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Memory Leak on “oracle.ucp.common.waitfreepool.LinkedListPool$Element” When Using JDBC 21.5 Drivers Against A 19c Database (Doc ID 2859206.1)

Last updated on APRIL 04, 2022

Applies to:

JDBC - Version 21.3 and later
Information in this document applies to any platform.

Symptoms

Tomcat application using Oracle JDBC driver version 21.5 reports an 'OutOfMemoryError: GC overhead limit exceeded' when connnected to a 19c database.
The memory leak eventually crashes the web application in an hour period.

Increasing the memory does not prevent the issue from happening.
The application worked successfully with ojdbc7 during regular performance tests.


Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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