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problem in database connection

 
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I am using mysql and hibernate. While running my application, if there is an error or exception thrown, the connection with the database is lost and the connection is not restored until I restart the tomcat. Can somebody please tell me why it happens and how to overcome this problem.

Thanks.
 
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Moving to the Object Relational Mapping Forum
 
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Why do you think the database connection is lost? What exception is thrown if you try to execute a select statement?
 
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