title: HikariCP connection leak detection and hibernate
body: <p>Is it possible to enable leak detection in version 2.3.9? As I previously said in this <a href="https://stackoverflow.com/questions/32555098/hikaricp-debug-output-is-this-normal">question</a> Hibernate was using version 2.3.3 of HikariCP. As of February 2016, they have upgraded the version of HikariCP, but unfortunately to version 2.3.9</p>
  
  <p>I need to enable the detection of leaks in order to fix them. 
  I have added the following lines to hibernate configuration file:</p>
  
  <pre><code>&lt;property name="hibernate.hikari.maximumPoolSize"&gt;30&lt;/property&gt;
  &lt;property name="hibernate.hikari.idleTimeout"&gt;30000&lt;/property&gt;
  &lt;property name="hibernate.hikari.dataSource.leakDetectionThreshold"&gt;30000&lt;/property&gt;   
  </code></pre>
  
  <p>The first two lines work and can be seen in the debug log, but when I add the third one I can't run the application. 
  I have also tried to add this using code, but it still doesn't work. I get the following error:</p>
  
  <pre><code>HHH000130: Instantiating explicit connection provider: org.hibernate.hikaricp.internal.HikariCPConnectionProvider
  Initial SessionFactory creation failed.org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]Initial SessionFactory creation failed.Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
  </code></pre>