delayed update on sql logging

[Oguzhan Kayhan]

Hi,
I am checking simultaneous-use information, logged users etc on sql server.
The problem is, if a user logges in, nearly after a minute later i can see
the logged on user on mysql tables. But i can see the same user with
radlast command in the same second the user logs in.
So it seems like there is a delay between updating the data on sql.
And with this, user can log in mutliple times with same username even i
set sim-use to 1.

Is there any parameter for that???
Or what else can cause that problem.