java.lang.IllegalStateException: unable to start connection creation task and oracle.ucp.UniversalConnectionPoolException Exception While Enabling Failover With Remote ONS Subscription (Doc ID 2286734.1)

Last updated on MARCH 14, 2023

Applies to:

Symptoms

When attempting to use the new jar files (ojdbc8.jar, ucp.jar and ons.jar) from 12.2.0.1.0 in an application using Universal Connection Pool (UCP) and remote ONS subscription, oracle.ucp.UniversalConnectionPoolException: Exception occurred while enabling failover with remote ONS subscription occurs at starting time.

All works fine using the next configuration:

ojdbc7-12.1.0.2.jar
ucp-12.1.0.2.jar
ons-12.1.0.2.jar

but fails using this one:

ojdbc8-12.2.0.1.jar
ucp-12.2.0.1.jar
ons-12.2.0.1.jar


The standalone java application has the next UCP configuration:

    init-method="init" destroy-method="destroy">

Cause

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