httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeff Trawick <>
Subject Re: [users@httpd] Interesting error while using 2.2.11 on Solaris 9
Date Mon, 14 Dec 2009 23:08:14 GMT
On Mon, Dec 14, 2009 at 5:33 PM, Tony Anecito <> wrote:
> Hi All,
> Has anyone ever seen this error before while using Apache on Solaris say in the last
year? If so what was the fix?
> Deadlock situation detected/avoided: ap_proxy: couldn't create the lock

Isn't that message from the WebLogic plug-in?  Ask them?

Are you running the worker MPM with multiple listening sockets?  If so:

It might get better if you change the lock mechanism used by the
accept mutex.  Try "AcceptMutex sysvsem" or "AcceptMutex pthread".

The former may require sysdef to increase the number of semaphore undo
structures available :(
If httpd child processes are crashing, the latter may result in a web
server hang :( (I doubt it, though)

The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:> for more info.
To unsubscribe, e-mail:
   "   from the digest:
For additional commands, e-mail:

View raw message