TDPO for Oracle gives operation disallowed: snapshot controlfile enqueue unavailable

[tsmboys]

Hi

One of TDPO oracle client give following error.

released channel: ch1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ch1 channel at 01/11/2009 06:56:09
ORA-00230: operation disallowed: snapshot controlfile enqueue unavailable

Recovery Manager complete.



Any Help..