A fix is available
APAR status
Closed as program error.
Error description
The customer is running WebSphere MQ for z/OS V710 and they receive the following: . TITLE: CSQ1,ABN=5C6-00E20001,U=SYSOPER ,C=R3600.710.SMC -CSQSGSTG,M=CSQGFRCV,LOC=CSQSLD1 .CSQSVBK +000014F2 . Looking at the code at CSQSVBK (base) at offset x'14F2' it is pointing to a problem with PHB (reg 4) x'5AABBD00'. The abend has occurred when processing the response to a DISPLAY CHSTATUS CMDSCOPE(*) command. The reply record for the CSQN121I message for CSQ1 does not have the expected length, hence the abend occurs. The Change Team has now identified the problem which has resulted in the 5C6-00E20001 abend seen here. The abend occurs when a command is put to SYSTEM.COMMAND.INPUT with CMSSCOPE(*). CSQNGRS2 assumes that the first response message from a queue-manager will start with CSQN205I and will contain a 'dummy' area of 200 characters for inserting message CSQN121I (this dummy area is setup by CSQNSRSP). However, the response messages are sent via XCF messaging, so the order in which they are received may be different to that in which they were sent, so the CSQN205I message not not be the first. If that is the case, then CSQNRGS2 tries to insert the CSQN121I message into the wrong area, which can result in various abends, such as the 5C6-00E20001 issued by CSQSVBK.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: CSQN212E and CSQN203I are issued * * reporting the command server was unable * * to put a reply with MQRC 2005 * * (MQRC_BUFFER_ERROR). * * * * This can be followed by various * * symptoms including: * * - the same error being issued * * repeatedly in a loop. * * - abend 0C4 in CSQNGRS2 * * - abend 5C6-00E20001 in CSQSVBK * * - the queue manager failing to provide * * responses to group commands issued * * by other queue managers in the qsg. * **************************************************************** * RECOMMENDATION: * **************************************************************** The queue manager issued a group command (CMDSCOPE(xxxx) or CMDSCOPE(*)) to one or more other queue manager in the queue sharing group. The command was executed on each of the targeted queue managers, and the responses passed back to the originating queue manger in one or more XCF messages. However, one of the queue managers provided responses in two XCF messages, but incorrectly indicated that the second message contained the CSQN205I response at the start. When CSQNGRS2 attempted to process the message, this caused it to locate the response messages contained within the XCF message incorrectly, leading to the reported errors occurring when attempting to put the responses to the reply queue. The incorrect indication that the second XCF message contained a CSQN205I message was set because the responses filled the initial XCF message, and the queue managers were in different CCSIDs. When converting the responses, the initial message was split across two XCF messages, and the CSQN205I indicator flag was incorrectly set in both.
Problem conclusion
CSQNCRSP is changed to only indicate the presence of the CSQN205I message in the first XCF message sent. 100Y CSQNCRSP
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI60582
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-04-11
Closed date
2016-09-07
Last modified date
2016-11-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
CSQNCRSP
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI40683
UP16/10/06 P F610 ¢
Fix is available
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Document Information
Modified date:
02 November 2016