Avatar of techieeguy
 asked on

Windows 2008 R2 | SQL 2008 R2 Express 64 bit - Info required about AWE, Locked pages to understand Memory usage


I was setting up a test lab to understand SQL server 2008 64 bit AWE/Lock pages feature and how it would effect Windows 2008 R2 server

My server config : I have 2 CPUS & 8 GB RAM

setup  SQL 2008 R2 Express 64 bit with instance name sqlexpress
enabled AWE, Set 5 GB of RAM as Minimum & Maximum
When i checked in taskmanger the memory usage is around 200 MB for sqlservr.exe process
And overall Physical Memory usgae is 600 MB
restarted my test server no luck
AM I missing something how to make SQL lock 5 GB which was allocated to it using AWE, Lock memory
Any help is highly appreciated

I tried using below command and also tried GUI
USE master
sp_configure 'show advanced options', 1
EXEC sp_configure 'min server memory', 680 -- 2 GB min, replace with your desired amount here
EXEC sp_configure 'max server memory', 680 -- 6 GB min, replace with your desired amount here

USE master -- database name
sp_configure 'show advanced options', 1
sp_configure 'awe enabled', 1

Thanks in Advance
Microsoft SQL Server 2008Windows Server 2008

Avatar of undefined
Last Comment
Seth Simmons

8/22/2022 - Mon
Robert Schutt

It looks like you only changed the comment, try changing 680 to 2048 for example:
EXEC sp_configure 'min server memory', 2048 -- 2 GB min, replace with your desired amount here

Open in new window

(same goes for max)
Robert Schutt

BTW, max with express may be 2 (or even 1) GB, and AWE not applicable, not sure though...

I was reading this: http://msdn.microsoft.com/en-us/library/ms143685(v=sql.105).aspx

Thanks for your quick response

sorry to post wrong command i did change them to 5 GB when i tried pls refer attached screenshots sql02.jpg & sql03.jpg  sql instance sqlexpress server properties -> Memory and from my task manager
current physical usage is 1 gb
This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.

Hi Robert Schutt
I saw your 2nd comment and the blog pls disregard my above comment the blog provided by you does makes sense seems SQL express will not cross 1GB

Could you confirm if i did the same with a sql server this command will work and i can lock pages i will try with sql if it requires
Anthony Perkins

If you are trying to lock pages in memory, you are not going about it the right way.  This is how you do it: How to: Enable the Lock Pages in Memory Option (Windows)
Robert Schutt

View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
Anthony Perkins

Locking pages in memory is not required on 64-bit operating systems.
This is not as cut and dried as MS would like us to think.  There is a lot of debate on this among the leading SQL Server MVPs.  Let me know if you need blogs on this subject and I can search for them.
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.

Sorry for delayed response
just download sql 2012 iso which was 3.6 GB size and installed 64 bit, yeah AWE option is not there but lock pages can still be enabled as per "Anthony Perkins" blog by using group policy.

To enable the lock pages in memory option using group policy

    On the Start menu, click Run. In the Open box, type gpedit.msc.

    On the Local Group Policy Editor console, expand Computer Configuration, and then expand Windows Settings.

    Expand Security Settings, and then expand Local Policies.

    Select the User Rights Assignment folder.

    The policies will be displayed in the details pane.

    In the pane, double-click Lock pages in memory.

    In the Local Security Setting – Lock pages in memory dialog box, click Add User or Group.

    In the Select Users, Service Accounts, or Groups dialog box, add an account with privileges to run sqlservr.exe.

    Log out and then log back in for this change to take effect.

I have 2 days off from tomorrow, i am trying from some script or way to grow my database above 4 gb and check if lock pages are visible using Rammap and Vmmap.

What i am basically trying to achieve is to understand this feature as i could see some times we are unable to track/monitor memory usage of windows server due to this,

I tried reading lot of material and spent lot of time still unable to understand how this works. Any blog with steps to achive above is good enough. I don't want to waste your time so any good material will do and i can close this question :)
Robert Schutt

one of my favorite sql websites is blog.sqlauthority.com, I searched there and found links to pages mentioned in earlier posts, but also to http://support.microsoft.com/kb/918483 where, under the heading "Improvements in Windows Server 2008 and in Windows Server 2008 R2" (near the bottom), you find some more (hopefully interesting) info about why it shouldn't be necessary although the goal of the page seems to be explain how to do it anyway.
Seth Simmons

This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes