Hi there

        I use tdp for oracle 2.2 on a tsm4.2 server
        I allocate 2 channels for the rman backup, t1 and t2
        when the backup starts, it initially starts to write to 2 tapes.
        After a short while, one drive goes idle and the other tape
        continually gets written to, till completion of the backup.

        Anyone have any idea as to what is causing one the tapes to go
        idle?

        The backup files aren't very big.
        channels t1 and t2 continue to get 'allocated' to completion if the
job.
        The mountretention on the devc is big.
        what else could I check?

        cheers

        steve


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