Is a cold backup consistent if you close your database with SHUTDOWN ABORT?

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It is good practice to perform an orderly shutdown (NORMAL, TRANSACTIONAL, or IMMEDIATE) before performing the cold backup. However, you will still obtain a consistent cold backup if you perform a SHUTDOWN ABORT. And I have had no issues restoring from such a backup in the past. But just to be safe, I always recommend an orderly shutdown.

I have had some instances that take a very long time for an orderly shutdown. For those cases, I perform a SHUTDOWN ABORT, STARTUP RESTRICT and then a SHUTDOWN IMMEDIATE. This way, I can ensure an orderly shutdown has been performed, and the instance terminates much more quickly than if I did not do the SHUTDOWN ABORT.

This was first published in July 2008

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