RMAN Validation consistently failing with "allocation failed"

[Dollypee]

Master server: WIN@K3R2

Client : AIX 5.3

Netbackup version: 7.1.0.4

Hello, backup ran successfully, but validation consistently failing with " allocation failed"

From RMAN:

__________________________________________________________________________________
channel ORA_SBT_TAPE_1: starting validation of archived log backup set
channel ORA_SBT_TAPE_1: reading from backup piece 0ppe4d0p_1_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of validate command on ORA_SBT_TAPE_8 channel at 07/24/2014 02:13:05
ORA-19870: error while restoring backup piece c-2068283923-20140723-03
ORA-19507: failed to retrieve sequential file, handle="c-2068283923-20140723-03", parms=""
ORA-27029: skgfrtrv: sbtrestore returned error
ORA-19511: Error received from media manager layer, error text:
   Failed to open backup file for restore.

hcbi01:/usr/openv/netbackup/logs/user_ops/dbext/logs:higgsdv1> cat 42074202.0.1406182382
Restore started Thu Jul 24 02:13:02 2014

02:13:04 INF - Server status = 10
02:13:07 (6258200.xxx) INF - Status = allocation failed.

__________________________________________________________________________________

From netbackup activity monitor

7/24/2014 2:13:40 AM - begin Restore
7/24/2014 2:13:43 AM - end Restore; elapsed time: 00:00:03
allocation failed(10)

I have applied this TN: http://www.symantec.com/business/support/index?page=content&id=TECH76719

But still failing after running successfully for few days.

Please help!

[Michael_G_Ander]

I would check what an error 10 is and see if I could find the failing fileset in bplist

As always when troubleshooting database backups/restore I would create bphdb and dbclient log directories on the client. Be aware that dbclient needs 777 permission on Unix

A thing I have making a validation/restore fail, is difference in time on the client and master

[Marianne]

Please tell us the whole story...

Are you restoring to the same or alternate client?

Same NBU and Oracle version?

Is this client also a media server? (Doing own restore?)

Can we see the entire RMAN output file?

More info about what exactly has been  'running successfully for few days'?

Did you remember to create dbclient log folder (with 777 permissions) before restore was started? 
Does bprd log folder exist on the master server?
Please post logs as File attachments.

TECH76719 will only work for a filesystem backup. bpbkar process is not used during Oracle restore.
Have dba's and sysadmins checked system resources? Oracle SGA memory, shared memory, etc?