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Editorial Team
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Asked: 2026-06-08T17:29:48+00:00

I get the following error message when trying to connect a web app running

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I get the following error message when trying to connect a web app running on EAP6 to MySQL in OpenShift.

javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Communications link failure

How do I fix this?

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1 Answer

  1. Editorial Team

    The same issue was discussed at https://community.jboss.org/thread/202318.

    The solution is to append “?autoReconnect=true” to the connection URL. You do this in the standalone.xml file, found in the .openshift/config folder in your OpenShift Maven project.

    EDIT

    This is actually a known bug: https://community.jboss.org/thread/177144. Validating the connection can be used as a workaround.

    <validation>
 <check-valid-connection-sql>SELECT 1</check-valid-connection-sql>
</validation>
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