Solved

Set Minimum and Mximum Server memory in SQL 2005

Posted on 2011-03-23
5
422 Views
Last Modified: 2012-06-27
Hello experts,

I have SQL 2005 server with 5 instances, running on W2K3 OS and 6GB RAM (AWE enabled). How should i go about setting min and max server memory setting.
In one of the instances when I executed the following query, I got the results as shown in emded image.
SELECT   SUM(virtual_memory_reserved_kb) / 1024 AS [virtual memory allocated, MB],   SUM(virtual_memory_committed_kb) / 1024 AS [virtual memory committed, MB],      SUM(awe_allocated_kb) / 1024 AS [AWE allocated, Mb]  FROM      sys.dm_os_memory_clerks

 Screenshot
It says AWE allocated mem (mb) is 3202 whereas virtual memory allocated is 2611 MB.

Is this because I have set min and max mem as follows.
 Scsreenshot 1
Please advise, what is the best practice to set these options.

Thanks and Regards
0
Comment
Question by:goprasad
5 Comments
 
LVL 5

Expert Comment

by:idmedellin
ID: 35206129
All the instances are for production, or some of them are for other purposes, like test or development?
0
 
LVL 2

Accepted Solution

by:
EL_Barbado earned 500 total points
ID: 35207679
Hi,

Virtual Memory allocated and AWE memory Allocated are not additive. Under your scenario, your AWE memory should not go over what you have as Maximum Server memory.

Best practice is take your maximum server memory (6 GB) and reduce it by at least 1 GB. This gives you 5 GB to work with. Then, assuming all SQL instances are equal in terms of priority, you slice up the remaining memory among the instances. So, on each instance you should allocate 1024 MB of Maximum. If the instances are not equal then you can allocate memory differently but only up to 5GB in total.

Hope this helps
0
 

Author Comment

by:goprasad
ID: 35210458
Hi El Barbado,

I have 5 x instances - therefore allocate 1024 max in maximum server memory settings to each of these instances? Is this is correct?
0
 
LVL 14

Expert Comment

by:Daniel_PL
ID: 35256865
If you don't want to prioritize any of them yes, set up 1024 MB as max server memory for each instance.
0
 
LVL 2

Expert Comment

by:EL_Barbado
ID: 35258267
Yes, 1024 MB for each instance is correct In your particular situation. Please understand that this amount of memory is not ideal unless each instance is only used lightly by a few users.  Memory is cheap these days. Consider upgrading memory.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

There have been several questions about Large Transaction Log Files in SQL Server 2008, and how to get rid of them when disk space has become critical. This article will explain how to disable full recovery and implement simple recovery that carries…
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question