuccessful if the queue manager file system is in use by another process
IT34436 Zero byte content IBM MQ messages get generated during MFT File to Message transfers when using a prefix delimiter
IT34463 Administrative REST API parameter ibm-mq-rest-gateway-qmgr cannot be used with the REST API discovery feature, and CORS.
IT34486 MFT error message 'BFGSS0024E' does not provide details on which object it received the MQI error message.
IT34488 IBM MQ listener runqmqlsr not accepting new connections and also consuming high CPU
IT34491 Files under the "java/jre64" directory have incorrect permissions after removing an IBM MQ fix pack on Solaris
IT34533 IBM MQ Appliance HA queue manager reports partitioned state after the appliance is administratively shut down
IT34573 The FTETopicSubscriptionCollector section of fteRAS takes a longtime to complete.
IT34591 Destination agent generates an ABEND file when processing a managed transfer that has timed out
IT34623 Managed File Transfer agent abends after migrating from version or earlier.
IT34684 JMSCC0108 reported by the IBM MQ resource adapter references the wrong version of the product documentation.
IT34685 The dltmqm command may fail if run on multiple RDQM nodes concurrently
IT34737 IBM MQ Appliance HA Queue manager configured for DR restarts/fails over unexpectedly
IT34822 A non-persistent message may be discarded if a waiting async MQGET times out while an MQPUT is delivering to it
IT34850 Redistributable MFT command 'fteCreateEnvironment' repeatedly prepends to the PATH environment variable
IT34895 After failure in IBM MQ appliance makedrsecondary command the HA/DR Queue manager failed to start on second node
IT34899 IBM MQ Appliance "service show component-firmware" command does not report network module firmware version information
IT34967 IBM MQ Classes for JMS BROKERPUBQMGR property validation failure with asterisk characters
IT34978 Managed transfers get stuck if they are unable to connect to a file server using the SFTP protocol.
IT35053 IBM MQ MFT source agent generates an FFDC with PROBE ID FFDC_051 after entering transfer recovery
IT35074 Potential memory leak during of cached resources in multithreaded asynchronous consume client application
IT35078 Improve error message when a certificate does not meet key length requirements
IT35222 IBM MQ MFT: NullPointerException thrown by CommandHandler thread with FFDC probe ID FFDC_001
IT35262 Call to xa_open fails with XAER_INVAL '-5 in XA configuration with TXSeries
IT35281 Unable to apply fix pack created by crtmqfp in RHEL 8.x
IT35322 Queue resource monitor submits two message-to-file transfers for the same message or message group on consecutive polls.
IT35342 Upgrade ICU4J for IBM MQ MFT to 68.2
IT35362 Application terminates with SIGSEGV when trace is enabled for AMS operations
IT35398 SourceTransferStartExits are run twice for the same managed transfer following a network issue during negotiation
IT35440 Description is not available (security/integrity exposure)
IT35457 Description is not available (security/integrity exposure)
IT35461 AMQ6150 error message states a timeout period of zero minutes.
IT35488 Partial repository queue manager does not report "update not received" error for queue manager
IT35522 Description is not available (security/integrity exposure)
IT35582 IBM MQ MFT Message-To-File Transfer request using a protocol bridge agent (PBA) as the source agent fails silently.
IT35811 Upgrade JRE level for IBM MQ to Java for AIX, Linux, Windows, and for Solaris.
IT35834 TLS/SSL channel on distributed platform intermittently stops when partner channel is running on HPE Non Stop
IT35881 IBM MQ appliance might reload while closing an LDAP connection
IT35903 Description is not available (security/integrity exposure)
IT36123 Upgrade Apache Commons NET library for IBM MQ v9.1 LTS to the latest level
IT36124 Update the version of Bouncy Castle shipped within the IBM MQ installation
IT36125 Upgrade the Jetty libraries used by IBM MQ v9.1 for the IBM MQ Bridge to Salesforce/Blockchain
IT36126 Update the IBM MQ embedded WebSphere Liberty profile server to
IT36257 Update level of GSKit shipped with IBM MQ 9.1 LTS to
IT36258 Update level of LDAP client supplied with IBM MQ 9.1 LTS to
IT36262 IBM MQ Appliance HA synchronization might be slow after restart of one of the appliances
IT36295 Update DRBD and Pacemaker packages supplied with IBM MQ 9.1
IT36336 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.76.1
IT36383 Description is not available (security/integrity exposure)
IT36514 Update level of Libedit supplied with IBM MQ 9.1 LTS to 0:64:0 (20210216-3.1)
IT36621 Changes to IBM MQ Appliance link aggregation LLDP configuration property 
IT36796 Description is not available (security/integrity exposure)
SE74387 IBM MQ ISERIES 5724H72 option 3 installer needs to be refined.
SE74554 IBM MQ on IBM i AMS policy with certificates with mixed case components in DN.
SE74591 IBM MQ C/RPG/COBOL Client install with TLS and ONE-WAY authentication failed with private keystore
SE74794 IBM MQ operations inside IBM i transaction
SE74947 Update OpenSSL to 1.1.1i
SE75343 Update OpenSSL to 1.1.1j

Fix Pack IBM i, Windows, UNIX®

(Last modified: December 2020)

