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Database connections; Killing & Limiting

Posted on 2004-03-26
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Last Modified: 2008-02-01
Two questions: (I will split the points between both answers)

In reference to Sybase 11

1. (How) Can I limit the number of connections a single user can have at one time?

2. (How)  Can I auto kill an inactive connection after X minutes?

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Question by:htarlow
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ahoor earned 500 total points
ID: 10691930
About question 1.... you can do this only in an application. If your application checks whether the user is connected the end with an errormessage. Or you should run a procedure every given time to check for double user id's logged in and kill one, but then you don't know which to kill and there is a limited time a user can have 2 connections.

Question 2.... again something for your application, fill a logtable with user id and login time, and delete this row after diconnecting. Then run a procedure every given time to kill any process present in the logtable and active for a longer time then allowed.

I wonder why you would want to do any of this... well the first maybe, but that's easy to build in any application.

You have to ensure unique login-name for every user though to find them in the sysprocesses table.

Arjan
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by:bret
ID: 10705101
Another thing you can do is upgrade to ASE 12.5.x.   Then you can take advantage of login triggers (to control the number of connections any one login has) and use the sp_idlereaper stored procedure (based on the MDA tables) to handle idle processes.
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