RE: [Webware-devel] Blocking threads

[Geoffrey T. <gta...@na...>]

I know this isn't much help, but it seems to me that the problem has to be
in the Oracle adapters.  Some blocking API call must not be releasing the
global interpreter lock.

Is there any way you can attach to the process with the debugger and figure
out where it's wedged?

- Geoff

> -----Original Message-----
> From: Marcos [mailto:msa...@gr...]
> Sent: Monday, March 17, 2003 6:50 AM
> To: web...@li...
> Subject: [Webware-devel] Blocking threads
> 
> 
> We still get threads blocking each other when accessing 
> Oracle. We have
> tried cx_Oracle and DCOracle2. The symptom is as follows:
> 
> - Launch AppServer.
> - Launch WAPT load testing tool with 40 users.
> - Performance is poor, but acceptable.
> - The AppServer windows freezes.
> - We hit ^C. One of the threads says that Oracle has interrupted the
> command by user request (or sth). The other threads respond 
> immediately.
> 
> So, I think it is clear that the stopped thread was indeed blocking
> other threads. We are not using any locking mechanism in our code.
> 
> Where should I look?
> 
> 
> 
> 
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