Security APAR HIPER APAR APAR Description
IJ23167 An internal error CWSMQ0286E is thrown when XMS .NET client tries to retrieve a message containing mqex folder in header.
IJ25042 If backout queue is full, XMS .NET doesn't send the messages with RFH header to dead-letter queue.
IT23170 Published messages are sent to the DLQ if API subscription destination resolves to non-local cluster queue.
IT28461 Object damage after running amqldmpa utility in STANDARD bindings mode
IT29334 IBM MQ MFT: Resource monitor RETRY behavior doesn't work
IT29565 IBM MQ client app using MQCONNX to make an SSL connection fails with FDC from xehExceptionHandler with rriCopyMQSCO on the stack
IT29662 AMQ8871E error reported when creating an authority record with authority 'crt' in an LDAP OAM configuration
IT29783 Querying queue manager status may cause performance overheads on IBM MQ appliance
IT29944 USEDLQ cluster channel attribute is not replicated across cluster members
IT30274 A managed .NET or XMS application configured with multiple connection names for a queue manager hangs on reconnection
IT30354 IBM MQ Appliance reloads if the queue manager file system is accessed using REST API during queue manager failover.
IT30545 IBM MQ .NET managed client application returns 2059 when setting certlabel in hashtable properties
IT30566 Capture additional IPMI diagnostic information in IBM MQ Appliance error report
IT31118 MQCMIT of deep queue takes a very long time to complete, leading to a transmission queue buildup
IT31225 IBM MQ Managed File Transfers from an SFTP server occasionally hang.
IT31415 FDC record with probe ID 'OP008000' is generated when runmqdlq is processing messages on the dead letter queue.
IT31458 IBM MQ client using distribution lists receives 2009 and an FDC with probe RM680078 is generated
IT31513 An FDC-generating error in xcsInitialize() caused the process to loop repeatedly writing FDCs
IT31526 Queue manager ends because of file system full and fails to start with object damage error
IT31856 Messages on SYSTEM.PROTECTION.ERROR.QUEUE cannot be processed by runmqdlq using a DESTQ rule
IT31883 IBM MQ controller process (amqzxma0) stopped due to SIGSEGV after failing to allocate a shared memory set.
IT31898 IBM MQ Appliance: 'makehaprimary' command incorrectly reports AMQ6682 error
IT31901 Memory leak in the AMS (Advanced Message Security) component of IBM MQ
IT31917 IBM MQ Explorer shows protocol value of [Unknown] in channel status of MQTT clients
IT32081 Error log incorrectly reports remote certificate validation failed when local certificate is invalid
IT32173 IBM MQ LTS "dspmqver -a" generates FDC with probe XC037005, component xcsExecProgram
IT32212 Topic handles are not closed when a Classes for Java IBM MQ queue manager disconnects
IT32247 A queue manager became unresponsive when an access violation in lcsFNCLinkAdd caused the AMQZLAA0 process to abnormally end.
IT32292 AMQ5542 message misleadingly mentions CHCKCLNT(REQDADM) when using LDAP for users or groups.
IT32294 FDC with probe ID ZD048010 from zruMetaNotify at queue manager restart.
IT32393 Object damage reported when queue file size reaches 2 TB
IT32401 Improve diagnostics for socket failures when determining IP configuration
IT32443 haregtyp /r reports incorrect error message when the command fails
IT32481 IBM MQ reports FDC RM008005/rrxStopChannel after channel reconnects and adopts previous instance
IT32491 The 'dspdrlink' command only shows output for one DR queue manager when run without a queue manager name
IT32547 Improve tracing in amqscnxc
IT32582 On Windows platform, the IIB HTTP listener process ABENDS and generates an FDC with PROBE ID ZC004040
IT32583 A managed .NET client application initializes slowly in multi-user or heavily loaded environments
IT32639 JMS ConnectionFactory property CNLIST does not work in Apache Tomcat
IT32703 ValidateAuth=No does not preserve non-default file permissions on queue manager error logs
IT32708 IBM MQ Java client application ArrayIndexOutOfBoundsException when using MQCCRED with TLS and SSLPEER
IT32772 IBM MQ Appliance setdrlink and sethalink commands do not verify if the replicationIP is assigned to a valid local interface.
IT32775 Invalid Managed File Transfer scheduled transfers cannot be deleted
IT32854 Upgrade Qpid Proton-j level for IBM MQ to Qpid Proton 0.33.6
IT32881 rdqminit command leaves behind orphaned resources if it is interrupted while it is still running.
IT32924 IBM MQ Client abends in MQCTL when accessing AMS message, generatingFDC with Probe XC130031 - Access Violation
IT32925 Update JMQI trace to remove unnecessary values from the options field
IT32935 Managed File Transfer agent restart changes the time zone of scheduled transfer time.
IT32949 Queue manager terminates due to a SIGSEGV issued for amqrrmfa process with Probe ID XC130004
IT32987 NullPointerException occurs when activation specification or WASlistener port is configured to use message retention
IT33028 An IBM MQ client receives return code 2119 "MQRC_NOT_CONVERTED" fromMQGET when an RFH buffer exceeds the SSL transmission size limit
IT33097 CVE-2020-4528
IT33147 Running the endmqm command results in munmap_chunk(): invalid pointer error
IT33175 Managed File Transfer protocol bridge agent generates an FDC when fteShowAgentDetails is run with the -d option
IT33189 IBM MQ MFT fteCreateTransfer from a queue results in a zero byte file if the source queue is empty.
IT33347 AMQ3879E and AMQ3812E errors when creating RDQM
IT33352 Additional version checks on internal logger data structures
IT33385 Inadequate error message is reported when dltdrprimary command fails due to HA queue manager started with strmqm -ns option.
IT33398 FDC with Probe KN432051 from kpiAppSignalTask reporting missing signalapp.xx files.
IT33424 Event message is not generated when a CLUSRCVR channel is stopped
IT33457 The crtdrprimary command fails on the IBM MQ Appliance due to failed actions from the old definition
IT33490 Triggered channels slow to start and messages build up on SYSTEM.CHANNEL.INITQ
IT33552 Using IBM MQ Explorer against IBM MQ v9.0 z/OS to create a channel does not enable the selection of certain SSL ciphers.
IT33590 Resource adapter deployed into embedded WebSphere Liberty profile started through WebSphere Liberty profile SPIs cannot make secure connections to IBM MQ.
IT33612 IBM MQ Appliance HA initialization error during reboot
IT33769 MQGET returns MQRC_NO_MSG_AVAILABLE (2033) to browser when a message is available
IT33772 CVE-2020-4682
IT33880 CVE-2020-12762
IT33881 CVE-2018-16878, CVE-2018-16877, CVE-2019-3885 for IBM MQ and IBM MQ Appliance
IT33894 SourceTransferStartExits can be invoked twice for the same managed transfer.
IT33914 Update the IBM MQ embedded angular.js to 1.8.0
IT34002 IBM MQ adding/removing features from a Windows installation can damage the Web Console installation.
IT34071 Update level of JSON-C supplied with IBM MQ 9.1 and 9.2 to 0.15-20200726
IT34105 IBM MQ Explorer License on Windows is redirected to IBM MQ 9.0 content
IT34218 Upgrade JRE level for IBM MQ 9.1 to Java for AIX, Linux, and Windows, for Solaris.
IT34219 Update Bouncy Castle shipped by IBM MQ
IT34220 Upgrade COMETD shipped with IBM MQ 9.1 for Linux (X86-64)
IT34251 Upgrade Apache Ant for IBM MQ 9.0 and 9.1 to the latest level (1.10.9)
IT34252 Upgrade Apache Commons IO for IBM MQ 9.1 to the latest level (2.8.0)
IT34253 Update the IBM MQ embedded WebSphere Liberty profile from to + PH29368
IT34385 Update level of GSKit shipped with IBM MQ 9.1 LTS to
IT34399 Managed File Transfer agent intermittently generates an FDC when fteShowAgentDetails is run with the -d option
IT34416 WebUI console.log file can fill encrypted storage on the IBM MQ Appliance
IT34455 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.72.0
IT34470 Update DRBD and Pacemaker prerequisite packages supplied with IBM MQ 9.1 for RDQM support
IT34411 Update DRBD kernel modules supplied with IBM MQ 9.1 and 9.2 to DRBD version 9.0.25
IT34473 Description is not available (security/integrity exposure)
IT34485 Description is not available (security/integrity exposure)
IT34570 Description is not available (security/integrity exposure)
IT34691 IBM MQ Appliance power outage may result in the IBM MQ Web Console reporting 'Error 500: Internal error'
IT34814 CVE-2020-4581, CVE-2020-4580, CVE-2020-4579
IT34927 Description is not available (security/integrity exposure)
PH26041 Adding support for 64-bit JVMS into the IMS adapter - Java
PH26255 IBM MQ JMS in CICS JVM server working with OSGI bundles fails with RC2058 MQRC_Q_MGR_NAME_ERROR.
PH26607 IBM MQ MFT 'fteListAgents' command throws a java.lang.NullPointerException
SE71857 Using MQRC to convert an IBM MQ error log file to JSON format results in corrupted Japanese characters on IBM i
SE73841 IBM MQ TLS Channel failure at IBM i V7.4
SE73865 5725A49 IBM MQ V9.1 "C" Client fails to run AMQRSSLC
SE73922 Enable IBM MQ to use the default JRE on IBM i
SE73962 IBM MQ V9.1 Frequent Internal Checkpointing on IBM i
SE74522 Update OpenSSL to 1.1.1h

Fix Pack IBM i, Windows, UNIX®

(Last modified: July 2020)

