Steps for generating a system dump in a z/OS UNIX shell

Perform the following steps to generate a system dump from a z/OS UNIX shell:

• Using _BPXK_MDUMP
  1. Specify where to write the system dump
     • To write the system dump to a z/OS data set, issue the following command, where filename is a fully qualified data set name with DCB information: LRECL=4160, BLKSIZE=4160, and RECFM=FBS.

       export _BPXK_MDUMP=filename 

       Example

       export _BPXK_MDUMP=hlq.mydump

     • To write the system dump to an HFS file, issue the following command, where filename is a fully qualified HFS filename.

       export _BPXK_MDUMP=filename 

       Example

       export _BPXK_MDUMP=/tmp/mydump.dmp

  2. Specify Language Environment runtime options, where suboption is UAONLY, UADUMP, UATRACE, or UAIMM.

     export _CEE_RUNOPTS="termthdact(suboption)"

     If UAIMM is set, TRAP(ON,NOSPIE) must also be set. The TERMTHDACT suboption determines the level of detail of the Language Environment formatted dump. For more details about the TERMTHDACT suboptions, see Generating a Language Environment dump with TERMTHDACT.
  3. Rerun the program.

  When you are done, the system dump is written to the data set name or HFS file name specified. For additional _BPXK_MDUMP information see z/OS UNIX System Services Planning and z/OS UNIX System Services Programming: Assembler Callable Services Reference.

• Using DYNDUMP
  1. Specify Language Environment runtime options:

     export _CEE_RUNOPTS="termthdact(suboption),DYNDUMP(hlq,DYNAMIC,TDUMP)"

     suboption

     is UAONLY, UADUMP, UATRACE, or UAIMM. If UAIMM is set, TRAP(ON,NOSPIE) must also be set. The TERMTHDACT suboption determines the level of detail of the Language Environment formatted dump. For more details about the TERMTHDACT suboptions, see Generating a Language Environment dump with TERMTHDACT.

     hlq

     the high level qualifier for the dump data set to be created.

  2. Rerun the program.

  When you are done, the system dump is written to the name generated by the DYNDUMP runtime option. For additional DYNDUMP information see z/OS Language Environment Programming Reference.