Fixes are available
APAR status
Closed as program error.
Error description
/var/mqm/errors became filled up because of numerous FDC records with details like this. Probe Id :- HL062054 Component :- mqlCreateExtent Major Errorcode :- hrcE_MQLO_DISK MQM Function Stack zmuThreadMain zmuLogFormatTask mqlpgart mqlCreateExtent xcsFFST Other FDCs also seen on this occasion: HL049110/mqlpgart hrcE_MQLO_DISK HL077079/mqlReadFormatResponse hrcE_MQLO_DISK HL047028/mqlAddLogFile hrcE_MQLO_DISK The original cause of these problems was actually outside WebSphere MQ, in the disk subsystem. However, WebSphere MQ responded by writing more FDCs than was necessary, leading to secondary problems because of /var/mqm/errors filling up.
Local fix
Ensure adequate system space for linear logs and ensure disk management by clearing out old log files.
Problem summary
**************************************************************** USERS AFFECTED: Users who experience failures in their disk subsystem (this is very rare). Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: WebSphere MQ's response to the error condition was correctly to write FDC records to aid problem determination. However, this became a secondary problem because of the large quantity of information being written to /var/mqm/errors. It is still correct to write FDC records, but the quantity should be reduced.
Problem conclusion
A safety mechanism has been added to prevent this error being written too many times. An FDC record will only be written once per hour, at maximum. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.10 -------- -------------------- Windows 7.0.1.10 AIX 7.0.1.10 HP-UX (PA-RISC) 7.0.1.10 HP-UX (Itanium) 7.0.1.10 Solaris (SPARC) 7.0.1.10 Solaris (x86-64) 7.0.1.10 iSeries 7.0.1.10 Linux (x86) 7.0.1.10 Linux (x86-64) 7.0.1.10 Linux (zSeries) 7.0.1.10 Linux (Power) 7.0.1.10 v7.1 Platform Fix Pack 7.1.0.2 -------- -------------------- Windows 7.1.0.2 AIX 7.1.0.2 HP-UX (Itanium) 7.1.0.2 Solaris (SPARC) 7.1.0.2 Solaris (x86-64) 7.1.0.2 iSeries 7.1.0.2 Linux (x86) 7.1.0.2 Linux (x86-64) 7.1.0.2 Linux (zSeries) 7.1.0.2 Linux (Power) 7.1.0.2 Platform v7.5 -------- -------------------- Multiplatforms 7.5.0.1 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
IV15312
Reported component name
WMQ AIX V7
Reported component ID
5724H7221
Reported release
701
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-02-08
Closed date
2012-06-29
Last modified date
2012-06-29
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
R701 PSY
UP
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Document Information
Modified date:
31 March 2023