About lock

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Forum
3

Setting temp directory location in ObjectDB

. This might be a side effect of the file locking method that is used by ObjectDB 1.x. Try running ObjectDB in a process ... permission permission is blocked for the parent folder, won't ObjectDB locking method throw exceptions ... . > And if write permission permission is blocked for the parent folder, won't ObjectDB locking method throw
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3

Some technical questions

Hi, ObjectDB looks interesting. Have two technical questions... (1) what locking model does ... you, Andrej (1) what locking model does ObjectDB use? I.e. 2PL or MVCC? Do writers block readers? Do readers block writers? ObjectDB implements the standard JPA locking model - see this manual page. (2
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3

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

against the same objects being queried by the other client. Seems like some sort of locking problem, but for some ... " />   <locking version-check="false" />       note: optimistic locking
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3

New Index causing troubles

) - locked com.objectdb.o.MST@1881a6d5 com.objectdb.o.MST.Z2(MST.java:1181) - locked com.objectdb.o.MST@1881a6d5 com.objectdb.o.IXA$1.run(IXA.java:418) - locked com.objectdb.o.LKM@7b5315ca ... on java.lang.ref.ReferenceQueue$Lock@6a33f62e Total blocked: 0 Total waited: 1 Stack trace
Issue
3

again merger missing logs + objectdb exception

when an optimistic lock exception is thrown during commit, and failed (locked) objects are loaded by keys ... lock exceptions, which should fail regardless of printing their location now to the log. ok, we'll ... , and may be ignored now. They should be shown on any OS when there is an optimistic lock exception
Issue
2

Error during closing an entity manager

, so that the enhancement is not necessary. We tested also 2.7.1_03 and with this one we get an optimistic lock ... above to an optimistic lock exception. More information and possibly a test case that demonstrates the exception ... of the optimistic lock exception and we fixed it in our code. From my sight of view this issue is fixed. btc_es
Issue
2

InternalException during producer/consumer scenario

.InterruptedException at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly ... of another user and ends after that commit might succeed in locking an object that was locked by
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2

Occasionally slow requests in load testing

, which locks that monitor. This is not related to any specific queries. We are running load test ... ="." mode="write" /> <locking version-check="true" />
Issue
2

Query in nested transaction returns detached entity if lazy-loaded

, during the commit an optimistic lock exception is thrown. The version flag of the entity was unexpectedly ... lock failed for object com.btc.ep.base.bl.internal.entities.mapping.MappingImpl#'2BO' (object ... (TransactionManagerImpl.java:311)     ... 45 more Caused by: com.objectdb.o._OptimisticLockException: Optimistic lock
Forum
2

Redeployment in GlassFish - Failed to open file

(EJBLocalObjectInvocationHandler.java:214) ... 58 more It seems that the ObjectDB database file is kept locked by ... close (which should release the database file lock) by Glassfish. As a workaround - try using ... locked, however the class loader exception still exists and I can not redeploy the application