ORA-19616: output filename must be specified if database not mounted
Cause: A datafile restore specified no target filename, but the database is not mounted. The database must be mounted when no target filename is specified, so that the target filename can be obtained from the control file
Action: The restore conversation remains active. If you wish to restore datafiles without their target filenames, then mount the datbase before continuing. Otherwise, a target filename must be specified on all datafile restoration calls
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