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JPA 2 supports both optimistic locking and pessimistic locking . Locking is essential to avoid ... to pessimistic locking it is easier to use and more efficient. In the rare cases in which update collision must be revealed earlier (before transaction commit) pessimistic locking can be used. When using

adds support for pessimistic locking . The setLockMode method sets a lock mode that has to be applied ... a pessimistic WRITE lock on all the result objects:   List results = query. setLockMode ( LockModeType . PESSIMISTIC _WRITE ) . getResultList (); Notice that when a query is executed

index) - and my test case is failing here. The issue is that once the pessimistic lock is in place ... on stale updates. Willks William Support of  pessimistic lock timeout setting ( javax.persistence ... .ProductCodeTracking:1 I have to stress, that the pessimistically locked entity has a transaction

It appears that EntityTransaction.commit() does not release a pessimistic lock - test code ... .getTransaction().begin(); Account a1 = em1.find(Account.class, 0, LockModeType. PESSIMISTIC _WRITE); a1.credit(10); em1.getTransaction().commit(); System.out.println(em1.getLockMode(a1)); // - PESSIMISTIC

we are protecting object access via pessimistic lock of objects. in a multi thread environment ... The following example shows how pessimistic locking should work in ObjectDB (and JPA): public class F2992 ... . PESSIMISTIC _WRITE); System.out.println("Thread A: got lock, updating..."); e.setName("by A"); Thread

JPA Enum Constant in jakarta.persistence.LockModeType PESSIMISTIC _FORCE_INCREMENT Pessimistic write lock, with version update. Since: JPA 2.0

JPA Enum Constant in jakarta.persistence.LockModeType PESSIMISTIC _WRITE Pessimistic write lock. Since: JPA 2.0

JPA Enum Constant in jakarta.persistence.LockModeType PESSIMISTIC _READ Pessimistic read lock. Since: JPA 2.0

Pessimistic lock

an optimistic or pessimistic lock on an entity instance. The full range of possible lock types is enumerated ... is pessimistic and the entity has a version attribute, the persistence provider must perform ... , the OptimisticLockException is thrown. If the lock mode type is pessimistic and the entity instance is found

pessimistic lock which may be obtained on an entity instance. A specific lock mode may be requested by ... the PersistenceException . The lock modes LockModeType. PESSIMISTIC _READ , LockModeType. PESSIMISTIC _WRITE , and LockModeType. PESSIMISTIC _FORCE_INCREMENT are used to immediately obtain long-term database locks

- since someone can change the object just after the refresh . In that case - use pessimistic locks. support ... - since someone can change the object just after the refresh. In that case - use pessimistic locks ... , so that doesn't help me. Pessimistic locks might not help either, given #3 above, ie: it seems like

I've attached a simple test which creates an object then kicks off several threads which each try to update the object. I'm using a pessimistic lock with timeout as follows: Map properties = new ... .class, 1, LockModeType. PESSIMISTIC _WRITE, properties); One thread manages to do its update

context has not been joined to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails ... been joined to the transaction PessimisticLockException - if pessimistic locking fails and the transaction

PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled back PersistenceException - if the query ... context has not been joined to the transaction PessimisticLockException - if pessimistic locking fails

pessimistic locking only? I've tried various xml configurations, and also various transaction ... , that setting is for optimistic locking. My question was about pessimistic locking (specifically, pessimistic write locking). Your documentation seems unclear about that.   dmoshal David Moshal

the specified plain. If a pessimistic lock mode type is specified and the entity contains a version attribute ... . If these checks fail, the OptimisticLockException is thrown. If the lock mode type is pessimistic ... - if the entity does not exist in the database when pessimistic locking is performed

properties. If a pessimistic lock mode type is specified and the entity contains a version attribute ... . If these checks fail, the OptimisticLockException is thrown. If the lock mode type is pessimistic ... EntityNotFoundException - if the entity does not exist in the database when pessimistic locking

context, obtaining the specified plain. If a pessimistic lock mode type is specified and the entity ... . If the lock mode type is pessimistic and the entity instance is found but cannot be locked ... EntityNotFoundException - if the entity does not exist in the database when pessimistic locking

is pessimistic and the entity has a version attribute, the persistence provider must perform optimistic ... is thrown. If the lock mode type is pessimistic and the entity instance is found ... check fails PessimisticLockException - if pessimistic locking fails and the transaction is rolled

there. If the entity is found within the persistence context and the lock mode type is pessimistic and the entity ... mode type is pessimistic and the entity instance is found but cannot be locked ... version check fails PessimisticLockException - if pessimistic locking fails and the transaction is rolled

within the persistence context and the lock mode type is pessimistic and the entity has a version attribute ... . If these checks fail, the OptimisticLockException is thrown. If the lock mode type is pessimistic ... PessimisticLockException - if pessimistic locking fails and the transaction is rolled

there. If the entity is found within the persistence context and the lock mode type is pessimistic ... . If the lock mode type is pessimistic and the entity instance is found but cannot be locked ... - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic

