Database hangs, deadlock detection

Hello,
I'm using MaxDb 7.6.0.12 on Linux Suse ES 9.

My database hangs during normal working.
I don't know what is DB exactly doing (what SQL statement is running).
I cannot connect to DB (SQL Studio, DbmGUI), so it seams that xserver is  
waiting for something.
How can I found out what is database doing at the moment?

I have had some problems with deadlocks on my DB before.
But DB behavior was different, because when deadlock occurs I can connect  
to database (SQL Studio and DbmGUI)
and see not locked tables. I cannot find some detailed information how  
does deadlock detection works in MaxDb.
There is DEADLOCK_DETECTION in extended DB parameters, but what does  
"search level" means ?
I have default setting (DEADLOCK_DETECTION = 4) and DB was not able to  
detect very simple deadlock
(onle 2 tables and 2 processes was blocked each other).
How should I set it properly?

Thank you for support
   Dusan

-- 
Dusan Kolesar
Helsinska 19
040 13  Kosice
Slovakia
e-mail primary : [email protected]
e-mail alternative : [email protected]
ICQ# : 160507424

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