Read-Only Tablespaces

Read-only tablespaces can be exported. On import, if the tablespace does not already exist in the target database, then the tablespace is created as a read/write tablespace. If you want read-only functionality, then you must manually make the tablespace read-only after the import.

If the tablespace already exists in the target database and is read-only, then you must make it read/write before the import.