Drop database Using RMAN command.

Run below command in RMAN prompt.  You must be connected to a target database and database is mount exclusive and not open. You need to start RESTRICT mode.

RMAN> connect target /

connected to target database: TEST (DBID=233344476, not open)

RMAN> SQL 'ALTER SYSTEM ENABLE RESTRICTED SESSION';

using target database control file instead of recovery catalog

sql statement: ALTER SYSTEM ENABLE RESTRICTED SESSION

RMAN> DROP DATABASE INCLUDING BACKUPS;

database name is "TEST" and DBID is 233344476

Do you really want to drop all backups and the database (enter YES or NO)? YES

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=421 device type=DISK

specification does not match any backup in the repository

released channel: ORA_DISK_1

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=421 device type=DISK

specification does not match any datafile copy in the repository

specification does not match any control file copy in the repository

specification does not match any control file copy in the repository

specification does not match any archived log in the repository

database name is "TEST" and DBID is 233344476

database dropped