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SQL 2008 and Server 2008

Posted on 2011-09-22
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How do i determine how much ram is dedicated to a SQL database? I have a 14 GB Server and i am told SQL was dedicated 10 GB of those resources.. Where can i find out how much is being allocated for SQL.

Reason i am asking is because the server is in a virutal machine and it appears to only be getting 6 GB of ram instead of the 14 GB.. My thought is that because it's only given it 6 GB than the SQL database would assume it gets the entire 6 GB everytime it runs? Would that be a correct statement?

vmware, sql 2008 , server 2008 R2 64bit
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Question by:Epic7
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zvytas earned 500 total points
ID: 36580936
Run the following query:

sp_configure 'show advanced options', 1
RECONFIGURE
GO

sp_configure 'max server memory'
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by:Epic7
ID: 36581053
For a noob, where am i running this query?
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by:zvytas
ID: 36581060
In the SQL Management Studio.
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by:Epic7
ID: 36581214
So it is setup with 10,240 MB = 10.24 gb of ram.

How would i go about changing the config_value to say 5 gb?
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Expert Comment

by:zvytas
ID: 36581243
Execute the following query:

sp_configure 'max server memory', 5120;
GO
RECONFIGURE;
GO
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by:Epic7
ID: 36581361
Will this require a reboot or service outage?
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by:zvytas
ID: 36581466
Microsoft is a bit vague on that, they state that restart might be required to free up memory. My guess is that you will need to restart the server if it uses more than 5 GB at the time of the change.
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by:Epic7
ID: 36581482
So what query would tell me real time of ram usage for the SQL database.
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by:zvytas
ID: 36581506
This one should do it:

CREATE TABLE #memusage (ID [int] IDENTITY(1,1), counterName [varchar] (MAX), value [bigint]);

INSERT INTO #memusage
EXEC ('DBCC MEMORYSTATUS');

SELECT value / 1024
  FROM #memusage
 WHERE [counterName] = 'Working Set';

DROP TABLE #memusage;
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by:Epic7
ID: 36581536
very odd. So an application that is getting SQL time out's and such but when i run the script above it shows that the SQL DB is only using 305,472 MB..

Why would there be SQL time out's if the databse isn't even using a GB of ram?
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by:zvytas
ID: 36581596
There is no direct correction between memory usage and timeouts. Timeouts are outside of this thread, but I would suspect you have a slow running query, but this has nothing to do with memory usage.
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