Fixes are available
APAR status
Closed as program error.
Error description
An FDC with Probe ID XY513001 is produced in an MSCS environment immediately after the queue manager fails over to the other node. The FDC contains the following comment and stack: Comment1 :- WinNT error 5 from CreateFile. Comment2 :- Access is denied. MQM Function Stack CMQDAICmdServerService::UpdateStatus lpiSPIQueryQMStatus zutQueryQMFileLocks xcsQueryFileLock xcsFFST
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Any users of WebSphere MQ experiencing expected/unexpected failovers in an MSCS environment. Platforms affected: Windows **************************************************************** PROBLEM SUMMARY: A lock file has been added to WebSphere MQ to assist in determining the state of the queue manager, specifically for software HA purposes. The purpose of this lock file is primarily to determine whether the queue manager is active on another node. However, a timing condition existed whereby the lock file could become unavailable during an MSCS failover in a hardware HA setup as the disk hosting the lock file transited to the standby node. Under these circumstances, attempts to access the lock file will fail with ACCESS DENIED errors. This is a valid scenario and an FDC should not be produced under such circumstances.
Problem conclusion
WebSphere MQ was modified to suppress the production of an FDC under the outlined scenario. Instead, attempts to read the lock file which result in ACCESS DENIED errors are treated as if the lock file is currently locked, and therefore that the queue manager is on another node. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.2 -------- -------------------- Windows U200316 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
IC65157
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
2009-12-15
Closed date
2010-01-14
Last modified date
2010-01-14
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