Oracle Universal Pooling For JDBC Is Not Pooling The Connections Successfully (Doc ID 1612855.1)

Last updated on MARCH 08, 2017

Applies to:

Universal Connection Pool - Version 11.2.0.1.0 and later
Information in this document applies to any platform.

Symptoms

Application deployed on Weblogic is using UCP with a native Microsoft JDBC driver to connect to MSSQL server and getting: oracle.ucp.UniversalConnectionPoolException: Connection borrowing returned null

  



Changes

 The problem was initially thought to be UCP specific as other programs not using UCP has no problems connecting using the same JDBC driver. It turned however that the 2 environments were running using different versions of the JDK.

Cause

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