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Using Hibernate 4.3.1, Hikari 2.3.2.
I have configured this in the hibernate persistence xml
...
<property name="hibernate.hikari.leakDetectionThreshold" value="3000" />
<property name="hibernate.hikari.poolName" value="KikariTest" />
<property name="hibernate.hikari.registerMbeans" value="true" />
And this in my log4j.properties
log4j.logger.com.zaxxer.hikari=DEBUG
log4j.additivity.com.zaxxer.hikari=false
Im not seeing any logging information printed. Any ideas?
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You can open MYSQL console and query by typing this query. as an example, I have added 10 connections for the pool. the username of the connection is mafei_connection_test . then you can see the all connection that the MySQL server created and currently opening.
From Hikari documentation: "This property controls the amount of time that a connection can be out of the pool before a message is logged indicating a possible connection leak. A value of 0 means leak detection is disabled. Lowest acceptable value for enabling leak detection is 2000 (2 seconds).
Overview. Hikari is a JDBC DataSource implementation that provides a connection pooling mechanism. Compared to other implementations, it promises to be lightweight and better performing.
It took me a whole day to get this right! Turns out I was using log4j libs only, whereas a needed to include the slf4j libs.
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