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SP_WHO2

Posted on 2008-06-16
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Last Modified: 2008-06-30
Hi,
When SP_who2 is run,can it get the data from two weeks back or how is the time period determined?
is there a way to control the reult set time period? what does status RUNNABLE and Commands-- TASK Manger,AWAITING COMMAND,CHECKPOINT SLEEP mean?
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Question by:crishna1
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by:crishna1
ID: 21798356
Alos, by running sp_who or sp_who2 has a chance of corrupting the database , is that true?
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by:crishna1
ID: 21798497
i found the answers for various stages in status i asked in my question, now i need to know,
1)When SP_who2 is run,can it get the data from two weeks back or how is the time period determined?
2)by running sp_who or sp_who2 these is a chance of corrupting the database , is that true??
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Expert Comment

by:Vitor Montalvão
ID: 21801849
Answer for your questions:
1) Those SP's gives you a snapshot of the moment you execute them. It's always about the present so you can't have data from a determined period.
2) False. Those SP's wouldn't corrupte databases. No chances at all for that.
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by:crishna1
ID: 21804263
on question #1
how far back does it go and how is the time period based on or determined?  when i execute SP_WHO2 on one of my servers i see login/SPID's from 4-5 months back.
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Accepted Solution

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Vitor Montalvão earned 750 total points
ID: 21813298
The limit it's the last time SQL Server service was restarted.
It will show you the current connections. If you have SPID's from 4-5 months ago, that means they was never disconnected. Maybe those are system processes (usually low process number).
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