Fixes are available
APAR status
Closed as program error.
Error description
A client application attempted to connect to a queue manager. This succeeded but a subsequent MQOPEN call against the returned HCONN resulted in MQRC_CONNECTION_BROKEN. The client application was using a client channel definition table with multiple channel definitions to the queue manager, some of which contained security exit definitions. The client was iterating through each of the definitions in an attempt to connect. One of these connections was forcibly terminated on the server-side by a security exit. The following connection succeeded, only to fail on a subsequent MQOPEN.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Any users of WebSphere MQ using multiple channel definitions in a CCDT. Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: The problem was caused by a flag that had been set for a previous connection attempt during the client logic to iterate through the client channel definition table when connecting to the queue manager. As the result of a partial failed attempt (the client had established initial communications with the remote queue manager but the conversation was abruptly terminated by a server-side security exit), the CONNECTION_BROKEN flag was set on the conversation handle belonging to the HCONN. This then persisted for the subsequent connection attempt using the CCDT. Upon successful completion of this MQCONN attempt, the client then issued an MQOPEN. As part of this API call, MQ performed validation against the conversation and found that this conversation was marked as broken. As a result, it returned MQRC_CONNECTION_BROKEN.
Problem conclusion
The connection broken flag was switched off appropriately when iterating through channel definitions in the channel definition table. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.0.1 -------- -------------------- Windows U200301 AIX U821414 HP-UX (PA-RISC) U820765 HP-UX (Itanium) U821296 Solaris (SPARC) U820766 Solaris (x86-64) U820880 iSeries tbc_p700_0_0_1 Linux (x86) U821407 Linux (x86-64) U821295 Linux (zSeries) U821294 Linux (Power) U820881 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
IC58266
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-10-07
Closed date
2008-10-23
Last modified date
2009-03-10
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 WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R700 PSY
UP
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Document Information
Modified date:
31 March 2023