Altering the definition of a DMB verification-enabled online
DEDB by using the DEDB Alter utility (DBFUDA00)
When you alter the definition of an online DEDB database
that has DMB verification turned on by using the DEDB Alter utility
(DBFUDA00) of IMS, you must stop
the DMB verification process and then restart the DMB verification
process after the DEDB is altered.
About this task
When you use the DEDB Alter utility (DBFUDA00) to alter
the definition of an online DEDB, you must temporarily stop the DMB
verification process. After the new definition is applied to the online
database, restart the DMB verification process with the new RDEs that
contain the new definition. Without these steps, the DMB verification
process uses the old definitions to verify the DMBs. Therefore, the
DMB verification process might deny database authorization requests
that use correct IMS control
blocks.
The following
figure shows the steps to alter the definition of an online DEDB that
has DMB verification turned on.
Figure 1. Steps to alter an online DEDB that has DMB verification turned
on
Procedure
Run the DBDGEN procedure with the new definition to update
the DBD member in the DBD library with the new database structure.
Run the ACBGEN utility to update the ACB member that is
in the staging ACBLIB.
Use the LICON utility of the Integrity Checker utility
to stop the DMB verification process. To do so, issue one of the following
LICON utility commands:
Changed definition
LICON utility command
Altering a DEDB area
CHANGE.DB DBD(dbname) AREA(areaname) CHECKON(N)
Replacing the randomizer
CHANGE.DB DBD(dbname) CHECKON(N)
Run the DEDB Alter utility to apply the changes to the
online DEDB.
The new DBD definition is applied to the
ACBLIB and is used to access the altered database.
For more
information about the DEDB Alter utility, see the topic "DEDB Alter utility (DBFUDA00)" in IMS Database
Utilities.
Use the LICON utility of the Integrity Checker utility
to re-create the RDEs to reflect the new definition and start the
DMB verification process. To do so, issue one of the following LICON
utility commands:
