APAR status
Closed as program error.
Error description
On the IBM MQ appliance, the mechanism by which the queue manager status is queried when REST URI /mgmt/status or show qm-status is used is by initiating multiple product command sequences internally to obtain the information. This can cause performance overheads. Additionally, if queue manager status is queried after an appliance restart, a transient HA state may result in a blank status being reported for an HA queue manager.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All IBM MQ Appliance users who query queue manager status using the REST API or show qm-status. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: When queue manager status is queried using REST or through the show qm-status it took longer than expected to fetch the output. The overheads of inefficiencies in this command were apparent in the overall system resource usage when a large number of HA queue managers were defined and their status queried. Also, when the HA queue managers are in a transient state following a system reboot the HA status was sometimes displayed as blank.
Problem conclusion
The design of the status checking logic has been modified to improve the performance and it ensures that the transient states are handled correctly and a valid HA status is displayed to the user. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 LTS 9.1.0.7 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
IT29783
Reported component name
IBM MQ APPL M20
Reported component ID
5725Z0900
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-07-19
Closed date
2020-10-14
Last modified date
2020-10-14
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
IBM MQ APPL M20
Fixed component ID
5725Z0900
Applicable component levels
[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910"}]
Document Information
Modified date:
15 October 2020