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13

Pessimistic lock

: javax.jdo.option.Optimistic=false javax.jdo.option.NontransactionalRead=true javax.jdo.option ... Now we use the following options in DB2: javax.jdo.option.Optimistic=true javax.jdo.option ... =true javax.jdo.option.RestoreValues=false The DB2 returns the message "Optimistic lock failed
10

Failed to commit transaction: Attempt to commit a rollback only transaction

Moshal note: optimistic locking is off dmoshal David Moshal update 1: problem persists if optimistic
7

Replication error on slave restart

: Optimistic lock failed (see multiple nested exceptions) at com.objectdb.o.MSG.d(MSG.java:61
7

Transaction isolation support?

of that specific object using the first EntityManager, due the default optimistic locking (unless
7

ObjectDB version 2.1 has been released

the download). Added support of disabling optimistic locking exceptions. Added support of url
7

Updating Entities

._OptimisticLockException: Optimistic lock failed for object application.model.Paygrade#184 (object has version 86 instead
2

Error during closing an entity manager

and with this one we get an optimistic lock exception without enhancement. If we enhance all entities then the issue does ... changed the exception from the one in #3 above to an optimistic lock exception. More information ... be your priority now. support Support We have found the reason of the optimistic lock exception and we fixed
2

Query in nested transaction returns detached entity if lazy-loaded

= 1) and committed, during the commit an optimistic lock exception is thrown. The version flag ... to commit transaction: Optimistic lock failed for object com.btc.ep.base.bl.internal.entities.mapping ... .java:311) ... 45 more Caused by: com.objectdb.o._OptimisticLockException: Optimistic lock failed
1

ObjectDB 2.6.5

specified in configuration. Fixed optimistic lock exception on removing of a flushed modified
1

Entity Version History

ObjectDB manages automatic entity versioning (for optimistic lock purposes). Every entity object modification is reflected by a new version number. Naturally, previous values in the entity object that are overridden by new values are discarded. Some applications may benefit from the ability

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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