The client looks to start the backup fine and then it ends with the following 
error

channel t2: starting piece 1 at 21-SEP-10
RMAN-03009: failure of backup command on t1 channel at 09/21/2010 17:32:16
ORA-19506: failed to create sequential file, name="df_PCOLIO_730315831_6026_1", 
parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
   lnm_index_cfx_connect retry failed.  See privious error messages. (3:3:111)
channel t1 disabled, job failed on it will be run on another channel
released channel: t1
released channel: t2
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on t2 channel at 09/21/2010 17:32:16
ORA-19506: failed to create sequential file, name="df_PCOLIO_730315831_6027_1", 
parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
   lnm_index_cfx_connect retry failed.  See privious error messages. (3:3:111)


Please any suggestions are greatly appreciated.

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