Please I really need help ASAP. I wrote a server-side application that powers a website and multiple mobile clients. I used Hibernate for data access. I later discovered that the app fails after a day! When I checked around online, I found out that its a well know issue with MySQL terminating a "stale" connection after 8 hours. In order to avoid this, I found many suggestions like including ?autoReconnect=true
, using c3P0, etc.
is officially discouraged (especially in production environment) and also because it didn't have any effect when I applied it, I decided to go for c3p0. Unfortunately, after introducing the c3p0 configuration in my
file, the application starts throwing a NullPointerException
somewhere in my code where I called dbSession.close();
This means that the HibernateUtil.getSessionFactory()
actually returns null
. I have added the required jars (c3p0-0.9.2-pre2.jar, hibernate-core-3.3.1.GA.jar, hibernate-c3p0-3.3.2.GA.jar, mchange-commons-java-0.2.1.jar and c3p0-oracle-thin-extras-0.9.2-pre2.jar) even though I don't think its all of them that are required.
Please kindly help me with a "beginner-friendly" easy-to-implement, step-by-step procedure for setting up c3p0 with Hibernate. I'm using Hibernate 3.3.6 on JDK 1.6, MySQL 5.5 and I'm developing in Netbeans 7.0.
Here is my hibernate.cfg.xml
Thanks a lot!