Mirroring and SQL logins...

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Mirroring and SQL logins...

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rarara

Posted Tuesday, August 21, 2012 7:53 AM

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Hi, If I run "select * from sys.sql_logins" on my principal and mirrored servers it gives me the exact same results in terms of names, SID, created dates etc. The only discrepancies are with these:

Default database - on the principal it has the user database as the default for the logins, but on the mirrored server the logins list master as default. presumably that is because the mirrored version has a 'Restoring...' status. If there was a failover, would the default database change to be the user DB automatically?

Principal ID - these numbers are slighty out of sync between both servers. Can that be ignored?

I want to know that if mirrored failover occurs, will all SQL logins be fully functioning??

Post #1347801

Lynn Pettis

Posted Tuesday, August 21, 2012 8:02 AM

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The key for the SQL Logins is the SID, and since they are the same, there should be no problems. As far as the default database changing on a failover, I'm not sure. The best way to find out is test it a test environment and see what happens.

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Post #1347805

opc.three

Posted Thursday, August 30, 2012 11:25 AM

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rarara (8/21/2012)

Default database - on the principal it has the user database as the default for the logins, but on the mirrored server the logins list master as default. presumably that is because the mirrored version has a 'Restoring...' status. If there was a failover, would the default database change to be the user DB automatically?

Mirroring is at the database level, so no. You'll need to add this to your DR plan. Next time consider creating a shell database, associate each Login with the default database they have on the primary and then initialize your mirroring sessions. That said, it's still a good idea to script things like this out periodically for use after a failover. Just in case anyone has changed their default database on the primary to another mirrored database.

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There are no special teachers of virtue, because virtue is taught by the whole community. --Plato

Believe you can and you're halfway there. --Theodore Roosevelt

Everything Should Be Made as Simple as Possible, But Not Simpler --Albert Einstein

The significant problems we face cannot be solved at the same level of thinking we were at when we created them. --Albert Einstein

1 apple is not exactly 1/8 of 8 apples. Because there are no absolutely identical apples. --Giordy

Post #1352388

durai nagarajan

Posted Friday, August 31, 2012 4:38 AM

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opc.three ,

hope login created dates are matched because of master DB sync?

Regards
Durai Nagarajan

Post #1352688

opc.three

Posted Friday, August 31, 2012 6:00 AM

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durai nagarajan (8/31/2012)

opc.three ,

hope login created dates are matched because of master DB sync?

Sorry, I do not get your comment. Please clarify.

__________________________________________________________________________________________________
There are no special teachers of virtue, because virtue is taught by the whole community. --Plato

Believe you can and you're halfway there. --Theodore Roosevelt

Everything Should Be Made as Simple as Possible, But Not Simpler --Albert Einstein

The significant problems we face cannot be solved at the same level of thinking we were at when we created them. --Albert Einstein

1 apple is not exactly 1/8 of 8 apples. Because there are no absolutely identical apples. --Giordy

Post #1352738

durai nagarajan

Posted Friday, August 31, 2012 6:45 AM

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as the user specified select * from sys.sql_logins datas are matching on both the servers.

is it matching due to master DB mirroring?

Regards
Durai Nagarajan

Post #1352765

opc.three

Posted Friday, August 31, 2012 8:22 AM

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durai nagarajan (8/31/2012)

as the user specified select * from sys.sql_logins datas are matching on both the servers.

is it matching due to master DB mirroring?

The same except for the two columns mentioned.

No, master cannot be mirrored.

@rarara, are your two instances running under the same domain account?

__________________________________________________________________________________________________
There are no special teachers of virtue, because virtue is taught by the whole community. --Plato

Believe you can and you're halfway there. --Theodore Roosevelt

Everything Should Be Made as Simple as Possible, But Not Simpler --Albert Einstein

The significant problems we face cannot be solved at the same level of thinking we were at when we created them. --Albert Einstein

1 apple is not exactly 1/8 of 8 apples. Because there are no absolutely identical apples. --Giordy

Post #1352845

durai nagarajan

Posted Friday, August 31, 2012 9:05 AM

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[b]opc.three (8/31/2012No, master cannot be mirrored.

Thanks, i have read it somewhere , but how did the other details gone to the secondary server?

Regards
Durai Nagarajan

Post #1352884

opc.three

Posted Friday, August 31, 2012 9:11 AM

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That's why I asked about the account the partners are running under. In some configs logins go over automatically, in others they do not.

__________________________________________________________________________________________________
There are no special teachers of virtue, because virtue is taught by the whole community. --Plato

Believe you can and you're halfway there. --Theodore Roosevelt

Everything Should Be Made as Simple as Possible, But Not Simpler --Albert Einstein

The significant problems we face cannot be solved at the same level of thinking we were at when we created them. --Albert Einstein

1 apple is not exactly 1/8 of 8 apples. Because there are no absolutely identical apples. --Giordy

Post #1352894

durai nagarajan

Posted Friday, August 31, 2012 9:30 AM

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opc you mis-understood this is not @rarara.

i asked my doubt related to that.

Regards
Durai Nagarajan

Post #1352913

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