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All Connections In The Universal Connection Pool Are In Use (Doc ID 1592840.1)

Last updated on DECEMBER 06, 2017

Applies to:

Oracle Database Cloud Service - S50 - Version N/A to N/A [Release 1.0]
Oracle REST Data Services - Version 2.0.0 and later
Information in this document applies to any platform.


Using Oracle REST Data Services - ORDS (aka Apex Listener) 2.0.X, when attempting to connect to APEX applications the following error occurs:

HTTP-500 error

In ords.log the following message appears:

Could not get connection from pool:apex error: Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: All connections in the Universal Connection Pool are in use

The issue can be reproduced at will with the following steps:
1. Configure ORDS 2.0 to access apex
2. Call the the Apex URL in a Browser


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