A fix is available
APAR status
Closed as new function.
Error description
After applying maintenanc to TWS z/OS 8.5.1, sporadically abends 0C4 and U3999 are seen. The abends appear to be related to be trigged by a failed attempt of setting an external successor of the occurrence being dynamically added. The S0C4-11 abend is seen first: IEA995I SYMPTOM DUMP OUTPUT 315 SYSTEM COMPLETION CODE=0C4 REASON CODE=00000011 TIME=13.06.50 SEQ=11947 CPU=0000 ASID=0151 PSW AT TIME OF ERROR 078D1000 A086675E ILC 2 INTC 11 ACTIVE LOAD MODULE ADDRESS=20850528 OFFSET=0001 NAME=EQQMCTOP DATA AT PSW 20866758 - D1685850 D1680E24 5870D124 GR 0: 00000003_001D6A78 1: 00000000_001D6A3C 2: 00000000_20C28FE7 3: 00000000_00000027 4: 00000000_20DD6008 5: 00000000_00000027 6: 00000000_00000004 7: 00000000_20C28FE7 8: 00000000_00000027 9: 00000000_20866D40 A: 00000000_20C28BC0 B: 00000000_A0865D40 C: 00000000_00000000 D: 00000000_001D6960 E: 00000000_A08663B2 F: 00000000_A08134D0 . This is followed some minutes later by abend U3999: IEA995I SYMPTOM DUMP OUTPUT USER COMPLETION CODE=3999 TIME=15.50.44 SEQ=34916 CPU=0000 ASID=0035 PSW AT TIME OF ERROR 078D1000 80095814 ILC 2 INTC 0D ACTIVE LOAD MODULE ADDRESS=000857F0 OFFSET=00010024 NAME=EQQBEX DATA AT PSW 0009580E - 00181610 0A0D1812 0A0D47F0 AR/GR 0: 00000000/80000000 1: 00000000/80000F9F 2: 010100D0/00000F9F 3: 00000000/0016D690 4: 00000000/C5D8D8C2 5: 00000000/C4C54040 6: 00000000/C5E7C9E3 7: 00000000/40404040 8: 00000000/00000F9F 9: 00000000/00000001 A: 00000000/001CB950 B: 00000000/80095600 C: 00000000/24A22BC0 D: 00000000/000DD068 E: 00000000/80085AAC F: 00000000/00000000 . Note R4/R5 contains EQQBDE . After the U3999 abend, the following message is seen in the controller EQQMLOG: EQQG004E SUBTASK GS EXECUTOR 01 ABENDED, IT IS RESTARTED AT CLEANUP .
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: ALL TWS for z/OS USERs * * * * FUNCTION=GS * **************************************************************** * PROBLEM DESCRIPTION: Randomic abends (U3999 or S0C4) may * * occur during occurrence dynamic add. * **************************************************************** * RECOMMENDATION: APPLY THE PTF FIXING THIS APAR * **************************************************************** Randomic abends (U3999 or S0C4) may occur during occurrence dynamic add.
Problem conclusion
Temporary fix
Comments
the abends are caused by a wrong calculation of MTDs of type 'add external successor' during dependency resolution processing. Moreover the fix has been extended to support big amounts of external successors at occurrence level during dynamic add. This change has been implemented by removing an old existing design limitation.
APAR Information
APAR number
PM30220
Reported component name
TIV WRKLD SCHD
Reported component ID
5697WSZ01
Reported release
510
Status
CLOSED UR1
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2011-01-11
Closed date
2011-01-17
Last modified date
2011-03-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK63977 UK63978 UK63979 UK63980
Modules/Macros
EQQMC0RD EQQMC1AS EQQMC1DR EQQMC1RS EQQMC3TS
Fix information
Fixed component name
TIV WRKLD SCHD
Fixed component ID
5697WSZ01
Applicable component levels
R202 PSY UK63977
UP11/02/12 P F102
R302 PSY UK63978
UP11/02/12 P F102
R502 PSY UK63979
UP11/02/12 P F102
R512 PSY UK63980
UP11/02/12 P F102
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":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSRULV","label":"IBM Workload Scheduler for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"510","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}},{"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":"510","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
02 March 2011