Showing posts with label shutsdown. Show all posts
Showing posts with label shutsdown. Show all posts

Saturday, February 25, 2012

No witness, primary shutsdown, bring failover online

First of all, Great webcast today. My question is, I have everything up and running and would like to know what to do when the machine my primary is on quits or has a some type of disaster. Do I need to manually run recovery on each db that was mirrored? I'm not currently running a witness.

thanks

No, you don't need to recover anything but depending on which mode you are running you will need to iether manually initiate a failover from server A to B or force the service from server A to B because you are running without a witness.

do you know what mode you are running, high-performance or high-protection?

|||Everything runs in high Safty and just to be clear I'm looking at the scenario where the primary just dies.|||

ok, so you're running high protection mode.

I will have to correct myself here first, running in either high performance or high protection requires that you force service from server A to B. In books Online, look up the topics:

Forced Service (with Possible Data Loss)

and

How to: Force Service in a Database Mirroring Session (Transact-SQL)

these will explain in more detail than I ever could!

Hope this helps

|||

This is correct. If the principal cannot be contacted, then the way to make the databases available on the mirror is to turn off mirroring or to issue a "FORCE_SERVICE_ALLOW_DATA_LOSS"

Thanks,

Mark