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 188.8.131.52 and later
Information in this document applies to any platform.
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.
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