Checklist for isolating the problem

Does the problem exist with an ISPF panel or with the VIT analysis tool?The ISPF panel process creates the parameter data set, which is the input to the VIT analysis tool.
Are any errors noted in the JCL output?IBM® publishes sample JCL, as described under Step 2. Set up to run the tool. However, you can change it to suit your environment. The JCL output indicates whether the tools entry module, ISTRAFT1, is found. The JCL output contains an error message if the SUMMARY data set cannot be written to (for example, if the wrong DCB information was specified for the SUMMARY data set). Also check the JCL to verify that the right trace tapes or DASD data sets are specified and that multiple tapes are specified in the correct order.
Check the SUMMARY data set to determine whether any errors were noticed, such as the wrong DCB information being supplied for the LOG data set. The SUMMARY data set shows the input parameters and defaults used. The SUMMARY data set reports time stamps and types of records and VIT entry occurrences found on the trace. The SUMMARY data set should always be created, unless there was a problem with the SUMMARY data set itself, in which case the JCL or REXX output shows what happened.
Check the input parameters in the parameter data set with the syntax diagrams. The parameter data set is created by either the ISPF panel process or by coding the parameters directly using an editor. For more information on checking syntax diagrams, see Using the VIT analysis tool.
Check the following output data sets:
- LOG
  The LOG data set shows whether counters overflowed, whether the trace wrapped, and so on. The LOG data set is always used unless an unrecoverable error prevents the tool from initializing completely. The LOG data set might contain only the title line and description (if a description exists).
- VITEXT
  The VITEXT data set is used only if the VIT extraction function is chosen. It is not used for storage analysis or RU-counting.
- DETAILS
  The DETAILS data set is used only if the storage analysis or RU-counting function is chosen. It is not used for VIT extraction.
- OUTSTAN
  The OUTSTAN data set is used only if storage-analysis-counting function is chosen and only if the outstanding option (to list unmatched allocate entries) is chosen. It is not used for RU counting or VIT extraction.