Security APAR HIPER APAR APAR Description
IT25989 Enhancements to runmqras utility
IT26021 XMS .NET multithreaded async client consumer application fails to process poison messages in bindings mode.
IT27465 Performance improvement in SVRCONN channel when result is client authentication failure
IT27711 Trace enhancements for the IBM MQ Classes for Java/JMS
IT27745 Incorrect error handling by amqrmppa process while using message selectors
IT28799 IBM MQ FDCS with Probe IDs RM215010 and RM220005 are written after cluster transmission queue is set to NOSHARE
IT28841 Running fteShowLoggerDetails generates a BFGUB0038E error, indicating that 'wmqfte.queue.manager.port' is not set.
IT30601 Performance implications of IT28621 changes
IT30847 IBM MQ Managed .Net client connecting to queue manager fails intermittently with MQRC 2195
IT31238 IBM MQ Classes for Java application cannot get NameValueData from RFH2 when using CCSID 1200 with little endian encoding
IT31428 IBM MQ control program dspmqtrn -e can incorrectly output some internally-created XA transactions
IT31430 FDC record with ProbeID XC022001 is reported after upgrading the IBM MQ Appliance firmware
IT31529 .NET client connecting with a TLS enabled channel fails with RC=2538 when using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
IT31562 IBM MQ fails to write to queue manager error log files after ERROR_SHARING_VIOLATION on Windows.
IT31633 Managed transfers come out of recovery and immediately fail with a BFGIO0410E error.
IT31663 CVE-2020-4592 for IBM MQ and CVE-2020-4592 for IBM MQ Appliance
IT31684 After strmqm -ns, OAM can write corrupted data records to its persistent store
IT31703 MQRC 2085 generated if SYSTEM.ADMIN.CONFIG.EVENT is a cluster queue and not a qlocal
IT31733 IBM MQ 9.1 Appliance displays wrong error message if it fails to create HA queue manager due to full errors file system
IT31787 CVE-2020-4319 for IBM MQ and CVE-2020-4319 for IBM MQ Appliance
IT31799 IBM MQ Appliance: crtdrprimary hangs when issued against an ended HA queue manager with a HA floating IP
IT31820 PipeLineLength=2 channel ends and writes FDC with probe XC006001including error code xecS_I_PRIVATE_MEMORY_ERROR
IT31832 fteCreateMonitor ignores any monitor metadata when re-creating a monitor from an input file using the -ix parameter
IT31843 Using IBM MQ Explorer against z/OS to create a channel does not enable the selection of certain SSL ciphers.
IT31900 IBM MQ Classes for JMS application unable to consume a JMS MapMessage containing Unicode escape sequences
IT31958 Upgrade Apache Commons IO, Lang, Logging & Net JAR libraries for IBM MQ MFT
IT31978 Upgrade ICU4J for IBM MQ 8.0, 9.0, and 9.1 to the latest levels
IT31979 Upgrade Apache Commons FileUpload to 1.4 IBM MQ
IT31987 MQRC error 2195 reported for empty mqclient.ini on Windows
IT32036 Allow ALTER CHANNEL() CHLTYPE(AMQP) commands even when AMQPCAP is NO
IT32052 dmpmqaut did not output an authority record for a specific object name, even though it existed in the OAM
IT32141 CVE-2020-4465
IT32179 Upgrade Managed File Transfer to use an IBM MQ-specific version of JSch
IT32203 IBM MQ Appliance commands fail with error AMQ6558E
IT32233 IBM MQ logger does not check the eye catcher or version before using the log record
IT32234 CVE-2019-1551
IT32258 Memory leak in the amqzlaa0 process when the queue manager is processing MQSUBRQ call for a retained publication
IT32261 AMQ9999 is reported when an unrelated channel reports AMQ9645
IT32263 Add "DISPLAY CONN(*) TYPE(*) ALL" to IBM MQ runmqras
IT32320 IBM MQ Appliance M2001 alert LED in the front panel shows incorrect status.
IT32337 Managed transfers run slowly after upgrading to IBM MQ 9.1 LTS
IT32434 Exclude /sys file system entries from IBM MQ Appliance error report
IT32549 IBM MQ 9.1 incorrectly reports the OS as 'Windows server 2016' while running on 'Windows server 2019'
IT32630 IBM MQ Appliance reports high memory usage due to memory leak in corosync process
IT32659 IgnoreSeqNumberMismatch writes an AMQ9703 error for each message
IT32673 MSCS Cluster log reports error 126 MQ DLL not found, but the correct error is Resource Name is unknown
IT32712 Supply DRBD kmod 9.0.22_3.10.0_1127-3PTF with IBM MQ 9.1 LTS
IT32745 IBM MQ Appliance hang followed by reload due to WATCHDOG restart
IT32765 CVE-2020-4203
IT32787 Upgrade JRE level for IBM MQ 9.1 to Java for AIX, Linux, Windows, Solaris.
IT32789 Update the IBM MQ embedded WebSphere Liberty profile from to
IT32824 Upgrade CometD shipped with IBM MQ 9.1 for Linux (X86-64)
IT32834 Apache Ant as used by IBM MFT, updating to version 1.9.14
IT32835 Update Bouncy Castle shipped by IBM MQ 9.1
IT32898 Update level of GSKit shipped with 9.1 LTS to
IT32899 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.71.1
IT32900 Update level of json-c supplied with IBM MQ 9.1 LTS to 0.14
IT33013 RDQM HA: Incorrect CRTMQM call on replacement node can delete a queue manager
IT33099 CVE-2020-4498
IT33101 CVE-2018-18066, CVE-2020-5208
IT33103 CVE-2018-20852
IT33104 CVE-2015-2716
IT33106 CVE-2015-8035, CVE-2017-15412, CVE-2017-18258, CVE-2018-14567
IT33159 Update DRBD and Pacemaker prerequisite packages supplied with IBM MQ 9.1 for RDQM support
IT33239 Reduction of default transfer limit for GCM cipherSpecs to 2^24.5 TLS records
IV96489 XMS.NET doesn't allow shared subscriptions even when CLONESUPP property is enabled
PH19731 Managed File Transfer source agent abends after a managed transfer resumes after coming out of recovery
SE72996 MFT 9.0 slip install over version 8 might leave old version 8 files in IFS
SE73143 Error log for runmqsc -c not written to system log on IBM i
SE73540 Update OpenSSL to 1.1.1g

Fix Pack IBM i, Windows, UNIX®

(Last modified: April 2020)

Security APAR HIPER APAR APAR Description
IT26395 Non-ascii UTF-8 characters in messages put by the messaging RESTAPI are replaced with '?' characters
IT26512 CHLAUTH USERMAP rules not applied when ChlauthEarlyAdopt=y and client user missing +connect
IT27173 AMQPKA attribute incorrectly shown as being in seconds
IT27694 SVRCONN channel 'stopped' status is ignored after queue manager restart allowing clients to connect
IT28019 CVE-2020-4466 for IBM MQ and CVE-2020-4466 for IBM MQ Appliance
IT28539 XMS .NET incorrectly require "get" authority on the target cluster queue for an alias queue
IT28870 IBM MQ v9 probe ID AO221001 generated by amqzmuc0 process
IT28907 JMS 2.0 DeliveryDelay performance issue
IT29089 IBM MQ 9.1 queue manager migrated from IBM WebSphere MQ 7.1 generates FDC AD028008during startup
IT29107 The "crtmqdir -a" command reports file errors under /var/mqm directory after fix pack installation
IT29139 PCF response messages are written to the dead letter queue when .NET application uses PCF commands.
IT29154 Description is not available (security/integrity exposure)
IT29180 Adjust schedule time for daylight savings
