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JDO Doc
4

javax.jdo.Transaction

javax.jdo Interface Transaction The JDO Transaction interface provides for initiation and completion of transactions under user control. It is a sub-interface of the PersistenceManager that deals with options and transaction demarcation. Transaction options include whether optimistic concurrency
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3

Failed to generate dynamic type objectdb.java.util.ArrayList

) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown
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3

Glassfish 3.1.2.1 and ObjectDB 2.4.3

.Parser$3.call(Parser.java:296) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run
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3

Adding EntityListener Throws Unexpected Internal Exception

$get$1.apply(ApplicationProvider.scala:105) at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) at scala.concurrent.forkjoin.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java
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3

Where Does ObjectDB Block/Lock?

blocking/locking so I might adapt to achieve better concurrency. 1) Where are locks when accessing ... optimistic=true to get more concurrency?   All relevant PersistenceManager / Transaction methods ... against the same database concurrently (not in a queue) you will need multiple PersistenceManager
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3

JBoss 7 startup fails

(ServiceControllerImpl.java:2291) 13:49:37,714 ERROR [stderr] (MSC service thread 1-3) at java.util.concurrent ... thread 1-3) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 13 ... .ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291) at java.util.concurrent.ThreadPoolExecutor
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3

Apache Tomee 1.5.2: Failed to use JTA (TransactionManager is not found)

(HostConfig.java:1637) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker
Issue
3

Exception occurs on Linux during commit

.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1301) at java.util.concurrent.Semaphore.acquire(Semaphore.java:317) at com ... ) at com.golocal.MiningTask.run(MiningTask.java:65) at java.util.concurrent
Issue
3

Named Query Exception

(ParentRunner.java:231) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask
Issue
3

NullPointer when accessing entity field

is manipulated concurrently in another thread (e.g. transaction is committed or the EntityManager ... concurrently by more than one thread? We are using EntityManagers in following way: for single read/write ... EM   So I think there is now concurrent access on one EntityManager. In single operations we just