; support Support A possible solution (which is currently not implemented) is to use pessimistic locking ... want to use Pessimistic Lock as a way of enforcing a cluster wide singleton of services, a pessimistic ... adds automatic release of pessimistic locks on client-server disconnection. The locks

. If the lock mode type is pessimistic and the entity instance is found but cannot be locked ... - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic

is pessimistic and the entity instance is found but cannot be locked: the PessimisticLockException is thrown ... PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled back PersistenceException - if an unsupported lock call is made Since: JPA 2.0

. If the lock mode type is pessimistic and the entity instance is found but cannot be locked ... PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled back PersistenceException - if an unsupported lock call is made Since: JPA 2.0

.getSelectedValue(),       LockModeType. PESSIMISTIC _WRITE); . . } //doEdit ... , LockModeType. PESSIMISTIC _WRITE);         System.out.println ... ;      em.lock(p, LockModeType. PESSIMISTIC _WRITE);     

. Also have the Explorer open Questions: a) what is it about? b) is there a setting for pessimistic mode? In my app ... guess I should read doco more. I ran into the same error from a pessimistically locked entity (global ... on pessimistically tracked entity.   Modified conf file, and got the test case working perfectly.  

the values of the jakarta.persistence.lock.scope property for pessimistic locking. This property ... .0 NORMAL This value defines the default behavior for pessimistic locking. The persistence provider

to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled

the persistence context has not been joined to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails

to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled

- if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking

context has not been joined to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails

PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled back PersistenceException

PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails and only the statement is rolled back PersistenceException

context has not been joined to the transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking fails

- if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking

. ObjectValue ID:=100, TYPE:=Person, REVISION:=0, isPersisted:=true, LockMode:= PESSIMISTIC _WRITE ... . ObjectValue ID:=100, TYPE:=Person, REVISION:=2, isPersisted:=true, LockMode:= PESSIMISTIC _WRITE

Is it possible to change a LockTimeout for  pessimistic  lock? glaz Alexandr Kurucin Currently ObjectDB throws a LockTimeoutException immediately when a pessimistic lock cannot be granted. Future versions will support timeout setting. You may fill a feature request to increase the priority of this feature.   support Support

JPA Enum Constant in jakarta.persistence.PessimisticLockScope NORMAL This value defines the default behavior for pessimistic locking. The persistence provider must lock the database row(s) that correspond to the non-collection-valued persistent state of that instance. If a joined inheritance

when EntityManager.lock is used with pessimistic locking is used and the entity no longer exists in

JPA Exception LockTimeoutException java.lang.Object ∟  java.lang.Throwable ∟  java.lang.Exception ∟  java.lang.RuntimeException ∟  jakarta.persistence.PersistenceException ∟  jakarta.persistence.LockTimeoutException Thrown by the persistence provider when a pessimistic

when a pessimistic locking conflict occurs. This exception may be thrown as part of an API call, a flush or

. Since: JPA 3.2 JDBC_USER Username for JDBC authentication. Since: JPA 3.2 LOCK_TIMEOUT Default pessimistic

JPA Static Field in jakarta.persistence.PersistenceConfiguration LOCK_TIMEOUT Default pessimistic lock timeout hint. Since: JPA 3.2

Added support of JPA UPDATE and DELETE queries ( issue #12 ). Added support of pessimistic lock timeout ( javax.persistence.lock.timeout ). Added implementation of the getParameters method. Added exception on pessimistic locking retrieval with no active transaction. Improved support of entity

Added JPA XML validation schema files to Maven/JEE objectdb.jar. Added automatic release of pessimistic locks on client-server connection failure. Fixed an OptimisticLockException bug on commit after flushing a removed modified entity object. Fixed a  NullPointerExeption on new index building

O'Hare It seems as a separate issue. Maybe related to pessimistic locking. Can you provide a test