IT29254 XMS Managed .NET application takes several seconds to re-establish a connection with a queue manager after a failover
IT29354 Object damage when the queue file reaches 2TB
IT29560 Some invocations of the dmpmqcfg utility reports AMQ5705E error
IT29667 Installation of IBM MQ client for Windows fails with AMQ4739
IT29679 Queue manager ends with memory exception in rppFindPID in amqrmppa
IT29696 IBM MQ Appliance: HA group cannot be created after appliance is reinitialized by factory reset.
IT29806 IBM MQ clients cannot process a CCDT file created by a newer queue manager
IT30004 The misleading message "No matching authority records" is reported when the dmpmqaut command is run with the '-e' switch
IT30032 Adding a custom classpath in the service.env file does not work as documented with the IBM MQ Telemetry service.
IT30034 Protocol bridge agent configuration error is not reported on thefteCreateTransfer command.
IT30096 IBM MQ .NET returns 2059 error instead of returning 2537 and 2538
IT30224 Queue manager crashes then cannot be restarted: FDC with probe HL080077
IT30243 Managed File Transfer source agent generates FDC containing message "Failed to queue a delete open file request for file"
IT30255 IBM MQ Classes for Java/JMS hang when trace is enabled for multiple threads running on different classloaders
IT30348 Allow suppression of TCP/IP bad data FDCs
IT30391 IBM MQ Appliance queue manager did not fail over to secondary node after resolving partitioned state
IT30482 IBM MQ Telemetry service does not stop if is configured to enable remote JMX monitoring.
IT30487 dmpmqcfg generates incorrect commands for IBM MQ for z/OS queues that are in a Queue Sharing Group (QSG)
IT30519 AMQ8101S: IBM MQ error (0) has occurred when deleting RDQM QMGR.
IT30603 'AMQ4172E There was an error when trying to set or retrieve information' is displayed when stopping channel from IBM MQ Explorer
IT30605 CVE-2020-4310 for IBM MQ and CVE-2020-4310 for IBM MQ Appliance
IT30610 Cluster channel is put into STOPPED state after running command REFRESH CLUSTER REPOS(YES)
IT30633 IBM MQ Managed File Transfer tracing enhancements for SFTP transfers
IT30634 IBM MQ FDC with probe ID XC130003 generated when disconnecting from queue manager
IT30637 No system name results in FDCs containing probe ID DP016021beinggenerated every minute.
IT30668 IBM MQ Classes for Java/JMS trace is not produced if an invalid character in the trace output file name is used.
IT30670 Data synchronization takes excessive time to complete for Replicated Data Queue Managers.
IT30677 IBM MQ Telemetry channel stops and generates FDC with Probe ID XR014005 when multiple MQTT clients disconnect simultaneously
IT30710 CVE-2020-4267 for IBM MQ and CVE-2020-4267 for IBM MQ Appliance
IT30721 FDC with probe ID XC130031 (Access violation/SIGSEGV) reported during client application disconnect
IT30722 IBM MQ client reports "AMQ9671:The PKCS #11 token password specified is invalid" when token password is correct
IT30738 v7.0 JMS client application connecting to queue manager causes AMQ9504 PROTOCOL ERROR and FDC with probe ID RM680037
IT30745 Improve AMQ9637 error message when client passes no certificate
IT30751 Java application remains connected to queue manager if PCFAgent.connect() throws an exception
IT30754 The IBM MQ fix pack installer incorrectly reports resources in use when an authority error is encountered
IT30768 Managed transfers fail with a BFGBR0119E message, where the BFGBR0119E message stops after the word "because".
IT30785 IBM MQ Appliance reports Invalid log type parameter for parse and mpgw log categories
IT30812 IBM MQ resource adapter IVT sample application "wmq.jmsra.ivt.ear" fails to deploy to WebSphere Application Server
IT30843 MQTT client connecting to a cluster queue manager results in client FDCs indicating MQRC_CLUSTER_RESOLUTION_ERROR
IT31027 After applying maintenance channel reports AMQ9514 even though AdoptNewMCA function is enabled
IT31067 amqsrua sample program fails if PSMODE is set to COMPAT
IT31094 IBM MQ for Linux LTS v9.1 "MQSeriesRuntime" RPM package should no longer state that it provides "/bin/sh"
IT31166 JMS FDC generated when bad file path is specified for the property ""
IT31177 Update RDQM dependencies supplied with IBM MQ 9.1 LTS to DRBD version 9.0.22 and Pacemaker 1.1.20
IT31283 CVE-2017-16231
IT31286 On IBM MQ Appliance the show interface output might not show the network interfaces.
IT31302 Unable to delete CHILD / PARENT from publish/subscribe hierarchy when the queue manager CCSID is 1208
IT31311 MQRC_HCONN_ERROR, FDC with probe ID RM632001 generated from a call to reqGetConn
IT31336 CVE-2020-4375
IT31349 CVE-2020-4376 for IBM MQ and CVE-2020-4376 for IBM MQ Appliance
IT31362 MQRC_XQH_ERROR (2260) when re-queueing messages with an MQXQH
IT31399 A newly created or an existing Replicated Data Queue Manager (RDQM) does not start after upgrading to IBM MQ fix pack.
IT31406 IBM MQ failure data capture (FDC) record has truncated trace history
IT31412 Update level of GSKit shipped with IBM MQ 9.1 LTS to
IT31420 IBM MQ Appliance generates truncated error report
IT31431 IBM MQ Appliance createcert and createcertrequest commands truncate last character of DN if escape character present
IT31459 userrestore command on IBM MQ Appliance fails with AMQ6650
IT31503 Upgrade JRE level for IBM MQ 9.0 and 9.1 to Java for AIX, Linux, Windows, Solaris.
IT31552 RDQM Preferred Location not being used correctly for stopped queue managers or when one node is down.
IT31578 Allow usernames in CHLAUTH rules to be matched case-insensitively
IT31623 IBM MQ Classes for JMS incorrectly treat messages with headers that have a CCSID field set to -2 as poison messages.
IT31768 Upgrade Jetty, CometD and SLF4J shipped with IBM MQ 9.1 for Linux (X86-64)
IT31772 Update the IBM MQ embedded WebSphere Liberty profile from v19.0.0.9 to v19.0.0.12
IT31794 Upgrade Apache Commons BeanUtils & Apache Commons Digester JAR levels for IBM MQ
IT31871 Update level of Libedit supplied with IBM MQ 9.1 LTS to 0:63:0 (20191231-3.1)
IT31872 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.68.0
IT31873 Update level of LDAP client supplied with IBM MQ 9.1 LTS to
IT31911 CVE-2018-19519 & CVE-2019-11745
IT31946 Update level of GSKit shipped with IBM MQ 9.1 LTS to
IT32030 IBM MQ Appliance: RBM CLI login failures could cause unexpected appliance reload
IT32055 CVE-2020-4320 for IBM MQ and CVE-2020-4320 for IBM MQ Appliance
PH19599 MFT failed to recall HMS migrated target data set with OBTAIN DSNERROR RC=4 (0X4)
SE70886 MQM400-Validation of signed AMS message fails with AMQ9070
SE72277 RUNMQCHI AMQ9509E: Program cannot open queue manager object. Reason code 2500
SE72391 Update OpenSSL to version 1.1.1d on IBM i
SE72595 Java MQCONNX fails with CC=2, RC=2009 in non-threaded environment on IBM i
SE72648 Agent process AMQZLAA0 MCH6902
SE72842 CHGMQMCHL couldn't set SCYUSRDATA with string starting with "*"

