APAR status
Closed as program error.
Error description
The 'runmqdlq' (run dead-letter queue handler) utility was connecting to the queue manager over an unsecured socket (not using TLS/SSL). An FDC was generated by 'runmqdlq', indicating that a failure had occurred while attempting to unload the GSKit libraries. The FDC contained the following pertinent information: Probe Id :- CO559000 Component :- ccigsk_unload
Local fix
Either use TLS/SSL for the transport connection or set in the SSL stanza of the client configuration file (mqclient.init) the entry: EnvironmentScope=PROCESS
Problem summary
**************************************************************** USERS AFFECTED: IBM MQ 9.2.5 CD and 9.3 LTS users of the MQ C API who have defined in the SSL stanza of the client configuration file (mqclient.ini): EnvironmentScope=CONNECTION and are not connecting to the queue manager over a secured socket (TLS/SSL). Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: In MQ 9.3 LTS, a new attribute was added to the SSL stanza of the mqclient.ini file: EnvironmentScope which can take one of two values: PROCESS (the default value) CONNECTION If the attribute has the value 'CONNECTION' then a GSKit environment is created for each connection within the process, which allows a TLS keystore change to be immediately picked up when a new TLS connection is created. A consequence of using this 'CONNECTION'attribute value is the GSKit environment associated with a connection is unloaded off when the connection ends. The IBM MQ C API libraries did not take into account that the GSKit environment may not be loaded if the connection was not using TLS, and would generate an FDC when trying to close down the GSKit environment which had not been created in the first place.
Problem conclusion
The IBM MQ C API now verifies the GSKit libraries are loaded before attempting to unload them. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.3 LTS 9.3.0.20 v9.x CD 9.3.3 The latest available maintenance can be obtained from 'IBM MQ Recommended Fixes' https://www.ibm.com/support/pages/recommended-fixes-ibm-mq If the maintenance level is not yet available information on its planned availability can be found in 'IBM MQ Planned Maintenance Release Dates' https://www.ibm.com/support/pages/ibm-mq-planned-maintenance-rel ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT43791
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7271
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2023-05-19
Closed date
2023-11-10
Last modified date
2023-11-15
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
5724H7271
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
16 November 2023