Approximate time needed for normal shutdown of the instance

how to figure out how much time needed to stop the oracle instance?
do the oracle "shutdown immediate" in case when OS is shutting down or "shutdown normal"?
What will be the result if there are still long-running transactions when OS shutdown initiated?

Anton Kharus wrote:
how to figure out how much time needed to stop the oracle instance?
By measuring the shutdown timings from time to time.
do the oracle "shutdown immediate" in case when OS is shutting down or "shutdown normal"?
What will be the result if there are still long-running transactions when OS shutdown initiated?
Oracle is only shutdown at a system shutdown if you configure shutdown scripts to do so.
Depending on the OS you have these scripts must be placed somewhere in /etc/rc?.d or /sbin/rc?.d
It is ofcourse depending on the shutdown type, and the amount of running session.
Shutdown normal will wait until all users have disconnected
Shutdown immediate will wait until all users have ended their running statement
Shutdown transactional will wit for users to and an active transaction
Shutdown abort will not wait, but leave the database in a to-be recovered state.
Shutdown abort should only be used in case all other shutdown commands do not work, or there has been some kind of error leaving some database processes running.
HTH,
FJFranken
My Blog: http://managingoracle.blogspot.com

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