Oracle 8.0.5 RMAN errors

[pboshoff]

Hi,
I get the following error:
Recovery Manager: Release 8.0.5.0.0 - Production

RMAN> connect target rman/rman@ftcs;
2> connect rcvcat rman/rman@ftcs;
3> run {
4> set Command id to 'Log';
5> allocate channel t1 type 'SBT_TAPE'
6> parms 'ENV=(NSR_SERVER=backup1-6.mweb.co.za,
7> NSR_DATA_VOLUME_POOL=Default,NSR_CLIENT=prod.hs.pnp.co.za)';
8> backup (archivelog all delete input);
9> release channel t1;
10> }
11>
RMAN-06005: connected to target database: FTCS

RMAN-06008: connected to recovery catalog database

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

RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-00569: ================error message stack follows================
RMAN-00601: fatal error in recovery manager
RMAN-03004: fatal error during execution of command
RMAN-07001: could not open channel t1
RMAN-10008: could not create channel context
RMAN-10024: error setting up for rpc polling
RMAN-10006: error running sql statement: select distinct my.sid, sex.serial from v$mystat my, x$ksusex sex where sex.sid = my.sid
RMAN-10002: ORACLE error: ORA-01455: converting column overflows integer datatype

I only get this error when Legato 6.02 starts the backup, if I start the backup from the oracle server with rman cmdfile 'path to script' its works!