A fix is available
APAR status
Closed as program error.
Error description
The TI timer task has been started for interval statistics and your CICS region receives the following messages and a dump for DFHSM0002 (CODE X'0A08'). . DFHMN0101 SMF error - SMF return code X'24'. DFHST0103 An SMF error has occurred with return code X'24'. DFHSM0002 A severe error (code X'0A08') has occurred in module DFHSMST. . The CICS Internal trace shows trace exceptions : TI QR ST 0059 STST *EXC* SMF_ERROR TI QR SM 0A08 SMST *EXC* Unexpected_return_code_from_UNLOCK_request COLLECT_STATISTICS,C64CF1B5400B6737,YES,YES,NO . Additional Symptom(s) Search Keyword(s): 5655s9700 600 V410 KIXREVJXD
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users. * **************************************************************** * PROBLEM DESCRIPTION: During DFHSMST COLLECT_STATISTICS, CICS * * encounters DFHSM0002 A severe error * * (code X'0A08') has occurred in module * * DFHSMST. * **************************************************************** * RECOMMENDATION: * **************************************************************** CICS enters the DFHSMST COLLECT_STATISTICS routine, and acquires the SMLOCK. During this routine, an SMF error occurs during write_buffer_to_smf processing. This error causes message DFHST0103 (An SMF error has occurred with return code X'xx') to be issued, and a dump taken. Taking a dump requires the SMLOCK to be acquired, but this task already holds the SMLOCK. The lock manager call returns an LMLM_EXCEPTION of LMLM_DUPLICATE_OWNER, but this is not tested for. SMGF assumes that it just acquired the SMLOCK, and when it finishes it frees the lock. Control passes back to DFHSMST. Eventually, this module also issues an unlock for the SMLOCK, when it finds it is no longer the owner. This leads to CICS issuing message DFHSM0002 A severe error (code X'0A08') has occurred in module DFHSMST. accompanied by exception trace point SM 0A08 SMST *EXC* - Unexpected_return_code_from_UNLOCK_request Additional Keywords: msgDFHSM0002 SM002
Problem conclusion
DFHSMGF has been amended to test the LMLM response codes. The smlock_held bit will now only be turned on if the response LMLM_OK was returned. The lock will only be freed on exit if this bit is on. New trace points have been added to provide additional documentation. The CICS Transaction Server for z/OS Version 4 Release 1 Trace Entries manual (SC34-7013-01) will be updated in Chapter 43 Storage manager domain trace points, in table 184 'Storage manager domain trace points' with three new entries: PointID | Module | Lvl | Type | Data SM 0321 | DFHSMGF | Exc | Lock error | 1 SMGF parameter list | | | | 2 SCA name | | | | 3 LMLM parameter list SM 0322 | DFHSMGF | Exc | Unlock error | 1 SMGF parameter list | | | | 2 SCA name | | | | 3 LMLM parameter list SM 0323 | DFHSMGF | Exc | Duplicate | 1 SMGF parameter list | | | owner | 2 SCA name | | | | 3 LMLM parameter list
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
**** PE10/11/03 FIX IN ERROR. SEE APAR PM25342 FOR DESCRIPTION
APAR Information
APAR number
PM19135
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
2010-07-23
Closed date
2010-09-30
Last modified date
2011-07-28
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK60983 PM44490
Modules/Macros
DESSMCDU DESSMDC DESSMGF DFHSMDCC DFHSMDCD DFHSMGF DFHSMGFA DFHSMGFM DFHSMGFT DFHSMTRI
SC34701301 |
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R600 PSY UK60983
UP10/10/06 P F010
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:
28 July 2011