This might be off track but you did the backup with 5 channels whilst trying the restore with 4 channels. What happens if you try the restore with 5 channels? HTH, Bruce Reardon NOTICE: This e-mail and any attachments are private and confidential and may contain legally privileged information. If you are not an authorised recipient, the copying or distribution of this e-mail and any attachments is prohibited and you must not read, print or act in reliance on this e-mail or attachments. This notice should not be removed. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Jared.Still@xxxxxxxxxxx Sent: Friday, 4 June 2004 10:11 AM Sounds like you should be talking to your Tivoli folks. They are responsible for implementing the RMAN interface to their product. Since a single channel restore works, it would seem they have some 'issues' in their system with multiple channel restores to RMAN. Jared oracle-l-bounce@xxxxxxxxxxxxx wrote on 06/03/2004 04:51:12 PM: > I am evaluating TDP 2.2 (Tivoli Data Protection for Oracle) > to backup oracle database using RMAN. I did a full backup > with 5 RMAN channels. The RMAN backup includes about 15 backup > peices size ranging fron 9gb-23gb. Now I am trying > restore using multiple channels(4) which is failing after > restoring about 30%. I tried restore with just 2 channels > which also failed after 80%. I am getting either "Session > rejected: Communications protocol error" or "datafile xx not > restored due to missing or corrupt data" errors. > With single channel the restores works just fine. The Oracle version is 9.2.0.4 and the backup > server has 7 diskpools. > > Thanks > Manmohan