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 JUNE 05, 2023
Applies to:
JDBC - Version 21.5 to 21.6 [Release 21]Universal Connection Pool - Version 21.5 to 21.6 [Release 21]
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 connected 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.
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |