Failed to setAutoCommit after WebLogic 12.2.1.3 upgrade

Hello,

I trust you're well.

Following an upgrade from WL 12.2.1.0 to 12.2.1.3 we start to face the below error. The error is raised 400+ every 30 minutes.

We have followed the steps to set the "Test Connections On Reserve" on.

java.sql.SQLException: Failed to setAutoCommit to true for pool connection: First we got Connection not established, then we got Connection not established

        at weblogic.jdbc.wrapper.PoolConnection.init(PoolConnection.java:68)

        at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:234)

        at weblogic.jdbc.pool.Driver.connect(Driver.java:157)

        at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:665)

        at weblogic.jdbc.jts.Driver.connect(Driver.java:129)