Database Prefix Update utility (DFSURGP0)

You use the Prefix Update utility to update the prefix of each segment whose prefix was affected by the initial loading or reorganization of the database.

The following figure shows the input to and output from the Database Prefix Update utility.

Figure 1. Database Prefix Update utility (DFSURGP0)
DFSURGP0 input: IMS.DBDLIB, DFSURWF3 work data set, and control statements. Output: updated segment prefixes and output messages.

The prefix fields that are updated include the logical parent, logical twin, and logical child pointer fields, and the counter fields for logical parents. The Prefix Update utility uses as input the DFSURWF3 data set created by the Prefix Resolution utility.

This utility is always run after the database is loaded (for initial load) or reloaded (for reorganization) and after the Prefix Resolution utility has been run.