Oracle UCP Throws "Connection Borrowing Returned Null" Exceptions (Doc ID 1632130.1)

Last updated on AUGUST 03, 2016

Applies to:

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

Goal

Using Oracle's Universal Connection Pool and getting the following kind of exceptions:

java.sql.SQLException: Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: Connection borrowing returned null
  at oracle.ucp.util.UCPErrorHandler.throwSQLException(UCPErrorHandler.java:163)
  at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:928)
  at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:863)
  at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:855)


What could be the cause for this?
 

Solution

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