This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I've inherited a large JBoss codebase that is, somewhere, not closing it's DB connections. I'm seeing errors like:
org.jboss.util.NestedSQLException: No ManagedConnections available within configured blocking timeout ( 30000 [ms] ); - nested throwable: (javax.resource.ResourceException: No ManagedConnections available within configured blocking timeout ( 30000 [ms] )) Exception caught while getting connection to java:/H2ST: No ManagedConnections available within configured blocking timeout ( 30000 [ms] ); - nested throwable: (javax.resource.ResourceException: No ManagedConnections available within configured blocking timeout ( 30000 [ms] ))
I don't believe our load is sufficent to be causing these, it must be unclosed connections somewhere. Does anyone know a good way to track down such connections? Unfortunately, the database code is scattered around the codebase, and it is proving difficult to manually check.
We are using a javax.sql.Datasource as our connection factory, is it possible to query this about the open connections? Or, does anyone have any good methods or tools for tracking down open connections?
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