RMAN/NETBACKUP/ORACLE 8.1.6 Configuration Problems

We have SUN engineers configure and setup Netbackup and RMAN: since then we get repeated errors on all our databases: including the following: ORA-196506 failed to create sequential file returned error and

rman-20242: specification does not match any archivelog in the recovery catalog
(this we solve and it keeps repeating after the archivelogs have been
deleted).

Some instances just hang when it needs the tape.

Does anyone have any advise/comments. Should we rip it all out and install from fresh ? I also feel that there were some patches added and the relinking of netbackup and oracle was not done.

Thanks for any advise
Sam

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