3 Replies Latest reply on May 17, 2011 7:11 PM by Atiq

    primary and standby


      in which situations we will convert primary db as standby and standby as primary.

      thank you
        • 1. Re: primary and standby
          This is switchover case:

          A switchover is typically used to reduce primary database downtime during planned outages, such as operating system or hardware upgrades, or rolling upgrades of the Oracle database software and patch sets (described in Chapter 12, "Using SQL Apply to Upgrade the Oracle Database").

          Please read more in Data Guard doc: http://download.oracle.com/docs/cd/E11882_01/server.112/e17022/rollup.htm#BABGHIGF.

          Edited by: P. Forstmann on 17 mai 2011 19:32
          1 person found this helpful
          • 2. Re: primary and standby
            when all else fails Read The Fine Manual

            • 3. Re: primary and standby
              This conversion can be done in two ways: switchover or failover..

              A failover is used when the primary db becomes unavailable and there is no possibility of restoring it back to service within a reasonable amount of time.
              Whereas switchover is used to reduce the primary db downtime during hardware changes or upgradation tasks..