A fix is available
APAR status
Closed as program error.
Error description
MQ was throwing the error due to the AMS address space using up all the memory in the subpool. Data from the Heappool trace showed a storage leak when MQPUT1 put to a queue protected with a PRIVACY policy. . Additional keywords: Subpool 2 Key 7 SP2 KEY7 private storage
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0 and Release 2 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Storage leak in the xxxxAMSM address * * space, leading to symptoms that can * * include: * * - MQI calls failing MQRC_SECURITY_ERROR * * 2063 * * - CSQ0215E reporting Message Protection * * failed * * - increased CPU usage * * - Abend S878 * * - Performance degradation * **************************************************************** When protecting messages put using MQPUT1 to queues protected by a Privacy policy, an error can result in an area of storage being allocated during the message protection processing, but not freed. Over time,the accumulation of leaked storage can result in a degradation in performance, and eventual storage exhaustion. This Short on Storage SOS condition leads to MQI calls failing and abends reporting the storage shortage being captured.
Problem conclusion
CSQ0DLCF is changed to correctly free the leaked storage when it is no longer required.
Temporary fix
Comments
×**** PE24/01/05 FIX IN ERROR. SEE APAR PH59034 FOR DESCRIPTION
APAR Information
APAR number
PH30059
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
105
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-09-30
Closed date
2021-03-17
Last modified date
2024-02-08
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI74477 UI74478
Modules/Macros
CSQ0DLCF
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"105","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]
Document Information
Modified date:
08 February 2024