Wednesday, July 29, 2015

Query SQL Server Mirror details -- sys.database_mirroring

Just one more quick post today;  As I mentioned in my last post, I am preparing to perform a rolling upgrade for one of my customer's high performance mirror sessions. Well, as I'm covering all of the bases, I wanted to check sys.database_mirroring, just to be sure the mirror details are as I expect them to be.

Here is a quick query that you can use for exactly that. It will tell you which of your databases are mirrored; and it will provide the mirror state and safety, along with the mirroring role and mirroring partner.  Take a look, let me know what you think.

      DB_NAME(database_id) [Database],
      CASE WHEN mirroring_guid IS NOT NULL THEN 'Mirroring is On' 
        ELSE 'Mirroring is not configured' END [IsMirrored],
      mirroring_state_desc [MirrorState],
      CASE WHEN mirroring_safety_level = 1 THEN 'High Performance' 
           WHEN mirroring_safety_level=2 THEN 'High Safety'  
              ELSE NULL END [MirrorSafety],
      mirroring_role_desc [MirrorRole],
      mirroring_partner_instance [MirrorPartner]

These are the results from my customer's server, where that black smudge is the name of their Mirror SQL Server:

Pretty handy, I'd say. Take a look at this for more details on sys.database_mirroring:

No comments:

Post a Comment