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Dirty checking

just drop the transaction? Don't I have to either rollback or commit it? Let's take a step ... at the end of any request. thoughts? dmoshal David Moshal OK. Rollback is fine, of course ... . Regarding rollback, the JPA state diagram seems to indicate that post commit entities

How to Use a SF with extended Persistence Context?

._TransactionRequiredException: Attempt to rollback a transaction when no transaction is active at com.objectdb.o.JPE.g(JPE ... .arjunacore.BaseTransaction.rollback(BaseTransaction.java:134) at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.rollback(BaseTransactionManagerDelegate.java:114) at org.jboss.as.ejb3.tx

New to Product & Having An Issue

(); if(em.getTransaction().isActive()) em.getTransaction().rollback ... ().rollback(); assertTrue(false); } } @After public void ... (); if(em.getTransaction().isActive()) em.getTransaction().rollback

Memory Leak in EntityManagerFactory ?

with no commit or rollback). Possibly, this behaviour is to avoid cleaning objects that are still in ... / rollback any active transaction before closing an EntityManager, which is a good practice ... ().rollback(); } ... if (manager.isOpen()) {                    // Condition B try { manager

Run out of memory

and store it back in the database to access / modify later. I require to be able to rollback changes ... onRollback() { this.em.getTransaction().rollback(); this.em.clear(); this.em.close();     System.err.println("Rollback Done"); } The general call of these functions are: onBegin

pesimistic Lock semantic

.currentTransaction().rollback(); System.out.println(Thread.currentThread().getName ... ()) pm1.currentTransaction().rollback(); pm1.close(); } if (pm2 != null) { if (pm2.currentTransaction().isActive()) pm2.currentTransaction().rollback(); pm2.close


transaction, if one is active, will be marked for rollback. Since: JPA 2.0 PessimisticLockException

objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'

.persistence.TransactionRequiredException Attempt to rollback a transaction when no transaction is active ... .persistence.TransactionRequiredException Attempt to rollback a transaction when no transaction ... .PersistenceException Attempt to rollback a transaction using a closed EntityManager (error 525) at com

Best practise loading big data

only. If it is a read only operation, do you really need commit? maybe you can use rollback or clear instead ... so we do not need to commit - commit is a NOOP. If it is faster to rollback or just to clear ... expect performance improvements with rollback / clear, although it makes more sense to use them and maybe

[ObjectDB 2.8.3_01] Unexpected exception (Error 990)

.persistence.RollbackException Failed to commit transaction: Attempt to commit a rollback ... .persistence.PersistenceException: com.objectdb.o.UserException: Attempt to commit a rollback ... : com.objectdb.o.UserException: Attempt to commit a rollback only transaction at com.objectdb.o.MSG

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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