APAR status
Closed as program error.
Error description
Customer noticed that *MASTER* was suddenly using an extensive amount of CPU. Analysis of a stand alone dump revealed that the CPUs were tight looping in the Liberty Angel module BBGZAFSM. The loop was identified on one instruction 05EF with R15 pointing back to the start of the same instruction.
Local fix
Ensure all client address spaces that were connected to the Angel are stopped before the Angel is restarted again.
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server Liberty for z/OS * **************************************************************** * PROBLEM DESCRIPTION: Liberty on z/OS is not deleting Client * * address space level RESMGRs * **************************************************************** * RECOMMENDATION: * **************************************************************** Code is missing during the client side cleanup of structures related to using OLA. The missing code is to delete an established address space level RESMGR. If the usage pattern of OLA for the client is in a long lived address space, such as a batch initiator or a CICS region, these RESMGRs can build up over time. There is a small amount of Common storage related to each established RESMGR. It has been observed in a customer scenario where over 100 outstanding RESMGRs were present when the address space went though EOM termination.
Problem conclusion
Code has been added during the client side cleanup of data structures to delete the established address space level RESMGR. The fix for this APAR is currently targeted for inclusion in fix pack 20.0.0.5. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PH24366
Reported component name
LIBERTY PROF -
Reported component ID
5655W6514
Reported release
CD0
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-04-13
Closed date
2020-04-20
Last modified date
2021-02-26
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
LIBERTY PROF -
Fixed component ID
5655W6514
Applicable component levels
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Platform":[{"code":"PF054","label":"z\/OS"}],"Version":"CD0"}]
Document Information
Modified date:
27 February 2021