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RMAN backups of HP-UX dedicated storage node fail with error "Dedicated storage node leda2 cannot save remote data from client cora127n1.melkweg.tld"

Hello,

I opened a service request (# 35960002) about a problem we're having with RMAN backups on HP-UX cluster nodes. There isn't much progression in the case, so I thought maybe someone here might have some ideas how to solve this puzzle. Problems started when we upgraded the Networker software on the HP-UX nodes from 7.4.3 to 7.5.2. The HP-UX cluster nodes are also dedicated storage nodes. The file system backup is working fine. But the RMAN backups (client initiated) generate this error message:

input datafile fno=00009 name=/d10/oradata/tstcds02/user/ino_index/r152m001

channel c1: starting piece 1 at 02-AUG-10

released channel: c1

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03009: failure of backup command on c1 channel at 08/02/2010 13:27:46

ORA-19506: failed to create sequential file,, parms=""

ORA-27028: skgfqcre: sbtbackup returned error

ORA-19511: Error received from media manager layer, error text:

   Dedicated storage node leda1 cannot save remote data from client cora127n1.melkweg.tld. (0:5:13)

We tried several things. we even re-installed the older Networker version 7.4.3, but still we receive the same error message. The curious thing is that we have a similar HP-UX cluster that we also upgraded along with this cluster and there we have no problem at all.

I hope someone has encountered this problem before and has an answer for this problem.

Regards,

Martijn

PROBLEM DESCRIPTION:
------------------------------------
Fact: NetWorker Storage node for Unix (HP-UX) 7.5.2

Fact: Networker Module for Oracle 5.0

Fact: HP-UX Cluster 11.23

Fact: Dedicated Storage node

Symptom: Error: 'Dedicated storage node leda2 cannot save remote data from client cora127n1.melkweg.tld'

Symptom: Manual backups (RMAN) from clustered dedicated storage node sometimes fail

Symptom: Schedule backups (server initiated) to clustered dedicated storage node succeeds

Symptom: Manual backups (RMAN) from clustered dedicated storage node from a different HP-UX cluster succeed

Change: upgrade Networker software from version 7.4.3 to version 7.5.2

ENVIRONMENT INFORMATION
------------------------------------
<<Product Information>>
Product: NetWorker Storage Node for Unix
Version: 7.5.2

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