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 JULY 17, 2017

Applies to:

JDBC - Version 12.2.0.0.0 and later
Universal Connection Pool - Version 11.2.0.3.0 and later
Information in this document applies to any platform.

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">




Changes

 

Cause

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