Summarization utility JCL

This sample JCL contains the following JCL statements:

• EXEC specifies the name of the program that generates the summarized detail data (PGM=CMRSUMDN).
• //STEPLIB defines the program library containing the MainView for CICS load modules.

• //CMRDETL defines the name of the input data set containing the detail records to be summarized. The detail records can be from a single CICS region or multiple CICS regions. For maximum performance, detail records should be sorted in date and time sequence.

  If necessary, you can use a sort utility to combine multiple detail files into date and time sequence; for example, you can specify

  • SORT FIELDS=(9,20,CH,A) for VSAM
  • SORT FIELDS=(13,20,CH,A) for sequential (to account for the RDW)

• //OUTPUT defines the name of the summary output data set. You must specify the BLKSIZE parameter when creating a new sequential output data set.

  For more information, see BBSAMP member CMRDFSUM for guidelines about allocating a VSAM or sequential data set.

  Note

  When you run multiple executions of the CMRSUMDN program against the same CICS region, workload, and time frame using a VSAM data set:

  • Workloads with the same name as existing records are combined with the records.
  • New workloads are inserted.
  • A maximum of 999 workloads are supported.

• //COPYDD, which is optional, defines the name of the selected sequential output data set. COPY={NO | YES} for more information.

  Note

  When creating a copy data set, specify RECFM=U, LRECL=0, and BLKSIZE=32768 bytes.

• //REPORT defines the SYSOUT data set containing the program statistics compiled by CMRSUMDN.
• //SYSIN contains the control statements you must use to specify the input records and summarization options. For more information, see Control-statement-descriptions.