A fix is available
APAR status
Closed as program error.
Error description
A JVMServer in CICS doesn't work anymore after suffering a JVM dump. The CICS region must be recycled in order to resolve the situation. The CICS Joblog shows the following sequence of messages: --------------------------------------------------------- 08.50.55 BPXM023I JVMDUMP039I Processing dump event "abort", detail "" at 2017/03/21 08:50:55 - please wait. 09.25.58 +CEE3798I ATTEMPTING TO TAKE A DUMP FOR ABEND U4094 09.30.59 BPXP018I THREAD xxxxxx, IN PROCESS yyyyyy, ENDED WITHOUT BEING UNDUBBED WITH COMPLETION CODE 84000FFE 09.31.34 +DFHSJ0005 aaaaaaaa AN UNEXPECTED ABEND HAS OCCURRED ON THE INITIAL PTHREAD TCB FOR JVMSERVER: zzzzzz JVMERR shows the following failure : ------------------------------------- 017/03/21 08:51:30.044099 CET D ¬LE-Thread-0? ¬DFHSJSC:2661 @Event: ipt_control_loop() A Posix signal was received by the JVM server. SIGQUIT may be used to obtain a Java dump. Signals causing termination (SIGKILL, SIGTERM, SIGABRT etc) should NEVER be issued. CICS may become unstable and the JVM server will be terminated in an uncontrolled
Local fix
not available
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users * **************************************************************** * PROBLEM DESCRIPTION: CICS JVM server suffers hang and * * possible abend 0C2 in DFHKETCB. * **************************************************************** * RECOMMENDATION: . * **************************************************************** A CICS JVM server pthread terminates and uses storage which has previously been FREEMAINed. This can lead to hangs and an abend0C2 on an SPKA instruction in DFHKETCB.
Problem conclusion
DFHSJIN has been changed to set a pointer to nulls when the control block that it addresses is freed. DFHSJSA has been changed to check for a null pointer before accessing the control block.
Temporary fix
Comments
APAR Information
APAR number
PI79050
Reported component name
CICS TS Z/OS V5
Reported component ID
5655Y0400
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-03-30
Closed date
2017-04-28
Last modified date
2017-06-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI80769 UI46823
Modules/Macros
DFHSJIN DFHSJSA
Fix information
Fixed component name
CICS TS Z/OS V5
Fixed component ID
5655Y0400
Applicable component levels
R000 PSY UI46823
UP17/05/05 P F705
Fix is available
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[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3","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":"5.3","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
02 June 2017