5 Replies Latest reply: Feb 13, 2013 10:34 AM by 986452 RSS

    RMAN Cloning

    986452
      Hello everybody,

      I have few questions regarding RMAN DUPLICATE command.

      1) We cant keep a clone database updated using RMAN incremental backups of the target/production due to different DBIDs. Right?

      2)When rman duplicates the database does it create the tablespace sizes exactly the same or create what is actually being used in the tablespace?

      With regards
        • 1. Re: RMAN Cloning
          Seberg
          1) We cant keep a clone database updated using RMAN incremental backups of the target/production due to different DBIDs. Right?

          To Resynchronize a Duplicate Database requires making complete copies of the datafiles of the duplicate database.

          2)When rman duplicates the database does it create the tablespace sizes exactly the same or create what is actually being used in the tablespace?

          The tablespace will be the same, you can change the file locations, but the size should be the same.
          • 2. Re: RMAN Cloning
            SPA2
            Hi,
            could you please describe your requirements a little bit.
            It seems to easier to look then for a strategy for the cloning of databases.
            (May be snapshot standby database will be alternative.)

            Which Oracle Version you are using and which plattform?

            thanks

            regards
            SPA2
            • 3. Re: RMAN Cloning
              brunors
              What S.O do you using?

              Kind regards,
              Bruno Reis.
              • 4. Re: RMAN Cloning
                Hemant K Chitale
                We cant keep a clone database updated using RMAN incremental backups of the target/production due to different DBIDs. Right?
                Incremental Backups cannot be applied to a database with a different DBID. In fact, once you OPEN the cloned database, it has already diverged from the source database.
                When rman duplicates the database does it create the tablespace sizes exactly the same or create what is actually being used in the tablespace?
                The datafiles are created with the same sizes as in the source database. (A Tablespace is only a logical grouping of one or more datafiles).


                Hemant K Chitale
                • 5. Re: RMAN Cloning
                  986452
                  Thanks