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Verify that the job name in the JCL is the same as the job name for which statistics were collected by the CTTSTK utility. (This may not be the case if data sets with the same name were created by two different jobs.)
Make sure that the CTTSTK utility is included as a step in the New Day procedure (CTTDAY). This utility reviews the Control-M/Tape Trace file and collects the statistics needed for operation of the Dynamic Data Set Stacking facility.
This information can also be obtained by running the CTTSTK utility, using the Control-M/Tape Trace file as input.
The CTTSTKR utility can also be used to list the contents of the Stacking Database. For more information on the CTTSTKR utility, see the Control-M/Tape chapter of the INCONTROL for z/OS Utilities Guide.
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