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Before activating Control-M/Tape in Global Phased mode, the Media Database should already be synchronized with the database of the other tape management system. However, while in Global Phased mode, it is important to continue to monitor the Media Database to check that the information it contains is still consistent with the database of the tape management system being replaced by Control-M/Tape.
Media Database synchronization can be accomplished in a number of different ways.
Reports generated from the tape management system databases are compared (for example, scratch volume, and volume distribution information).
System and job log messages are monitored for messages regarding disagreement between Control-M/Tape and the other tape management system.
Note: Synchronization of tape management database may also be affected by integrity problems in the Media Database. These problems can result from a system crash or a utility abend. The CTTIDB utility is run as part of the Control-M/Tape New Day procedure to verify integrity of the Media Database. For information about Media Database integrity errors, see Verifying Media Database Integrity.
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