Fix Pack IBM i, Windows, UNIX®

(Last modified: December 2019)

Security APAR HIPER APAR APAR Description
IJ10496 XMS .NET applications throw mqrc 2012 if session.close is issued within the transaction and XMS is participating in XA transactions
IT20958 AMQ5531 is reported during AMQP service startup if queue manager uses LDAP authentication
IT24272 Unexpected return codes from DISPLAY PUBSUB and DISPLAY POLICY MQSC commands
IT25059 After REFRESH CLUSTER, FDCs with probe RM702021 component rrmCheckSubsForQMgr appear
IT25846 Queue manager writes FDC with Probe RN194031 rrmCheckSubs when Full Repositories are both demoted.
IT26575 MFT File Loggers fail to connect to queue manager with MQCSP authentication and password greater than 12 characters.
IT26835 SIGSEGV memory exception inside ldap_return_one_msg(). Queue manager becomes unstable
IT27439 Setting IBM MQ client CCSID to 1200 causes connections to fail with 2059 or 2540
IT27488 Authorization error on trying to connect AMQP client to service when using LDAP for user authentication
IT27631 Provide a command to obtain IBM MQ call stacks on the IBM MQ Appliance if a hang occurs.
IT27736 Insufficient diagnostic information in FDC with probeID DP016021from component dpcInitDaemon
IT27752 amqldmpa ending with memory exception (e.g. SIGSEGV) followed by OS pid reuse causes queue manager hang
IT27773 Allow dynamic tracing of LDAP client library code shipped with IBM MQ.
IT27834 A cluster repository loses sight of some other queue managers after a refresh cluster is done
IT27950 IBM MQ resource adapter fails to match a ManagedConnection after it was previously used in a transaction that was rolled back
IT27986 Using MQRC to convert an IBM MQ error log file to JSON format results in corrupted Japanese characters
IT28044 IBM MQ Appliance: The createbackupfs command returns syntax error
IT28238 The output of the runmqsc command "alter qmgr ?" is not properly formatted.
IT28370 IBM MQ Appliance reloads after inquiring the status of HA queue managers.
IT28660 JMS connections failing on z/OS 64-bit when trying to use the WebSphere Message Broker adapter with the IBM MQ 9.1 JMS client
IT28694 Replicated data queue manager creation might sometimes fail on thePrimary node with AMQ3821E error.
IT28774 IBM MQ Appliance GUI error processing Management Actions
IT28808 amqspdbg is not correctly printing large numbers for totalSetSize
IT28817 Performance degradation when using JMS MessageListeners to consume non-persistent messages outside of a transaction
IT28897 IBM MQ Telemetry service fails with OutOfMemoryError after multiple MQTT V3.1.1 client takeovers
IT28932 NullPointerException when creating a JMSContext with a JTA UserTransaction
IT28937 Queue managers can become partitioned after IBM MQ Appliance shutdown and FDC with Probe ID DP138011 generated
IT28958 The uninstallRDQMsupport script fails to uninstall IBM MQ packages
IT29032 Replicated Data Queue Manager fails to start on any of the nodes.
IT29065 IBM MQ client MQCONN failure rc=2035 when shortname is sourced from Case-sensitive LDAP attribute
IT29066 AMQ3817E is returned when creating Replicated Data Queue Manager (RDQM)
IT29088 Partial FDC record written by amqzlaa0 process followed by hang or abend of that process
IT29183 Configuring floating IP address in RDQM environment may fail with AMQ3817E and AMQ3873E
IT29238 "AMQ7047E: An unexpected error was encountered by a command" received when installing the MQSeriesWeb component in Docker
IT29252 Resource adapter deployed into WebSphere Liberty profile by the JCA-1.7 feature cannot use dynamic outbound configurations.
IT29261 Unexpected error messages reported by dsphagrp command
IT29281 IBM MQ process hangs after memory exception SIGSEGV
IT29329 HTTP error 500 is received when trying to access IBM MQ console using port 443.
IT29386 IBM MQ Telemetry service fails to start, and generates an FDC with probe ID XR063035.
IT29413 IBM MQ Explorer displays queue manager startup field as "Interactive (manual)" instead of "Automatic"
IT29421 Unneeded FDC with probe AO009010 from apiCreateDynamicQueue, major error code lrcE_SECURITY_ERROR
IT29422 AMQ3873E error when attempting to add a floating IP address using the rdqmint command
IT29430 IBM MQ 9.1: runmqras does not collect IBM MQ software tag file information
IT29434 An IBM MQ Classes for JMS application hangs when using the automatic client reconnect function
IT29442 Memory exception in atmRecoveryAcquireDataMutex followed by Object Damage error AMQ7472
IT29451 MQPUT fails with MQRC_CLUSTER_RESOLUTION_ERROR (2189) but the rc should be MQRC_OBJECT_CHANGED (2041)
IT29472 strmqm fails with xecP_E_ACCESS_DENIED after system reboot
IT29473 Running "endmqm -s" on RDQM queue managers leaves them outside of HA control.
IT29480 High CPU observed in amqzmur0 or amqzmuc0 processes when using SuppressMessage tuning attribute.
IT29497 IBM MQ Appliance: Expose "http-convert" logging target category
IT29528 Deadlock in publish/subscribe followed by queue manager hanging with LONG_LOCK_WAIT FDCs
IT29566 An MFT resource monitor with a NoMatch trigger condition fails to submit the monitor task and generates an FFDC
IT29602 The AMQ9288 message and documented limit of TLS records sent are incorrect
IT29612 IBM MQ .NET client sends incorrectly aligned protocol flow
IT29659 IBM MQ Explorer logs a "Widget is disposed" error
IT29692 IBM MQ traces the wrong byte position for the failing character if data conversion fails
IT29695 SIGSEGV within function rfxAddCLQ and queue manager will not start
IT29716 amqrmppa terminates with MQRC_SYNCPOINT_NOT_AVAILABLE followed by an error in MQDISC
IT29719 dmpmqcfg for subscriptions is missing some '+' for DEST, DESTQMGR and DESTCORL.
IT29729 An IBM MQ Classes for JMS application might hang when using automatic client reconnect after network interruptions
IT29738 IBM MQ 9.1: Performance degradation when large number of subscriptions use selectors
IT29787 MQMD.UserIdentifier is not space-padded if the user was looked up from LDAP
IT29798 CVE-2019-4614
IT29811 IBM MQ MFT: Transferring files to a destination Protocol Bridge Agent fails with error BFGBR0119E.
IT29837 RDQM synchronization may become extremely slow or fail when resuming a suspended node.
IT29838 Add charts (widgets) to the IBM MQ 9.1 console generates FDC referencing XC130004 from amqzlsa0
IT29839 CVE-2019-4655
IT29854 IBM MQ Console chart widgets stop updating
IT29868 Allow IBM MQ AMS applications to use GSKit in non-FIPS mode
IT29902 An IBM MQ MFT source agent enters recovery when an invalid destination agent QMgr is specified on a transfer request
IT29910 Update the JSch library version shipped with IBM MQ for the IBM MQ Managed File Transfer for SFTP transfers
IT29973 Enhance tracing in the IBM MQ Explorer Managed File Transfer plug-in when determining agent status.
IT29978 IBM MQ Console creates multiple non-durable subscriptions for the same chart widgets.
IT30058 Channel status "STOPPED" was not saved so after restarting the queue manager it showed "RETRYING"
IT30070 CVE-2019-4560
IT30074 Improve channel detection of socket errors
IT30124 Queue manager unavailable under high load. Reports AMQ6150: IBM WebSphere MQ semaphore is busy
IT30127 IBM MQ Trigger monitor for Windows produces many FDC records if console code page is changed
IT30146 Channel status for SVRCONN channels not being remembered after queue manager restart
IT30148 An IBM MQ MFT agent running a resource monitor hangs when in recovery
IT30159 Setting the "traceEnabled" configuration property to true on the IBM MQ resource adapter does not enable trace
IT30160 Queue manager can show incorrect LDAPCONN QMSTATUS when using IDPWLDAP authinfo object
IT30207 Upgrade JRE level for IBM MQ 9.0 and 9.1 to Java for AIX, Linux, Windows, Solaris.
IT30234 Message delivery to an MDB stops when using the IBM MQ resource adapter, later resulting in the JEE server hanging on shutdown
IT30241 IBM MQ MFT error code BFGCL0181I is designated as information when it should be error
IT30267 After REFRESH CLUSTER the DISPLAY CLUSQMGR output lists more queue managers than it should
IT30275 Update IBM MQ Java SE common services component to use eight-digit thread identifiers in trace
IT30293 Update Bouncy Castle .jar files as embedded within the IBM MQ installation
IT30321 IBM MQ JMS poison message handling fails with messages using little endian encoding, MQMD.encoding = 0x222
IT30366 Truncation of queue manager/queue names in AMQ9785 message
IT30367 Inconsistent MQSC output produced by dmpmqcfg
IT30371 IBM MQ might return incorrect values for accounting or statistics AverageQueueTime
IT30396 CVE-2018-14348, CVE-2018-0495 CVE-2018-12404, CVE-2018-0734 CVE-2019-1559, CVE-2019-9511 CVE-2019-9513, CVE-2019-1563 & CVE-2019-1547
IT30490 CVE-2019-11479, CVE-2019-11478, CVE-2019-11477 & CVE-2018-15473
IT30413 Use of the sample IBM MQ MFT ProtocolBridgeCredentials.xml file results in a parsing error reported in the agent's event log
IT30429 CVE-2019-4285, CVE-2019-4305, CVE-2019-4304, CVE-2019-9515, CVE-2019-9518, CVE-2019-9517, CVE-2019-9512, CVE-2019-9514, CVE-2019-9513, CVE-2019-4441
IT30457 Upgrade Jetty, CometD and SLF4J shipped with IBM MQ 9.1 for Linux (x86-64)
IT30464 dspmqver returns wrong path for Java on IBM MQ 9.1 for Windows
IT30479 High-CPU issue in amqzmuc0 and media recovery LSN not moving forwards
IT30581 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.66.0
IT30582 Update level of LDAP client supplied with IBM MQ 9.1 LTS to
IT30585 Update DRBD kernel modules supplied with IBM MQ 9.1 LTS to DRBD version 9.0.20
IT30606 Update level of GSKit shipped with IBM MQ 9.1 LTS to
IT30614 crtmqm and mqcli commands fail after running userrestore in a new or reinitialized(factory reset) IBM MQ Appliance.
IT30649 CVE-2019-4656
IT30667 The endmqm command does not wait for the AMQP service to end.
IT30707 IBM MQ Appliance reloads when trying to log an event against a disabled SNMP log category
IT30828 CVE-2017-11462
IT30829 CVE-2019-4620
IT30830 CVE-2019-4619
IT30904 IBM MQ Appliance reloads after crash on SNMP component
IT30928 CVE-2019-4719
IT30974 IBM MQ Appliance queue manager status commands return with UNKNOWN status
IT30975 IBM MQ Appliance unexpectedly reloads (WATCHDOG RESTART) causing queue managers to go into partitioned state.
IT31081 IBM MQ Appliance reloads following a SIGSEGV exception in HTTP component
IT31144 Supply JDBC libraries for Oracle 18c and Oracle 19c on Windows

Fix Pack IBM i, Windows, UNIX®

(Last modified: July 2019)

Security APAR HIPER APAR APAR Description
IJ12535 FDC with probe ID DN121701 reported by MQManagedReconnectableThread.Run()
IJ12614 XMS .NET application doesn't honor header compression properties set in the application for unmanaged mode.
IT20943 An IBM MQ JMS MessageConsumer.receive(long) call might not return immediately when closing the consumer.
IT24805 Profile name '**' created on IBM MQ Appliance on UNIX platforms prevents IBM MQ Console authentication records from displaying
IT25636 Inadequate error message is reported when RDQM configuration fails due to incorrect file permission.
IT25878 AMQ9777 error message not being reported if user is blocked by CHLAUTH rule and ChlAuthEarlyAdopt is enabled
IT25916 CVE-2019-4261
IT25954 Not all reconnectable connections from the same client reconnect after abnormal queue manager termination
IT26040 Running command "mq" in config mode causes IBM MQ Appliance to reload.
IT26389 IBM MQ client application reports memory access exception in ChannelReceive thread.
IT26410 With CHAD enabled a new SVRCONN channel results in AMQ9498: The MQCD structure supplied was not valid.
IT26614 IBM MQ dot net (.NET) client channel ends abnormally when the heartbeat (HBINT) is reached
IT26699 AMQ9544 error message is incorrectly reported in a scenario where AMQ9527 should be reported
IT26868 IBM MQ client fails to connect to queue manager using the second IP address in CONNAME with client using CCDT
IT27021 .NET client application connecting with elliptical curve cipher suite fails with MQRC_Q_MGR_NOT_AVAILABLE
IT27085 IBM MQ Appliance WebUI does not show object status data
IT27169 RDQM queue manager does not fail over if a symbolic link is used for the data directory (/var/mqm).
IT27177 IBM MQ Dot Net application sets incorrect NameValueLength field in MQRFH2 when NameValueData has special characters
IT27271 Messages build up on SYSTEM.MQTT.PERSISTENT.STATE queue with multiple MQTT client takeovers in a short time period
IT27273 IBM MQ client applications configured for reconnection do not reconnect when the queue manager fails over using MSCS.
IT27352 IBM MQ FDC XC076012 "AMQ6047E: Conversion not supported." was created during non-English installation
IT27359 CVE-2018-1661, CVE-2018-1666, CVE-2018-1668, and CVE-2018-0734
IT27403 AMQ9213: A communications error for Unexpected flow
IT27407 HA queue manager configured for DR fails to start after disabling and re enabling DR interface.
IT27478 IBM MQ Appliance: mqcli abnormally terminates if cli timeout is set to nonzero value.
IT27490 Channel Retry does not function correctly if PING CHANNEL is executed while the channel is in retry state.
IT27639 IBM MQ Appliance IPMI Serial-Over-LAN session from ipmi tools may be left open forever if not closed correctly
IT27770 When a queue manager is created using the crtmqm command, this is not reported in the system error log
IT27791 IBM MQ channel status output shows blank MCAUSER when negotiated SHARECNV value is zero
IT27846 MQRC_BUFFER_LENGTH_ERROR (2005) error message when displaying authority records in the IBM MQ Explorer
IT27849 IBM MQ async consume client might hang during MQDISC
IT27859 CVE-2019-4141
IT27882 MFT agent writes BFGAG0189W message to its event log during startup.
IT27887 IBM MQ Console 9.1 throws a NullPointerException when attempting to delete 'create authority records'
IT27924 A race condition to close a TCP/IP socket could cause TIME_WAIT status on the server
IT27932 Enhancements made to DR health check routines to prevent unnecessary failover on IBM MQ Appliance.
IT27944 IBM MQ Classes for JMS throw a java.lang.NullPointerException from JmsProducerImpl
IT27960 IBM MQ issues CO628001 ccxStageReAlloc rrcE_BAD_PARAMETER when SHARECNV(0)
IT27964 IBM MQ Appliance reports AMQ5531E messages when retrieving queue manager status through WebUI or REST
IT27974 The client user name is truncated in an AMQ9777 error message.
IT27995 The IBM MQ Classes for JMS do not invoke a message-driven bean (MDB) application if the message body is zero bytes.
IT28022 AMQ9469 in Full Repository error logs when cluster transmission queue has custom cap expiry set.
IT28036 IBM MQ Appliance DPOS diagnostics reporting failing to load certain modules
IT28062 While getting an empty message, XMS .Net applications reports CWSMQ0282E and crash.
IT28107 AMQ9513 error message doesn't include current MaxChannels value
IT28129 IBM MQ resource adapter ignores the configured temporary model queue in a WebSphere JNDI defined connection factory
IT28131 IBM MQ RDQM: The QM status on two of the three nodes is UNKNOWN due to incorrect file permission settings.
IT28153 Memory exception FDC with Probe ID XC130004 in function kqiPutMessageToSubscriber if subscriber queue is put-inhibited.
IT28160 Update the DRBD kernel module supplied with IBM MQ 9.1 LTS to 9.0.14_3.10.0_957-1
IT28185 Crashed cluster sender channel is never restarted by repository manager
IT28193 MFT monitors stop working after an agent reconnects to its agent queue manager
IT28229 IIB embedded MFT agent fails to start and generates an ABEND file
IT28243 IBM MQ incorrectly writes channel completion messages to the channel initiation queue for SVRCONN channels
IT28259 IBM MQ 9.1 Appliance queue manager stops and restarts if errors file system is full
IT28279 AMQ7472W error message is missing information.
IT28289 After applying the IBM MQ or later Fix Pack, the IBM MQ Explorer MFT plug-in displays an "assertion failed" error message
IT28369 IBM MQ Appliance reports that the encrypted file space is full
IT28397 SET AUTHREC command fails with AMQ8871: Entity, principal or group not known
IT28404 Issuing <ctrl+c> during password entry for runmqsc leaves terminal without echo
IT28498 Inadequate information present in FDCs generated due to failure of mapping CCSID correctly.
IT28500 FDC with Probe ID RM680065 and AMQ9504E Error are reported when a Java or managed .NET client issues an object inquiry
IT28511 The setmqini command cannot modify the QMErrorLog qm.ini stanza on the IBM MQ Appliance
IT28555 IBM MQ client with client-side security exit fails to connect gets AMQ8077 authority errors
IT28593 CVE-2019-1559
IT28605 CICS/TXSeries IBM MQ application writes FDC probe ZC004062 and abends when stopping with -f or -c option
IT28608 JMSAdmin Tool does not recognize the TEMPTOPICPREFIX forConnectionFactory objects.
IT28621 IBM MQ reports AMQ9620E error 5 in function gsk_secure_soc_read
IT28666 IBM MQ Client with client-side security exit reports invalid CLNTUSER value in AMQ9777 error
IT28682 rdqmstatus truncates floating IP to 14 characters
IT28692 CVE-2019-4621
IT28699 CVE-2019-4049
IT28706 IBM MQ uses excessive memory for isolated bindings connections
IT28709 CVE-2019-6110
IT28745 CVE-2018-1084
IT28748 dmpmqcfg fails to connect in client mode when using non-multiplexed connection
IT28775 The IBM MQ 9.1 LTS redistributable client image does not include the IBM MQ SDK
IT28981 STOP CHANNEL MODE(TERMINATE) leaves channel hung and might permanently display "STOPPING"
IT28994 Potential for message loss or duplication when resolving indoubt message batch sent from shared channel
IT28996 amqsdlq incorrectly converts messages CCSID when forwarding or re-queueing the message
IT28998 Update Bouncy Castle .jar files as embedded within the IBM MQ installation
IT29114 Memory leak in the IBM MQ Java client after a failed connection attempt using a custom SSLSocketFactory
IT29123 Queue manager process suffers deadlock when handling memory exception (SIGBUS)
IT29141 CVE-2019-4378
IT29184 CVE-2019-4227
IT29222 Null pointer memory exception reported on Windows when trace is on and thread is ending
IT29237 AMQ8075 Authorization failed error with CONNAUTH ADOPTCTX(YES)
IT29262 CVE-2019-4432
IT29284 Upgrade JRE level for IBM MQ v9.1 to for AIX, Linux, and Windows, and to for Solaris
IT29328 Upgrade the IBM MQ embedded WebSphere Liberty profile from to
IT29355 CVE-2019-4294
IT29371 Update level of LDAP client supplied with IBM MQ 9.1 LTS to
IT29372 Update level of Libedit supplied with IBM MQ 9.1 LTS to 0:60:0 (20190324-3.1)
IT29375 CVE-2019-4762
IT29401 AMQ5531E error message generated when the application connects successfully.
IT29441 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.65.1
IT29524 CVE-2019-4491
IT29525 IBM MQ Appliance - dltmqm hangs indefinitely on HA QMs
IT29540 IBM MQ Appliance unable to mount DR Partition on DR primary or secondary when using HA-DR
PH07886 Application receives MQRC 2035 when connecting to a z/OS queue manager that had CONNAUTH AUTHTYPE(IDPWOS)
SE70949 IBM MQ Manager on CCSID 37 Sender Channel converts X15 to CCSID 1253 X85 vs X0A
SE71043 IBM MQ 9.1 Web Commands might fail due to Language
SE71324 IBM MQ JSON Log format incorrect
SE71352 Update OpenSSL to 1.0.2r

Fix Pack IBM i, Windows, UNIX®

(Last modified: April 2019)

