What is the purpose of the User Account SQLService?

Posted on 2006-10-30
Medium Priority
Last Modified: 2008-02-01
I have looked in three books, searched MSDN, google and ASK - and I can not get a definition for SQLService -

what is it?
what is it used it for?
Is it created when SQL Server 2000 is installed?

Question by:KimberleyY
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Accepted Solution

nmcdermaid earned 500 total points
ID: 17839698
SQLService - This particular word could mean a couple of things so here's the long explanation.

"SQL Server" runs as a service. A service is a 'program' that is running on the server at all times (even when you're not logged in)

If you open up the services applet (start/settings/control panel/administrative tools/services) you will see that there are a whole load of services running on your computer (including MSSQLSERVER). You can in fact stop and start these services.

The SQL Server Service (MSSQLSERVER) does these things (and more):
-accepts incoming connections over the network
-writes stuff to database files

When the service performs files operations, it needs to have a 'security context'.

For example when the service requests windows to delete all of your MP3 files, windows needs to know if that request is from a user who has sufficient rights to delete those files.

You can actually see the security context in the Services applet - its under 'Log On'. That is the account that the service runs under.

Generally the SQL Server account is not an issue as its only doing things locally.

Its actually the SQL Server Agent account that is usually the issue as by default it is a 'Local' user that doesn't know anything about (or have any rights on) the network.

Then when you try to get the SQL Agent to copy a network file (by creating a scheduled job) it fails because the service is not running under an account that can do network operations.


Author Comment

ID: 17842309
Thanks for a very nice and simple to understand answer.

Its like a word you know because you can infer what it means based on how its used - I just wanted to be sure befire I explained it to someone else

Great Job!
LVL 30

Expert Comment

ID: 17846999
Glad to help.

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