A fix is available
APAR status
Closed as program error.
Error description
The following failures occurred when MQ is quiesced at the same time as the CICS region: . DFHAP0707 applid An abend (code 0C2/AKEA) has occurred in task related user exit program DFHMQTRU. DFHAP0001 applid An abend (code 0C2/AKEA) has occurred at offset X'00005D34' in module DFHMQTRU. . The abend0C2 occurs in DFHMQPRH offset x'16C' on a PC (Program Call) instruction as DFHMQPRH is attempting to call CSQAPRH0 (the subsystem program request handler). Immediately prior to the PC instruction, DFHMQPRH had loaded Reg15 from FRBRHPC (FRB +x'18' or MQLOC.HSUBSYS). FRBRHPC is zeroes, so the PC instruction (B218 F000) takes the 0C2. The failing task is the CKAM task. . Following the request to stop MQ, the CKAM task shuts down the Adapter, then waits 10 seconds at which point it would try to reconnect to MQ. During that 10 second window, CICS shutdown also starts shutting down the Adapter, and during it's processing, clears field MQLOC.HSUBSYS (also known as FRBRHPC). . When CKAM wakes up again, it will retry the connection which will fail as CICS is now in shutdown processing. The CKAM task then ends but takes the abend0C2 when the TRUEs are called for end_task processing because FRBRHPC has now been zeroed. . Additional Symptom(s) Search Keyword(s): KIXREVWJB
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All * **************************************************************** * PROBLEM DESCRIPTION: CICS issues S0C2 abend in module * * DFHMQTRU. * **************************************************************** * RECOMMENDATION: * **************************************************************** After WMQ queue manager shutdown, CICS shuts the MQ Adapter in the CICS address space. Task CKAM is also scheduled to attempt to restart the MQ adapter in 10 seconds time. However, the CICS address space itself starts to shutdown before the 10 seconds has elapsed. Then, when CKAM attempts to restart the MQ Adapter it abends S0C2 due to the field dfhmqloc.Connection.hSubSys having been reset to zeroes by CICS shutdown. Keywords: abends0c2 abend0c2 0c2 msgDFHAP0707 DFHAP0707 AP0707 msgDFHAP0001 DFHAP0001 AP0001 AKEA
Problem conclusion
Module DFHMQDSC has been changed so that field dfhmqloc.Connection.hSubSys is not set to zero.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PK91985
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-07-22
Closed date
2009-08-10
Last modified date
2009-09-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK49177
Modules/Macros
DFHMQDSC
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R600 PSY UK49177
UP09/08/15 P F908
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
02 September 2009