Hi guys,
I have inherited an application from a team that doesn't exist anymore. The system is
in production with HSQLDB (argh!) as the persistence engine of 2 queues, one for incoming
messages, the other for outgoing messages. From time to time the application get
"stuck": messages are accumulating into the queues and dequeuers are not waken
up until we restart the app server entirely.
Can this be related to HSQLDB? Would it help to migrate to MySQL (which we intend to do
anyway)?
A thread dump when the problem occurs shows the listeners waiting on the queues, so
it's not clear to me if this can be related to the underlying persistence engine.
In order to try to mitigate the problem, we have increased the amount of concurrent
listeners on every queue from 3 to 10: I wonder whether this can really make things better
or worse. It's also worth noting that if I check the receivers when the problem
happens, though, I see that the total number is 0 (while normally it is 10, after last
change).
We are currently using JBoss 4.0.5.GA in a non clustered environment.
Any hint would be extremely appreciated.
TIA
MM
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4148199#...
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...