Deadlock problem

[Gabriela Chiribau <gabriela@xxxxxxxxxxxxxxxxxxxx>]

Greetings,

I used to get 
"com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@cdc368 
-- APPARENT DEADLOCK!!! Creating emergency threads for unassigned 
pending tasks!" within 24 hours after starting the server, which implied 
a daily server reboot.

It looks like the problem lies with c3p0 connection pool package 
(http://jira.codehaus.org/browse/XPR-153).

I did upgrade to 0.9.0.2 and the problem didn't occur for 4 days. (As 
the availability increased, I got a OutOfMemoryError, but that can be 
solved at this point with a -Xmx :) )
I didn't notice any adverse problems as users connected to the server 
and I have used the ECM functionality.

To upgrade the c3p0 package, change the version number for c3p0 in 
projects/v2.x/exo-platform/services/database/impl/pom.xml and rebuild.

<dependency>
     <groupId>c3p0</groupId>
     <artifactId>c3p0</artifactId>
     <version>0.9.0.2</version>
     <scope>runtime</scope>
   </dependency>

In a production environment, replace exo-tomcat/common/lib/c3p0-8.x.jar 
with c3p0-0.9.0.2.jar and bounce tomcat.

I hope this helps,

Gabriela


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