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Warning "cleanup HHH000100 : Fail-safe cleanup (collections)" keep being repeated in logs


When checking the logs I noticed that is being flooded with the following warning:

WARN [http-nio-8080-exec-3241] [engine.loading.internal.LoadContexts] 
cleanup HHH000100: Fail-safe cleanup (collections) :
com.mchange.v2.c3p0.impl.NewProxyResultSet@1acbdbba [wrapping: null]>

I tried to find something in the web that could help me tackle the problem but no relevant information came up.

Do you know what may be the cause for such error and what can we do to prevent it from keep polluting the log?

Thanks a lot.

1 answer

Hi Ultron,

That is a tough one. I wanted to say it smells like a plugin has a bug, but I don't have anything solid on that (or any front).

I would start by updating all plugins, possibly upgrading to 7.4 (LTS) as part of it, and seeing if the error continues.

If it continues, I would start looking at the tomcat config, JDBC driver, and all of that stuff the application technically lives inside of. This is because of the {{hibernate}} and {{c3p0}} mentions in the snippet.

After that, I would turn to Atlassian support, look to increase logging, and etc.


Hi @Joshua Sneed _ Contegix ,

I know it's a hard bone to chew, this one, but your feedback is already useful.

Thanks a lot. :)

Like Joshua Sneed _ Contegix likes this

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