The PtrUpdate Function's Inputs and Outputs

Input

The input is the DBD name of a physical DBD which defines logical children segments. The IMSDBU Load function must have been performed for this DBD name and for any databases containing logical parents for the logical children. A database which defines logical children does not require PtrUpdate if no logical child segments were loaded to the database.

An error message is issued if you attempt to run PtrUpdate for:

• A DBD which does not define any logical children
• A DBD name which was not input to the IMSDBU Load function

A PtrUpdate can be run for exclusive use databases and shared update Fileshare databases. IMSDBU does not support PtrUpdate or Load for Remote IMS or User Exit databases. Shared read-only databases must be established as an exclusive use or shared update Fileshare database and copied to the shared directory.

Output

Updated database data files for the input DBD name and any database referenced by logical child occurrences in this database. Once PtrUpdate completes, the databases can be accessed from application programs using any of the supported physical and logical access paths.