Hi

has anyone used datafilecopy in rman 9i?

I get this error

RMAN> BACKUP DATAFILECOPY '/tmp/users.dbf';

Starting backup at 17/06/03
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 06/17/2003 08:46:33
RMAN-06004: ORACLE error from recovery catalog database: RMAN-20230: datafile copy not found in the recovery catalog
RMAN-06015: error while looking up datafilecopy name: /tmp/users.dbf