My Oracle Support Banner

UCP XA Connections to Sharded Database Fail With "Closed Connection" (Doc ID 2763738.1)

Last updated on APRIL 01, 2021

Applies to:

Universal Connection Pool - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

When using version 12c through 19c of the UCP and the JDBC driver, connecting to a sharded database, a multithreaded Java XA intermittently fails with the following error:


Debugging suggests that the occurrence of this problem correlates to the UCP pool returning a connection that is already in use by another thread.

Changes

 

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.