You cannot roll back a
DATABASE statement to drop the database. This statement is useful when you want to drop a test database or drop an old database after successful migration to a new host.
Oracle Database Backup and Recovery User's Guide for more information on dropping the database
You must have the
SYSDBA system privilege to issue this statement. The database must be mounted in exclusive and restricted mode, and it must be closed.
When you issue this statement, Oracle Database drops the database and deletes all control files and data files listed in the control file. If the database used a server parameter file (spfile), then the spfile is also deleted.
Archived logs and backups are not removed, but you can use Recovery Manager (RMAN) to remove them. If the database is on raw disks, then this statement does not delete the actual raw disk special files.