Security APAR HIPER APAR APAR Description
IJ10803 With XMS .NET if the MQMD is corrupted a rollback puts the message back in the original queue not to the backout queue.
IT22064 IBM MQ default put response (DEFPRESP) behaves unexpectedly when putting to cluster queues using MQPMO_RESPONSE_AS_Q_DEF
IT22990 CHLAUTH rule fails to be applied as expected however error AMQ9557 reports 'User ID' in different case
IT24015 MQCONN from application returns MQRC_ALREADY_CONNECTED when hConn is invalid
IT24154 IBM MQ client fails to connect with 2035 (MQRC_NOT_AUTHORIZED) when LongUserId is not set
IT24186 The IBM MQ 8.0 Command Server process fails with an access violation when attempting to inquire on channel status
IT24532 IBM MQ .NET reports inappropriate error code from MQDISC, if the connection is associated with an incomplete transaction
IT24586 CVE-2018-1974
IT24778 Message "AMQ7208: The queue manager failed to start cluster channel 'AMQ' " is erroneously written to error logs.
IT24898 IBM MQ reports warnings and errors when applying Fix Pack and on HP-UX
IT24915 SIGSEGV from the LDAP client code. Queue manager becomes unstable afterwards
IT24916 Authorization service fails. FDC with Probe ZF272010 and rc=MQRC_SERVICE_ERROR
IT25042 Add resolved queue name to AMQ8416 error message
IT25043 The command server process does not write an error in the queue manager error log when there is a MQRC_Q_FULL error
IT25277 MQXR: Unexpected DISCONNECT packet from MQTT client causes FDC XR070013 PROTOCOL_HEADER error
IT25290 Clean Session Record was not removed from the SYSTEM.MQTT.PERSISTENT.STATE queue during a client takeover
IT25310 IBM MQ bindings file setting ClientReconnectTimeout does not work for XMS as it does for JMS.
IT25334 When a queue manager is deleted using the dltmqm command this is not reported in the system error log
IT25416 Using the IBM MQ .NET redistributable package in conjunction with an XMS client causes a System.TypeLoadException
IT25426 AMQ9772 error MQRC_RESOURCE_PROBLEM MQRC 2102 when connecting application on Windows
IT25428 ConvEBCDICNewline option is not available for the IBM MQ client
IT25581 MQDataException containing reason code 3013 thrown when receiving messages containing MQCFGR parameters
IT25591 Connection to queue manager fails after upgrade to IBM MQ Error log reports user missing CTRL authority on qmgr (AMQ8077)
IT25596 The makedrprimary command hangs when attempting to resolve a partitioned state on the IBM MQ Appliance
IT25598 File permission values are incorrectly formatted within IBM MQ tracepoint
IT25883 Misleading message produced during backout processing
IT25910 Repeated message output to WebSphere Application Server SystemOut.log file: MQJCA4004: Message delivery to an MDB 'null' failed with exception
IT25922 MFT REST API transfer checksum method is incorrect
IT26007 CHLAUTH rule not working when address uses DNS hostname, user receives MQRC_NOT_AUTHORIZED (2035)
IT26113 AMQ7076W error generated for valid values of 'MaximumSize' and 'UpdatePercentage' in MessageBuffer stanza of mqclient.ini file
IT26218 Access Violation FDC reported with Probe ID XC130031 in functionxcsRequestThreadMutexSem.
IT26223 IBM MQ Appliance queue manager configured for disaster recovery (DR) shows an unknown status and dltdr commands fail
IT26256 The mqconfig utility displays incorrect information about non-global zone projects in global zone
IT26266 IBM MQ Appliance 9.1: HA queue manager does not start at preferred location.
IT26293 Wildcard schema (WSCHEMA) value incorrectly altered when replacing SYSTEM.DEFAULT.SUB
IT26330 FDC error with ProbeID XY314146 and component xcsTimedLookupAccountSid is generated due to Windows error 1788.
IT26354 IBM MQ 9.1 mqconfig fails to detect that AIX 7.1 TL 5 is supported
IT26367 IBM MQ process crashes when setting or displaying AMS policy data. FDC with probe ID XC130031 generated
IT26372 Managed File Transfer agent event logs do not rotate
IT26379 JMS subscribers using IBM MQ messaging provider migration mode and MSGSELECTION=BROKER do not receive any messages
IT26390 File InputStreams acquired by the IBM MQ resource adapter are never closed
IT26428 FDCs with probe IDs XC332010 and KN107001 when MQGET wait interval exceeds 1000000000 ms
IT26438 runmqras doesn't pick up JVM dumps generated by the IBM MQ Appliance Web Console
IT26482 IBM MQ Classes for JMS incorrectly require "get" authority on the target cluster queue for an alias queue
IT26496 IBM MQ Explorer does not show all of the TLS/SSL cipher specs for IBM MQ Appliance channels
IT26531 FDC reporting xecF_E_UNEXPECTED_SYSTEM_RC, probe ID XC130031 in xihCheckThreadList when multiple threads end concurrently
IT26555 CVE-2018-1836
IT26557 When ChlAuthEarlyAdopt is enabled the MQCSP supplied by the application is authenticated prior
IT26571 WebSphere Application Server 9.0 IBM MQ Activation Specification shuts down following a JMSCC0108 message in the SystemOut.log
IT26585 Failures due to missing authority records. FDCs with IDs KN034025 kpiSPIAdoptUser or ZF044022 zfu_as_CalculateAuthority
IT26625 Deleted HA group reappears after performing boot switch operation
IT26650 FDC with probe ID XC130031 and access violation reported when putting to queue manager's DEFXMITQ with activity trace enabled
IT26690 Running "show qm-status" on secondary appliance times out and does not display any results
IT26707 amqsevt sample uses high CPU when running as an IBM MQ Service
IT26729 IBM MQ Explorer is missing arguments when displaying fteCreateTransfer command in transfer template wizard
IT26779 IBM MQ Explorer 9.1 welcome pages reference earlier versions of the IBM MQ product documentation.
IT26789 IBM MQ Classes for Java memory leak when communicating to the queue manager over an unreliable TCP/IP network
IT26790 .NET client incorrectly reports MQRC_Q_MGR_NOT_AVAILABLE (2059) if an SSL/TLS error is encountered when connecting to a qmgr
IT26794 Blank IBM MQ AUTHLIST( ) is displayed when authorities are added as a group and are individually removed.
IT26873 HA/DR Commands fail on the IBM MQ Appliance, incorrectly reporting AMQ8249E - another HA or DR operation is in progress.
IT26908 HA/DR commands can fail if local address is a substring of the remote address
IT26920 CVE-2018-1925
IT26922 The -expiry flag to the listcert command on the IBM MQ Appliance is only honored if no expiry time is supplied
IT26930 FDC file shows incorrect time zone information.
IT26940 An HA queue manager on the IBM MQ Appliance does not start during failover and no error messages are written.
IT26960 IBM MQ error message AMQ9512 contains incorrect text
IT26964 Weighted client channels with affinity preferred are not demoted after failing to connect
IT26970 Issues with IBM MQ Explorer and IBM MQ Classes for Java when consuming an invalid message
IT26976 CVE-2019-4055
IT26983 Upgrade Qpid Proton level for IBM MQ to Qpid Proton 0.30
IT26985 XA switch files built in on the AIX platform using Sybase 15 ESD#15 and later (including Sybase 16) fail with a SIGILL.
IT27005 Indirect runmqsc to a remote z/OS queue manager gives reason code 10 on exit
IT27026 Update level of LDAP client supplied with IBM MQ 9.1 LTS to
IT27028 IBM MQ Appliance command 'test tcp-connection' syntax is not as documented in IBM Documentation.
IT27054 IBM MQ client channel terminates writing FFDC with probe ID CO386011when using TLS
IT27057 IBM MQ Appliance: Configuration scripts cannot invoke mqcli commands using exec
IT27068 The mqwebui:// file system mount references an incorrect location
IT27072 Memory leak in IBM MQ on Linux after a queue is emptied
IT27102 Abnormal termination of amqrmppa process due to a memory overwrite issue
IT27120 MFT Agent generates an FFDC from MonitorWork indicating that a NullPointerException occurred.
IT27193 Unable to select some system languages with IBM MQ fix pack installer on Windows
IT27232 When using a connection name list there is a memory leak in the channel code
IT27240 Extremely short-lived TCP connections incorrectly generate AMQ9213E errors in the queue manager error log
IT27293 CVE-2018-1998
IT27296 The runmqras utility fails to obtain amqldmpa output files on the IBM MQ Appliance
IT27381 IBM MQ Appliance reloads if DNS reverse lookup fails to complete, causing HA queue managers to enter partitioned state
IT27396 FDCs with probe ID XR03122014 and XR063017 are thrown when starting the queue manager using locale "JA_JP.EUCJP"
IT27404 When updating an MFT transfer template using the IBM MQ Explorer, both "Until" and "Forever" scheduled options are checked
IT27453 dltmqras fails with FDC reporting probe ID XC130003 SIGSEGV under xcsQueryValue
IT27633 Installation of IBM MQ Fix Pack on Windows fails with unexpected RC 2 from strmqweb.
IT27634 Queue manager hangs following a SIGSEGV while contacting the LDAP server
IT27637 IBM MQ Java/JMS application supplying password to connect to queue manager reports AMQ6047: Conversion not supported
IT27638 An IBM MQ JMS application deadlocks after IT23101 when multiple threads compare JMS destinations
IT27694 Server-connection channel 'stopped' status is ignored after queue manager restart allowing clients to connect
IT27730 Behavioral differences between the IBM MQ MFT REST API on Distributed Platforms and z/OS
IT27733 An IBM MQ JMS client application may fail to connect to a queue manager. An FFDC with probe ID RM756099 is generated.
IT27750 IBM MQ Explorer shows 2MB as the default queue manager error log size.
IT27762 The "Help" button in the IBM MQ 9.1 Web Console links to the IBM MQ 9.0 welcome page in the product documentation.
IT27810 Window for message loss or duplication if sender channel disconnects and reconnects during commit processing
IT27837 HA configuration commands block for several minutes if heartbeatlink unavailable.
IT27959 CVE-2019-4039
IT27961 Files left in /usr/mqm/swidtag after uninstallation of IBM MQ in AIX
IT27989 Upgrade the IBM MQ embedded WebSphere Liberty profile from to
IT27990 Update level of libedit supplied with IBM MQ 9.1 LTS to 0:59:0 (20181209-3.1)
IT28004 Upgrade JRE level for IBM MQ 9.1 LTS and for AIX Linux and Windows and for Solaris
IT28030 Apache Ant as used by IBM MFT, updating from version 1.9.11 to 1.9.13
IT28031 Upgrade the CometD and Jetty libraries used by IBM MQ 9.1 for the IBM MQ Bridge to Salesforce/Blockchain
IT28057 The MQSeriesGSKit Fix Pack package for Linux incorrectly contains a dependency on the MQSeriesJRE package
IT28135 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.64.0
IT28154 isalist error reported when installing IBM MQ on Solaris Sparc 11.4
IT28156 Properties on JMS destinations created programmatically from a URI are not set when trace is enabled.
IT28160 Update the DRBD kernel module supplied with IBM MQ 9.1 LTS to 9.0.14_3.10.0_957-1
IT28271 CVE-2019-4078
IT28293 Upgrade JRE level for IBM MQ 9.0 and 9.1 to for AIX, Linux, Windows, Solaris (x86-64) and Solaris (Sparc)
IT28639 Multi-threaded IBM MQ client application on Windows hangs in MQCONNX
PH02080 MFT commands run on z/OS fail with BFGCL0002E error containing reason code 2298 after upgrading to V9.0.3 or V9.1
PH04826 BFGCUSTM fails with a BFGCL0722E error
PH06012 Agent or logger report a BFGUB0078W warning message indicating that CLEAN_AGENT_PROPS is not a valid property.
SE70271 IBM MQ client-only install creates FDC data during logging of regular error.
SE70292 IBM MQ 9.1 on IBM i QMERRORLOG service severities does not appear to work.
SE70356 IBM MQ 8.0 on IBM i: RFRMQM's authority should be *PUBLIC *EXCLUDE

