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With Connector/J load balancing, Often Seeing: Com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications Link Failure (Doc ID 1526709.1)

Last updated on SEPTEMBER 06, 2023

Applies to:

MySQL Connectors - Version 5.1 and later
Information in this document applies to any platform.


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Using the Connector/J load balancing with a URL similar to this:


Have keep alive functionality enabled in connection pool and also enabled the functionality to check connection validity at checkout in our connection pool. That's why it's not expected. The X in the error above is also less than wait_timeout.


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