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How much memory should be allocated to SQL Server ?


How much memory should be allocated to SQL Server ?

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Joy Smith San
Joy Smith San
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Dear All,

I have a dedicated server for SQL server database.
It has got 16 GB memory, windows server 2003.
SQL server 2005 64 bit with SP3.
Database size is 260GB

There is no any other application which needs any considerable amount of memory.

Approximately 125 users will be accessing SQL server simaltaneously.

So, Idealy, how much memory should I allocate to SQL Server ?


Thanks in advance.
GilaMonster
GilaMonster
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12-14 GB. No more (and I'd err on the lower end of that). OS needs memory to manage memory, not good to starve it.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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Joy Smith San
Joy Smith San
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Thanks,

At present only 4GB is allocated. Sometimes application runs very very slow.
GilaMonster
GilaMonster
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Joy Smith San (2/24/2010)
Sometimes application runs very very slow.


That isn't necessarily insufficient memory. Yes, memory may help, but you should also look at what's running and see what needs fixing/changing to make it run better.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


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