Troubleshooting Database Deadlocks
The JBoss application server logs the following error when the database reports a deadlock—a condition in which the database operation cannot continue because two processes are both waiting for the other process to be completed before they proceed.
java.sql.SQLException: General error, message from server: "Deadlock found when trying to get lock; Try restarting transactionDeadlocks can occur for a variety of reasons in normal database operation. The VTA resolves deadlocks in the database, and you should ignore this message.