ObjectDB Database Search

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Embedded & Activation & Scalation

folder, however I've got a few questions I couldn't find answers for: How will locking take place

Multithreading Test and Deadlock

MBs). support Support Thanks. It solved the dead lock . edy_at_ssn Edy Oey

Bulk Delete and Update - best practice?

based databases (in server mode the database is locked so drop can't be used). The only method I've

Entity is not related to ObjectDB, but i get exception from ObjectDB

? 

Could you please clarify how we could avoid it? This has really locked our work for a couple of days

Updating Entities

._OptimisticLockException: Optimistic lock failed for object application.model.Paygrade#184 (object

FileNotFoundException

I'm sometimes getting this exception.  Is there a simple answer to why it's occurring?  (It could take some time to produce code that results in this exception reliably). Caused by: java.io.FileNotFoundException: /tmp/objectdb/tmp/objectdb_1252962966569709153/ lock .lck (No such file or

Getting exception while executing the Query

I have facing a problem when i am executing the query first time, Please find the stack trace below java.lang.InterruptedException at java.util.concurrent. locks .AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1301) at java.util.concurrent.Semaphore.acquire

Should I use ObjectDB and JDO?

because JPA was more popular and thus receiving more support, and JPA object locking was more capable

Unable to execute update query

:745) Xmx is 4GB. This is how the tmp directory looks like after the error occoured: 0 lock .lck 4,0K

NPE at com.objectdb.jpa.JpaQuery.getResultList

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

ObjectDB 2.3.2

instead of Long ) and then updated. Fixed retrieval with pessimistic lock to bypass cache and to force refresh.

ObjectDB 2.3.1

UnsupportedOperationException  error message. Fixed a pessimistic lock timeout bug ( issue #520 ). Fixed

Best practise loading big data

that is somehow locked . Closing the entitiy manager should free the memory - but freeing no longer objects

Remove an entity which attributes were changed

lock exception of the removed entity.   If this operations on the entity are executed in

ObjectDB 2.2.1

Added support for using ObjectDB with JBoss AS 6.0 / 6.1 . Fixed several bugs in handling eager fetch. Fixed a pessimistic locking bug . Fixed a bug in using primary key fields in queries. Fixed a bug in queries on deleted objects before commit / flush.

Removed entities can be found by query in the same transaction

. It solves another issue (unexpected optimistic lock exception) but you may want to check if it also solves this issue. support Support

ObjectDB 2.1.0

Added Online Backup utility ( issue #16 ). Added Master-Slave  Replication / Clustering (issue #17 ). Added a PDF version of the ObjectDB manual (included in the download). Added sample (tutorials) Maven projects (included in the download). Added support of disabling optimistic locking

WeakRef Purge ObjectDb threads not stopping with Tomcat (in application container)

on (a java.lang.ref.ReferenceQueue$ Lock )         at java.lang

EOFException

engine (not using one server process), thus bypassing ObjectDB internal file lock protection

javax.jdo.JDONullIdentityException: The identity must not be null.

#2 reflects a locked database file (due to a failure during close) and not a corrupted database