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SQL Server Express 2012 process takes a lot of memory

Posted on 2013-06-27
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Last Modified: 2013-06-28
I'm using SQL Server Express 2012 on Windows8. Looking at the memory usage of SQL Server Express service in Task Manager I see:
Before running SSMS: 10 MB.
During SSMS usage: 35 MB.
(Long) after closing SSMS: 154 MB! the process is stuck in memory, and remains like that until I end it manually or restart Windows.
Is this behaviour normal? Is there anyhing I can tune in SQL Server so that the process won't stuck in memory?
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Question by:NNOAM1
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by:EvilPostIt
ID: 39280752
Are you referring to the memory usage for SSMS.exe or SQLServr.exe?

If SQLServr.exe, this is because when SQL Server uses memory it does not release it unless restarted.
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by:NNOAM1
ID: 39280773
Not the SSMS itself, but the SQL service. Watch this picture - now it's gone up to 210 MB (don't mind the hebrew words and RTL task manager):my task manager right now
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by:EvilPostIt
ID: 39280785
In SSMS right click on the instance, goto the memory tab and change the max memory to 50mb. This should release a significant amount of memory. If you need to use more just change it back.
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by:EvilPostIt
ID: 39280810
Either that or just stop the SQL Server service when you are not using it...
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by:NNOAM1
ID: 39280836
Is changing the max memory to 50mb going to reduce anything from the good function of SQL server? What are the consequences of such change?
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by:EvilPostIt
ID: 39280899
Yes, but if you change it back afterwards this is fine. It just allows you to release the used memory.
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by:NNOAM1
ID: 39280912
I just did that and then closed SSMS. when i reopened SSMS I couldn't connent. The error message showed me the way to:
http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&EvtSrc=MSSQLServer&EvtID=233&LinkId=20476
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Control application downtime with dependency maps

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by:EvilPostIt
ID: 39280931
You didnt need to close SSMS. If you stop and start the sql server service do you get the same error?
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by:NNOAM1
ID: 39280980
YES.
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by:EvilPostIt
ID: 39281084
What if you just try to open a new query instead of using the Object Explorer section? Or maybe trying an osql connection from the command line?
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by:EvilPostIt
ID: 39281097
Also do you have any other services configured to use this SQL server? The other option might be to start it up in single user mode...
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by:NNOAM1
ID: 39281537
A restart did the thing. Thanks anyway.
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by:EvilPostIt
ID: 39281547
Phew, thought I had broken your instance for a minute there... Probably best to raise the max memory a little though.

Did the reduction in max memory size have the desired result though?
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by:NNOAM1
ID: 39281807
Even after the reduction the memory usage of the process remained high as in the beginning. I'll leave it like that.
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EvilPostIt earned 500 total points
ID: 39284210
Unfortunately this is just how SQL Server operates. It is a service after all rather than a development tool like SSMS or Visual Studio.
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Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

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