Running Concurrent Prefix Update

Concurrent Prefix Update is run as a standard z/OS® job. It consists of a single job step. To run Concurrent Prefix Update, you must supply an EXEC statement that invokes the program FABYMAIN, and DD statements that define inputs and outputs.

1. Specify the EXEC statement in the following form:

   //HPPR   EXEC   PGM=FABYMAIN,REGION=nnn
   //              PARM='IMSPLEX=ccccc,DBRCGRP=ddd'

   where nnn is the region size. The minimum region size requirement depends on the internal sort/merge requests and on the number of I/O buffers specified on the DFSURWF1, DFSURWF3, and DFSURIDX DD statements. The minimum requirement is approximately 4 MB. Performance improves as the region size is increased. The recommended value for the region size is 8 MB or higher.

   Optionally, you can specify the PARM= parameter. It can include the following parameters:

   IMSPLEX=ccccc

   Specifies the IMSplex name to be used for a RECON. This parameter is 1- to 5-characters.

   DBRCGRP=ddd

   Specifies the 1- to 3-character identifier (ID) assigned to a group of DBRC instances that access the same RECON data set in an IMSplex.

2. Provide DD statements.

   For a list of DD statements for Concurrent Prefix Update, see DD statements for Concurrent Prefix Update.

3. Provide control statements.

   For a list of control statements for Concurrent Prefix Update, see Control statements for Concurrent Prefix Update.

4. Specify the following FABYIN control statement:

   UPDATE=YES