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From "Thad West (JIRA)" <>
Subject [jira] Commented: (GERONIMO-4222) Database pool unusable after database unavailable for awhile
Date Wed, 30 Jul 2008 15:57:31 GMT


Thad West commented on GERONIMO-4222:

We are running Geronimo 2.0.2 connecting to MySQL v5

The default for MySQL is to close a connection after 8 hours of inactivity (overnight for
us).  Here are the details:

For testing purposes, you could change the time limit by setting the wait_timeout variable
when you start mysql.

So...MySQL invalidates the connection, but Geronimo keeps it in the pool.  As soon as you
get one of these connections and try to use it, kablammo!

> Database pool unusable after database unavailable for awhile
> ------------------------------------------------------------
>                 Key: GERONIMO-4222
>                 URL:
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.0.2
>         Environment: Red Hat Enterprise Linux Server v5.2
> WAS-CE v2.0.0.1, based on Geronimo v2.0.2
>            Reporter: David Frahm
> I have frequent trouble with my database pool to an AS/400.  The database is taken down
every night for backup, and at least once a week the connection pool is unusable after the
database comes back up.  Restarting the connection pool makes everything work again. 
> We are new to Geronimo/WAS-CE -- just this one app on one server -- so I don't have anything
to compare to.  However, we have had this same issue with a couple 1.x/1.1.x versions before
we upgraded to v2.  Also, there are several WebSphere (full WAS, not WAS-CE) apps that do
not have this trouble.
> Configuration Info
> Driver: JTOpen v6.1 (
> Pool Min Size: 0
> Pool Max Size: 100
> Blocking Timeout: 5000
> Idle Timeout: 15

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