You experience a database corruption and do a point in time restore(PIT). Any storage pool media that was written to after the PIT is now invalid/damaged data. We resolve this by running an audit of the storage pool. The simple rule of thumb is once you've restored your TSM database, "disable sessions" so clients can't write any data, then run an "audit volume stgpool=FISH", FISH is the only parameter you need to change for you envioronment. Also audit your tape library if any tapes were used after the DB backup, you can check this by reviewing your volhist file before restoring your DB (it will be overwritten afterwards). Once auditing is complete and the server is healthy, "enable sessions".

Cheers
Ryan Partington