A fix is available
APAR status
Closed as program error.
Error description
When customer is starting MQ after the the CICS region (or bounce WMQ while CICS is up) the CICS WMQ connection will not be re-established: DFHMQ0341 STOP requested by alter monitor CKAM DFHMQ0107 A request to end CKTI has been received. CKTI ended. DFHMQ0107 A request to end CKTI has been received. CKTI ended. DFHMQ0334 Adapter shutdown successful. DFHMQ0342 CONNECT received from alert monitor. DFHMQ0308 MQNAME ABC is stopped. Connect request deferred. DFHMQ0380 No active connection. STARTCKTI rejected. DFHMQ0380 No active connection. STARTCKTI rejected. This problem occurs when a queue-sharing group name with less than 4 characters is used (for example 'ABC'). When the queue-manager ABC1 is stopped CICS issues another identify request for ABC, passing the address of an ECB to be posted when a queue-manager in group ABC becomes avaiable. This ECB is chained off a GATE control block for the group, which has the group name stored as 'ABC'. However, when a queue-manager in group ABC does start, it is looking for a GATE control block for 'ABC§' (internally the queue sharing group name is passed to 4 characters with at-signs). This means that the ECB provided by CICS is not posted, and hence it does not automatically reconnect.
Local fix
Manual activation of the CICS MQ connection (e.g. using CEMT) does work: DFHMQ0307 Successful connection to queue manager ABC1 release 0710 group ABC Also when setting the MQCONN to RESYNCMEMBER(YES) does work. So in our production environment GROUPRESYNC does not work and must be backed out.
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: CICS does not reconnect to QSQ with * * MQCONN having Resyncmember set to * * Groupresync, and the QSG name less than * * 4 characters long. * **************************************************************** * RECOMMENDATION: * **************************************************************** In CICS a MQCONN has been defined for a QSG where the QSG name is less than 4 characters in length. and with Resyncmember set to Groupresync. A QMGR that it is connected to in the QSG is stopped and that was the only active QMGR in that QSG. When that QMGR, or any other QMGR in the QSG is started, CICS does not automatically reconnect to the QSG. It can be reconnected by doing a CEMT SET MQCONN CONNECTED. The problem occurs because the GATE control block that has the connection information holds the QSG name in an internal format where the name is right padded with at signs.
Problem conclusion
CSQ3IDGA has been altered to look for a GATE using a QSG name right padded with the at sign if the QSG name is less than four characters long. If it does not find any it will create a new GATE with a groupname including at signs. 100Y CSQARIB CSQ3IDGA
Temporary fix
Comments
APAR Information
APAR number
PI19230
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-06-04
Closed date
2014-08-21
Last modified date
2014-11-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
CSQARIB CSQ3IDGA
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI20766
UP14/10/07 P F410
Fix is available
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Document Information
Modified date:
04 November 2014