A fix is available
APAR status
Closed as program error.
Error description
You are receiving the following message, DFHLD0001 An abend (code 0C4/AKEX) has occurred at offset X'FFFF' in module DFHLDLD1. . The LD0001 dump is caused by an 0C4 in z/OS code during a BLDL. You can see that the abending task owns the shared LD_LCLOK and there is no code to cause that lock to be unlocked. . Later, a console dump of that same CICS Region shows lots of tasks hung because there are 3 mysterious shared owners of the LD_LCLOK lock. . This looks just like PI59710 but with a different lock.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users * **************************************************************** * PROBLEM DESCRIPTION: A task which requires the exclusive * * PLIBE chain lock hangs after the abend * * of a prior task. * **************************************************************** A task which has obtained and owns the shared PLIBE chain lock from DFHLDLD1 abends, driving the DFHLDLD1 recovery routine. Since this routine fails to release the shared lock, the next task which requires the lock exclusively (which it cannot have until all shared locks have been relinquished) will not be able to obtain it and will hang indefinitely. Additional keywords: S0C4 0C4 abend0c4 MSGDFHLD0001 MSGLD0001
Problem conclusion
DFHLDLD1 has been changed so that the shared PLIBE chain lock is released, if appropriate, in its recovery routine.
Temporary fix
Comments
APAR Information
APAR number
PI88801
Reported component name
CICS TS Z/OS V5
Reported component ID
5655Y0400
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-10-12
Closed date
2018-01-24
Last modified date
2018-02-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI53404 UI53405 UI53406
Modules/Macros
DFHLDLD1
Fix information
Fixed component name
CICS TS Z/OS V5
Fixed component ID
5655Y0400
Applicable component levels
R000 PSY UI53406
UP18/02/01 P F801
R100 PSY UI53405
UP18/02/01 P F801
R900 PSY UI53404
UP18/02/01 P F801
Fix is available
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Document Information
Modified date:
01 February 2018