RMAN duplicate is failing : database session for channel <channel_name> terminated unexpectedly

Hello all,

I am trying to duplicate a 3TB database, which has 927 datafiles. It is failing 
with the following error. Some of the google notes refers me to work with the 
backup media vendor. I have contacted Netbackup vendor Symantec but has not got 
a solution yet and wondering if anyone from this list experienced similar 
problem and have some recommendations. 
Database version: 10.2.0.4
Netbackup client for Oracle: NetBackup-Solaris10 6.5.5
OS: Sun Solaris 10.

Channel aux4: reading from backup piece /incr0_TWDMAS_365890_776372926_a2n4d0lu
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 03/19/2012 09:50:58
RMAN-03015: error occurred in stored script Memory Script
RMAN-10038: database session for channel aux1 terminated unexpectedly

BTW: I am able to duplicate many other databases (all smaller than this 
problematic one) to the same UNIX server without any problem. Not sure if the 
size or the high number datafiles in backup is causing any issue or not.

Thanks,
Ashoke Mandal

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