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Optimistic Locking

.setProperty("javax.jdo.option.ConnectionURL", "db.odb"); PersistenceManagerFactory pmf

Failed to read DB file while online backup is running

the JDO access (with PersistenceManagerFactory), but for the online backup I use JPA (hence I found

JDO sequences from ORM file

I want to use sequences in JDO without using annotations. Normally this is done with a package-X.orm file, where X is a value passed to the PersistenceManagerFactory as the value of property "mapping". I'm encouraged to see that the JDO zip that comes with ObjectDB includes the DTD/XSD

Index causes increased memory usage

a single PersistenceManagerFactory which had a thread pool of 10 threads each of which could be called

evictAll() behavior

/ PersistenceManager and the L2 cache is per EntityManagerFactory / PersistenceManagerFactory, i.e

JDOHelper.isDetached failure ?

Running this example code: public static void main(String[] args) { PersistenceManagerFactory pmf = JDOHelper.getPersistenceManagerFactory("test.odb"); PersistenceManager pm = pmf.getPersistenceManager(); pm.currentTransaction().begin(); TestClass test

Query and commit simultaneously

can be obtained from the same shared EntityManagerFactory/PersistenceManagerFactory instance (which can be one per application/database). support Support

ObjectDB is opening too many sockets

anywhere in documentation. I was also searching in PersistenceManagerFactory and PersistenceManager

ClassCastException: cannot be cast to com.objectdb.spi.TrackableUserType

the PersistenceManagerFactory (or EntityManagerFactory), otherwise the database remains open (e.g

I can't get cascading delete to work in JDO

[] args) {         PersistenceManagerFactory pmf =             JDOHelper

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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