A fix is available
APAR status
Closed as program error.
Error description
If an application links to DFHEMTA with an inquire tsqueue or tsqname and there are more the 32767 items an ATSD abend may occur. After that, additional Inq TSQ requests will return with the ATSD abend. A counter field in DFHEMT56 goes negative and overlays occur when the TSQ Inquire parameter list is consecutively placed in storage that already contains valid TSQ data. In this case the TSQ Quick Cell Page Headers ( QPHs) were overlaid. The overlay will statr on a byte boundary and look similar to this : 80128000 68BFF000 00004000 i.e., part of the eib function for the inquire TSQ request.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All * **************************************************************** * PROBLEM DESCRIPTION: Storage violation when linking to * * DFHEMTA to inquire on TS queues. * **************************************************************** * RECOMMENDATION: * **************************************************************** DFHEMTA is linked to for an inquire of temporary storage queues. There are more than 32767 TS queues in the CICS system. REALLNUM is a signed halfword used when iterating through the objects being inquired upon within DFHEMT56. When this exceeds 32767, the count becomes invalid. This results in an overlay of the inquire TSQname parameter list onto storage that in this case contains TSQ quickcell page headers. CICS issues message DFHSM0102 A storage violation (code x'0F0C') has been detected by module DFHSMAR. Keywords: MSGDFHSM0102 SM0102 0102 programmable interface EMTA DFHEIN56
Problem conclusion
DFHEMT56 has been changed to cap the number of objects being inquired upon to 32766. This PTF restricts CEMT and its programmable interface to returning up to 32767 objects when inquire commands are issued. The CICS inquire and set SPI is the strategic mechanism for inquiring upon resources within CICS itself, and should be used in preference to the programmable interface into CEMT. Note that it is very atypical to have so many objects within a CICS system, and to then inquire upon them via CEMT or its programmable interface.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM19048
Reported component name
CICSTS V3 Z/OS
Reported component ID
5655M1500
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-07-22
Closed date
2010-09-24
Last modified date
2010-10-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM21950 PM21951 UK60750
Modules/Macros
DFHEIN56 DFHEMT56
Fix information
Fixed component name
CICSTS V3 Z/OS
Fixed component ID
5655M1500
Applicable component levels
R500 PSY UK60750
UP10/10/01 P F009
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:
01 October 2010