the specified client does not exist in the specified policy

[dhrdeb]

We are running oracle database backup and it is throwing below error in backup log.

RMAN-03009: failure of backup command on ORA_SBT_TAPE_1 channel at 11/28/2012 05:04:11

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

ORA-27028: skgfqcre: sbtbackup returned error

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

VxBSACreateObject: Failed with error:

Server Status: the specified client does not exist in the specified policy

How do I validate this and how to resolve this?

[Kiran_Bandi]

Start form here: "Server Status: the specified client does not exist in the specified policy"  

Make sure you have correct policy name mentioned in RMAN script. 

ORA-19511: Error received from media manager layer

Above error can be cauesed by so many things like block size mismatch, misconfiguration of ORACLE policy or clients, bad medias, bad tape hardware etc... In your case resolving policy/script issue would resolve this error.

[Marianne]

I agree with Kiran - start with the script. 

See if policy and/or client name is hard-coded in the script.
Maybe policy name is specified in script, but not client name. In this case, the Client name in bp.conf  (assuming this is Linux/Unix client) is sent to the master.
Compare client settings with policy config.

Best to ensure that the following logs exist for troubleshooting: 

On master: bprd (restart NBU after creating folder)
On client: dbclient (with 777 permissions on Linux/Unix)

[Will_Restore]

Along with the above, check RMAN script and .out file for NB_ORA_CLIENT and NB_ORA_POLICY settings.

[Yasuhisa_Ishika]

In additon, please tell us if your Oracle is running in cluster and its hostname(both virtual and physical).