A fix is available
APAR status
Closed as program error.
Error description
ABEND0C4 module ISTTSC86 +836 when partial blocks of data received over subarea MPC connection. ***** Additional Symptoms: You may also encounter the following INOP conditions after activating CP-CP across RTP pipe: IST1578I SOFT INOP DETECTED FOR QMS00ZL BY ISTTSCLC CODE = 201 IST259I INOP RECEIVED FOR CMSNNCZL CODE = 01 IST1222I READ DEVICE 084E IS INOPERATIVE, NAME IS QMS00ZL 955 IST1578I DEVICE INOP DETECTED FOR QMS00ZL BY ISTTSC8X CODE = 001 IST1578I SOFT INOP DETECTED FOR QMS00ZL BY ISTTSC8X CODE = 002 *****
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All running subarea MPC connections. * **************************************************************** * PROBLEM DESCRIPTION: ABEND0C4 ISTTSC86 when reassembling * * split PIU received across multiple * * READ channel programs. * **************************************************************** * RECOMMENDATION: * **************************************************************** The problem is summarized as follows: 1) A subarea MPC connection is active between two VTAMs. 2) A burst of data across the WRITE channel program caused the last PIU to be split between two channel programs. 3) When the second half of the PIU arrived on the READ side, an ABEND0C4 occurred in module ISTTSC86. The ABEND was due to PTRTSCB being set to a negative value. The subsequent settting of TSCILNG resulted in the ABEND0C4. 4) During aINOP processing a spin loop later occurred in module ISTTSC8X. The loop occurred processing the MPNSORTQHD. Note: This problem only occurs in HVT6190 and higher releases. The problem is due to incorrect code being generated by a newer compiler version.
Problem conclusion
ISTTSC86 - Code in subroutine RECHAIN has been restructured to cause the compiler to generate accurate code. Subroutine RECHAIN has also been changed to clear the MPNSORTQHD at the beginning in the event of an ABEND. This will avoid any loops in subsequent INOP processing. Module ISTTSC8E has been included for maintenance purposes.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
OA22074
Reported component name
VTAM V4 MVS/ESA
Reported component ID
569511701
Reported release
190
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2007-08-02
Closed date
2007-08-16
Last modified date
2010-04-06
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UA36413
Modules/Macros
ISTTSC8E ISTTSC86
Fix information
Fixed component name
VTAM V4 MVS/ESA
Fixed component ID
569511701
Applicable component levels
R190 PSY UA36413
UP07/09/18 P F709
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.
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"190","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSCY4DZ","label":"DO NOT USE"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"190","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
06 April 2010