With Thousands of Connections Segmentation Fault With No Message In the MySQL Error Log

(Doc ID 2189580.1)

Last updated on MARCH 08, 2017

Applies to:

MySQL Cluster - Version 7.3 to 7.4 [Release 7.3 to 7.4]
MySQL Server - Version 5.6 to 5.6 [Release 5.6]
Information in this document applies to any platform.


MySQL crashes, but there is no crash information in the error log. If MySQL is started using mysqld_safe there will be information like:


The issue only occurs with thousands of connections (usually 8000 or more).


The issue may start after enabling the Performance Schema.


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