Output data sets (Target)

When running IBM® Transformation Extender maps to create output (target) data sets, the following recommendation for output data set JCL data definition (DD) modifications might improve the performance of batch jobs running under the Batch Command Server.

• Enable the system to determine the block size on all physical sequential (DSORG=PS) output data sets (non-temporary) created using the Batch Command Server.
  • If your system is not running SMS, modify the REVERSEO (output data set) data definition (DD) that is in the DTXBMJCL JCL example included with the Batch Command Server installation as follows:

    //* Define the output data set
    //REVERSEO DD DSN=&MAPOUT,
    //            DCB=(DSORG=PS,RECFM=VB,LRECL=80,BLKSIZE=0),
    //            UNIT=&UNIT,
    //            SPACE=(TRK,(1,1),RLSE),
    //            DISP=(NEW,CATLG,DELETE)

  • The DSORG=PS, RECFM=VB and BLKSIZE=0 DCB specifications on the REVERSEO DD will ensure that the system determines the block size for optimum performance.

    See DFSMS: Using Data Sets and DFSMS: Implementing System-Managed Storagefor additional information.