Erro RMAN - Não completou restauração dos dados

Caros Amigos,

Estou montando um novo servidor, e antes de colocá-lo em produção, criei uma base e estou fazendo um teste no RMAN, mas ao restaurar o backup me deparei com o seguinte erro:

...

archive log filename=/u01/app/oracle/oradata/asoec/redolog/redo2A.log thread=1 sequence=154

Oracle Error:

ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below

ORA-01245: offline file 20 will be lost if RESETLOGS is done

ORA-01111: name for data file 20 is unknown - rename to correct file

ORA-01110: data file 20: '/u01/app/oracle/product/10.2.0/db_1/dbs/UNNAMED00020'

media recovery complete, elapsed time: 00:01:34

Finished recover at 01-DEC-08

sql statement: alter database open resetlogs

released channel: t1

released channel: t2

RMAN-00571: ======================================

RMAN-00569: ======= ERROR MESSAGE STACK FOLLOWS =======

RMAN-00571: ======================================

RMAN-03009: failure of sql command on default channel at 12/01/2008 16:04:43

RMAN-11003: failure during parse/execution of SQL statement: alter database open resetlogs

ORA-01245: offline file 20 will be lost if RESETLOGS is done

ORA-01111: name for data file 20 is unknown - rename to correct file

ORA-01110: data file 20: '/u01/app/oracle/product/10.2.0/db_1/dbs/UNNAMED00020'