Dump information for data tables

Information relevant to data tables is included in a CICS® system dump to help you determine the cause of a problem. For information on the contents of dumps and how to obtain them, see CICS Problem Determination Guide.

The major control blocks that are used by SDT are included in the FILE CONTROL area of a formatted dump of the file-owning region. These control blocks are named:

Data Table Global Area.
This is also known as the SDT Header Block, so it uses the eye-catcher DFHDTHEADER.
Data Table Base Area.
This is also known as the SDT Table Block, so it uses the eye-catcher DFHDTTABLE.
Data Table Path Area.
This is also known as the SDT File Block, so it uses the eye-catcher DFHDTFILE.
These control blocks are described in the DTLPS topic in the CICS Supplementary Data Areas manual.

The data table contents are not included in the CICS system dump because the data space in which the data table resides is not part of the CICS address space. If you want to see the contents of the data table, ask the system operator to use the MVS™ DUMP command to request a dump of the data space DFHDT001 owned by the appropriate CICS startup job.

The operator command DISPLAY J,CICS-startup-jobname shows information about a CICS job, including the DSPNAMEs of data spaces that it owns. To dump the contents of the data space, you can use the MVS DUMP command as follows:

  1. Enter
    DUMP COMM=(title for your dump)
  2. This generates an MVS console message
    * id IEE094D SPECIFY OPERAND(S) FOR DUMP COMMAND
  3. Reply to the message with
    REPLY id, DSPNAME='jobname'.DFHDT001
    and the data space is dumped.
  4. Use DISPLAY DUMP,TITLE to see which SYS1.DUMPnn data set has been used.

Related concepts
Using dumps in problem determinationProblem determination for data tables
Trace information for data table services
Analyzing errors from the data tables SVC
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