![]() Since, both threads are waiting for each other to release the lock, the condition is. Deadlock can occur in a situation when a thread is waiting for an object lock, that is acquired by another thread and second thread is waiting for an object lock that is acquired by first thread. A Java multithreaded program may suffer from the deadlock condition because the synchronized keyword causes the executing thread to block while waiting for the lock, or monitor, associated with the specified object. Deadlock in Java is a part of multithreading. ![]() While one thread reads from the other database, the second thread writes to the MySQL database. If you want to use threads to speed things up, I'd suggest using only two threads. Here are some DBMS specific statements to set a lock timeout of 3 seconds: MySQL. To set a proper lock timeout you have to execute some custom native SQL statement for each DBMS provider. I'd guess that the database is the limiting factor, so adding threads in your application doesn't help. Unfortunately, property is supported only by oracle provider in spring data jpa. It is very flexible and provides more options in comparison to the Synchronized block. This appears to be a timeout on the database side. ![]() In simple terms, one session acquires and holds a lock on a specific resource for its processing and a second session attempts to acquire a lock that causes contention on the same resource and this causes blocking. ![]() After some time, a new locking mechanism was introduced. Blocking is a normal characteristic of a relational database engine and SQL Server blocking happens for lock-based concurrency. Java lock acts as thread synchronization mechanisms that are similar to the synchronized blocks. Deadlock occurs when multiple threads need the same locks but obtain them in different order. In Java, Lock is an interface available in the package. Deadlock describes a situation where two or more threads are blocked forever, waiting for each other. ![]()
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