Oracle database fails to be opened with the error "unable to lock file - already in use"
Applies to
- NFS
- Oracle hosts
Issue
Oracle database fails to be opened with the error "unable to lock file - already in use".
Example:
ALTER DATABASE MOUNT
ORA-00210: cannot open the specified control file
ORA-00202:control file:'/oradata2/datafile/UCND0005/controlfile/control02.ctl'
ORA-27086: unable to lock file - already in use