"Unable to get managed connection Errors" from JBOSS Application
(Doc ID 2294601.1)
Last updated on JUNE 09, 2022
Applies to:JDBC - Version 126.96.36.199.0 and later
Information in this document applies to any platform.
JBOSS application reports "unable to open connection to the database" error messages. Below is a timeline of the events :
1. All systems were green
2. Application threads backed-up and the application rapidly started spawning connections to the database.
3. After reaching a max threshold of connections in the pool, the following errors are seen:
Caused by: org.hibernate.exception.GenericJDBCException: Could not open connection
Caused by: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/<DATASOURCE NAME>
Caused by: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/<DATASOURCE NAME>
Caused by: javax.resource.ResourceException: IJ000655: No managed connections available within configured blocking timeout (30000 [ms])
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