I'm just learning how to use RMAN and I'm having a problem with it dying on me. I can't understand what the problem might be and I was hoping something is painfully obvious in the output I've included.
Thanks for any help,
Mark

3> run {execute script backup_db_full;}
4>
RMAN-06005: connected to target database: OPTIMAXX

RMAN-06008: connected to recovery catalog database

RMAN-03021: executing script: backup_db_full

RMAN-03021: executing script: alloc_1_tape

RMAN-03022: compiling command: set
RMAN-03023: executing command: set command id

RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-08030: allocated channel: t1
RMAN-08500: channel t1: sid=30 devtype=SBT_TAPE

RMAN-03022: compiling command: set limit
RMAN-03023: executing command: set limit

RMAN-03022: compiling command: backup
RMAN-03025: performing implicit partial resync of recovery catalog
RMAN-03023: executing command: partial resync
RMAN-08003: starting partial resync of recovery catalog
RMAN-08005: partial resync complete
RMAN-03023: executing command: backup
RMAN-08008: channel t1: starting datafile backupset
RMAN-08502: set_count=148 set_stamp=425006540
RMAN-08010: channel t1: including datafile 13 in backupset
RMAN-08010: channel t1: including datafile 2 in backupset
RMAN-08010: channel t1: including datafile 23 in backupset
RMAN-08010: channel t1: including datafile 1 in backupset
RMAN-08011: channel t1: including current controlfile in backupset
RMAN-08010: channel t1: including datafile 4 in backupset
RMAN-08013: channel t1: piece 1 created
RMAN-08503: piece handle=df_t425006540_s148_p1 comment=API Version 2.0,MMS Version 3.1.0.0
RMAN-08008: channel t1: starting datafile backupset
RMAN-08502: set_count=149 set_stamp=425008571
RMAN-08010: channel t1: including datafile 18 in backupset
RMAN-08010: channel t1: including datafile 9 in backupset
RMAN-08010: channel t1: including datafile 11 in backupset
RMAN-08010: channel t1: including datafile 6 in backupset
RMAN-08010: channel t1: including datafile 15 in backupset
RMAN-08010: channel t1: including datafile 8 in backupset
RMAN-00569: ================error message stack follows================
RMAN-00601: fatal error in recovery manager
RMAN-03004: fatal error during execution of command
RMAN-10039: error encountered while polling for RPC completion on channel t1
RMAN-10006: error running sql statement: select act from x$ksusex where sid=:1 and serial=:2
RMAN-10002: ORACLE error: ORA-01089: immediate shutdown in progress - no operations are permitted