APAR status
Closed as program error.
Error description
An MQ client reports reason code 2119 (MQRC_NOT_CONVERTED) when trying to MQGET a message. There is no error logged in the queue manager log and no FDC created. The issue can be observed within an MQ trace captured on the queue manager where the queue containing the message exists. In the amqrmppa process trace file the follwing entry will be observed:- rriConvertMsgHdrs rc=MQRC_HEADER_ERROR
Local fix
Modifying SHARECNV to zero for the channel works around the issue.
Problem summary
**************************************************************** USERS AFFECTED: Users of IBM MQ with large headers as part of the message payload may be affected by this issue. For example, a large RFH2 message may trigger the issue. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: The problem was caused by an MQRC_HEADER_ERROR in the server. When parsing the message headers the queue manager encountered an RFH header which has a structure length which was larger than the amount of data that can be returned to the client in one transmission. A sanity check on these lengths fails and causes MQRC_HEADER_ERROR to be returned and this is passed back to the client. If no conversion was expected then it was possible for the message data to reach the application as expected and so the only symptom of the problem is the bad return code.
Problem conclusion
The MQ queue manager code has been corrected to successfully handle the larger structure length, provided that the header to be converted is present in the current transmission segment. The queue manager will not attempt to convert headers that span multiple transmission segments. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v7.0 7.0.1.15 v7.1 7.1.0.8 v7.5 7.5.0.8 v8.0 8.0.0.6 v9.0 CD 9.0.1 v9.0 LTS 9.0.0.1 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IV83734
Reported component name
WMQ AIX V7
Reported component ID
5724H7221
Reported release
701
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-04-14
Closed date
2016-07-28
Last modified date
2017-06-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ AIX V7
Fixed component ID
5724H7221
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0.1"}]
Document Information
Modified date:
27 February 2021