Fix Pack IBM i, Windows, UNIX®

(Last modified: November 2018)

Security APAR HIPER APAR APAR Description
IJ04757 Dspmqver for XMS and WCF always displays the primary installation version
IT20481 MultiInstance queue manager failover might cause .Net client to send duplicate message
IT21586 IBM MQ: AMQ8009 authorization errors are still generated for topics after setting MQS_REPORT_NOAUTH to FALSE
IT22165 IBM MQ .NET client delay in obtaining SID for specified user on large network
IT24049 The dmpmqcfg command generates incorrect subscription definitions when using the 1line or 2line parameter
IT24055 AMQ5532 is reported during LDAP authorization if the DN of the LDAP user has an escape character in it.
IT24165 When an AMQP client unsubscribes to pre-existing queue object an FDC with Probe ID XR18012013 is generated
IT24281 Upgrading the IBM MQ Appliance to version 9 firmware removes the previous WebUI dashboard configuration.
IT24328 Runmqras '-section cluster' does not collect the full set of cluster MustGather data on the IBM MQ Appliance
IT24336 The status MQCLI control command shows negative memory usage
IT24367 The RUNMQSC process is looping intermittently, if the new feature "RUNMQSC command-line editor for UNIX" is used.
IT24391 AMQ8077 incorrectly generated when messages are put to cluster queue.
IT24426 " Too many open files" errors from IBM MQ 7.5 queue manager when using IBM MQ Telemetry
IT24429 IBM MQ Classes for JMS write trace to a file called 'mqjava_%PID%.trc' instead of 'mqjms_%PID%.trc
IT24453 FFDCs generated intermittently when IBM MQ Classes for JMS applications get messages from an alias queue
IT24503 When using cryptographic hardware, SSL/TLS channel reports AM9642 with GSKit error 407
IT24507 AMS-enabled application receives 2063 (MQRC_SECURITY_ERROR) from MQOPEN after disabling OCSP or CRL checking
IT24653 The haregtyp /r command for registering IBM MQ MSCS resources reports success when an older, invalid registration is found.
IT24719 Enhancements to runmqras utility
IT24751 JMS messages delivered to a configured backout queue instead of an MDB can have a missing group ID value
IT24757 Reloading messages from a file to a queue may fail when messages were saved with dmpmqmsg command using '-dt' parameter
IT24878 If a shared memory set is unavailable then the queue manager can enter an infinite loop
IT24912 IBM MQ Appliance 9.0.5: VLAN cannot be created on link aggregation interface
IT25113 IBM MQ MFT agent abend with NullPointerException probe ABEND_001
IT25145 Application fails with rc 2009, queue manager generates FDCs with ProbeIDs ZL043050 and XC130031.
IT25165 IBM MQ Appliance: SIGSEGV reported via FDC with ProbeID XC130003 when in dpcCmd_runmqras
IT25172 runmqsc fails with error AMQ8135 on screen and AMQ5531 in error logs
IT25269 Improve user action description for JMS authentication error messages JMSWMQ2013 and JMSWMQ2021
IT25353 IBM MQ Appliance configured for High Availability sees HA Ethernet Interfaces drop and enters a partitioned state
IT25409 runmqras not capturing WebUI logs
IT25490 CVE-2018-1684
IT25496 IBM MQ Classes for JMS reports an unhelpful Java Exception when failing to interpret a received message
IT25529 IBM MQ resource adapter deployed in WebSphere Liberty profile receives a certificate chain error when creating a TLS connection
IT25614 AMQ8227 Channel not found error when issuing command to stop auto-defined CLUSSDR channel
IT25615 IBM MQ Explorer MFT plug-in labels the XML payload of the completed transfer log publication as "# IN PROGRESS"
IT25652 crtmqm fails with memory exception in RDQM configuration
IT25683 Enhancements to runmqras utility
IT25741 IBM MQ cluster full repository unable to complete "REFRESH CLUSTER" command, reporting AMQ9511 error
IT25786 IBM MQ Appliance status commands reports status unknown for all queue managers if 6 or more HA/DR queue managers are configured
IT25839 Connections fail when CHLAUTH mapping rules and a security exit are defined on a channel and SHARECNV is greater than 1
IT25917 An IBM MQ Java/JMS application fails to connect to a queue manager with the error: "AMQ6047: Conversion not supported"
IT25942 When using isolated bindings xa_open fails with XAER_RMERR (0xFFFFFFFD / -3)
IT25944 The IBM MQ reporting service fails to register with an ICP metering endpoint
IT25999 New function to allow SVRCONN channel to request client disables AMS interception if MCA interception is in use
IT26088 Update Bouncy Castle shipped by IBM MQ
IT26121 IBM MQ Appliance - DNS error when using round robin DNS algorithm
IT26123 Update level of GSKit shipped with IBM MQ 9.1 LTS to
Update level of libedit supplied with IBM MQ 9.1 LTS to 0:58:0 (20180525-3.1)
IT26126 Update level of libcurl supplied with IBM MQ 9.1 LTS to 7.61.0
IT26162 Update JRE shipped within IBM MQ 9.1.0 to Java (SR5 FP22) and Java (SR5 FP20)
IT26171 Upgrade the IBM MQ embedded WebSphere Liberty profile from to
IT26185 Upgrade Jetty shipped with IBM MQ 9.1 for Linux (x86-64)
IT26234 CVE-2018-1792
IT26471 IBM MQ queue managers registered with the ICP Metering Service show an incorrect number of cores when viewed as a group
IT26499 Corrupted characters displayed when running IBM MQ commands on Windows in non-English languages
IT26510 CVE-2018-1883
IT26557 When ChlAuthEarlyAdopt is enabled, the MQCSP supplied by the application is authenticated before calling a security exit.
IT26577 MFT logger fails to convert publications on z/OS when updated JRE to 1.8
IT26587 IBM MQ Classes for JMS application deadlocks when JMS trace enabled

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Document Information

Modified date:
23 June 2021