About pessimistic

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JPA Doc
6

javax.persistence.LockTimeoutException

: Serializable Thrown by the persistence provider when an pessimistic locking conflict occurs that does
JPA Doc
6

PessimisticLockScope.NORMAL

Enum Constant javax.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 strategy
JPA Doc
6

javax.persistence.EntityNotFoundException

with pessimistic locking is used and the entity no longer exists in the database. The current transaction
JPA Doc
6

javax.persistence.PessimisticLockException

Interfaces: Serializable Thrown by the persistence provider when an pessimistic locking conflict occurs
Forum
4

Pessimestic Locking doesn't release when application unexpectedly terminates.

) is to use pessimistic locking with expiration time. For example, if you know that transactions ... is broken. Hi Since I want to use Pessimistic Lock as a way of enforcing a cluster wide singleton of services, a pessimistic lock will potentially last forever or until the particular service goes
Forum
3

OptimisticLockException

. Also have the Explorer open Questions: a) what is it about? b) is there a setting for pessimistic mode? In my app, I ... a pessimistically locked entity (global tracking id generator, specific to internal requirement) - and got ... Optimistic lock error on pessimistically tracked entity.   Modified conf file, and got the test case
Forum
3

"Attempt to lock a non entity object" error

(),       LockModeType.PESSIMISTIC_WRITE); . . } //doEdit ... );         em.lock(p, LockModeType.PESSIMISTIC_WRITE);         System.out.println("After find ... ();         // next line throws IllegalArgumentException         em.lock(p, LockModeType.PESSIMISTIC
Forum
3

Database Inconsistency or corruption

. ObjectValue ID:=100, TYPE:=Person, REVISION:=0, isPersisted:=true, LockMode:=PESSIMISTIC_WRITE ... :=100, TYPE:=Person, REVISION:=2, isPersisted:=true, LockMode:=PESSIMISTIC_WRITE]] ... Attribute  ID
Forum
3

How to do multithreading with embedded ObjectDB

/ JPA locking, by setting a pessimistic locking timeout, e.g. by: MapPESSIMISTIC_WRITE);         point.setX(point.getX() + 1);   johnvu
Forum
3

javax.persistence.LockTimeoutException

Is it possible to change a LockTimeout for pessimistic lock? 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.   glaz