APAR status
Closed as program error.
Error description
If the dmpmqmsg utility is called programmatically with no stdin stream and is attempting to write to a file which already exists, the utility hangs with high CPU usage, utilising resources until the disk becomes filled up.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users of IBM MQ running the runmqras utility with "-section cluster" or who are using dmpmqmsg utility programmatically. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: If the dmpmqmsg utility attempts to write to a file which already exists, it prompts the user to provide their confirmation that the existing file may be overwritten. If there was no stdin stream on which to obtain the user's input, then a coding error caused the dmpmqsg utility to enter an infinite loop. This loop caused high CPU usage to be overserved from the dmpmqmsg utility.
Problem conclusion
The dmpmqmsg logic for handling an output file that already exists has been fixed by ensuring that the failure to read from stdin will terminate the program with a "File already exists" error. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.10 v9.0 LTS 9.0.0.5 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
IT24818
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-04-23
Closed date
2018-06-20
Last modified date
2018-06-20
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
IBM MQ BASE MP
Fixed component ID
5724H7251
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
20 June 2018