A fix is available
APAR status
Closed as program error.
Error description
DHTRAP program checks when inadvertently left in subspace mode.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All * **************************************************************** * PROBLEM DESCRIPTION: Global trap exit, DFHTRAP, issues * * message DFHTR1001 and abend 0C4. * **************************************************************** * RECOMMENDATION: * **************************************************************** When using a CICS system with transaction isolation and DFHTRAP is active, it is possible for the DSTCB or XM system tasks to issue trace calls and so drive DFHTRPT. If the previous task had been in a subspace, these tasks can inherit their subspace environment. DFHTRPT does an INQ_SUBSPACE_ENVIRONMENT call to determine if a switch to basespace is required before invoking DFHTRAP, but this incorrectly reports that the task is already in basespace. This means that DFHTRAP is called in the subspace of the original task. Depending upon the way the trap is written, potential references to storage in other subspaces can result in program checks or protection exceptions. KEYWORDS: s0c4 0c4 ABENDS0C4 ABEND0C4 transaction isolation TRANISO TRANSIO CSFE DEBUG msgDFHTR1001 DFHTR1003 msgDFHTR1003 TR1001 TR1003 SMX
Problem conclusion
DFHTRPT has been changed to always make the switch back to basespace if the task that is issuing the trace call is a system task, that is, it does not have an SMX.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PK65399
Reported component name
CICSTS V3 Z/OS
Reported component ID
5655M1500
Reported release
400
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-05-01
Closed date
2008-08-08
Last modified date
2008-09-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK38806 UK38807
Modules/Macros
DFHTRPT
Fix information
Fixed component name
CICSTS V3 Z/OS
Fixed component ID
5655M1500
Applicable component levels
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 2008