For z/OS platforms

Liberty profile: Dumps on z/OS

On the z/OS® platform, you can modify the Liberty profile by using MVS™ operator commands. The MODIFY operator command can be used to request various dumps.

Transaction dumps

The following example shows the MODIFY command to request a transaction dump from the specified Liberty server:
MODIFY [jobname.]identifier,tdump

SVC dumps

To start an SVC dump, the server must be authorized with read access to the BBG.AUTHMOD.BBGZSAFM.ZOSDUMP resource profile in the SERVER class. The following example shows sample RACF® commands for authorizing the server, where <userid> is the user ID assigned to the server:
rdef server bbg.authmod.bbgzsafm.zosdump uacc(none)
permit bbg.authmod.bbgzsafm.zosdump class(server) access(read) id(<userid>)
setr raclist(server) generic(server) refr
The following example shows the MODIFY command to request an SVC dump from the specified Liberty server:
MODIFY [jobname.]identifier,svcdump
Fix Pack 8552

Java heap dumps

The following example shows the MODIFY command to request a Java™ virtual machine (JVM) heap dump from the specified Liberty server:
MODIFY [jobname.]identifier,HEAPDUMP
Fix Pack 8552

Java core dumps

The following example shows the MODIFY command to request a JVM core dump from the specified Liberty server:
MODIFY [jobname.]identifier,JAVACORE
Fix Pack 8552

Server dumps

The following example shows the MODIFY command to request a server dump from the specified Liberty server:
MODIFY [jobname.]identifier,DUMP[,INCLUDE=<JAVA_DUMP_1>,<JAVA_DUMP_2>,...]
The INCLUDE parameter is optional. If the INCLUDE parameter is specified, any Java dumps that are listed on the INCLUDE parameter are requested and included in the server dump package. The following Java dump types are valid:
  • THREAD for a Java core dump
  • HEAP for a Java heap dump

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Timestamp icon Last updated: Monday, 21 April 2014
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