[
https://issues.apache.org/jira/browse/DBCP-156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mark Thomas updated DBCP-156:
-----------------------------
Fix Version/s: (was: 1.3)
2.0
Commons-pool does not record the creation time of objects. Adding this would be
non-trivial as currently pool does not keep tabs on all the objects it creates.
It tracks idle objects but only keeps a count of active objects. Implementing
this would require changing pool to keep tabs on all objects.
I'm tempted to close this as won't fix. The underlying premise - that long
lived database connections are bad - doesn't seem right. I agree long lived
idle connections are bad and DBCP has ways to handle those. I don't see what is
inherently wrong with long lived active connections.
Pushing this to 2.0 as if this is implemented, I don't see it happening any
earlier due to the extent of the changes required to pool.
> [dbcp] Specifying the maximum lifetime of a connection
> ------------------------------------------------------
>
> Key: DBCP-156
> URL: https://issues.apache.org/jira/browse/DBCP-156
> Project: Commons Dbcp
> Issue Type: Improvement
> Affects Versions: 1.1
> Environment: Operating System: All
> Platform: All
> Reporter: Juergen Hoeller
> Priority: Minor
> Fix For: 2.0
>
>
> It would be excellent if BasicDataSource had a "maxLifetime" property, for
> specifying the maximum lifetime of a connection in the pool, no matter how
> long
> it's been active or idle, and no matter whether it still seems to be alive.
> Commons DBCP does not support this yet; it just offers various connection
> validation means, which is not the same.
> This is particularly relevant for MySQL Connector/J 3.0.x which tries to
> apply
> some weird automatic recovery when a MySQL connection has timed out,
> resulting
> in all sorts of issues. The best way to deal with this is to set the maximum
> lifetime of a connection to 4 hours or the like: If it's older, simply kill
> it,
> even if it's still alive at that point of time.
> Note that Proxool (http://proxool.sourceforge.net) does have such a property,
> namely "maximum-connection-lifetime". Resin's connection pool has a similar
> property named "max-pool-time" (http://www.caucho.com/resin-2.1/ref/db-
> config.xtp). I tend to prefer Commons DBCP, but the lack of such a property
> forces me to look for alternative pools.
> Juergen
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
