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6

com.objectdb.o.InternalException: Unexpected internal exception

Hi, I am using objectdb.jar version 2.6.8 (installed via Maven). I am trying to authenticate a user. Initially, the database is empty. I have the following query: @javax.persistence.NamedQuery( name = "getPersonByName", query = "SELECT _person FROM metamodel.user.Person as _person
6

How to configure where the ODB is stored?

of ObjectDB". BUT... I DIDN'T INSTALL OBJECTDB - my maven build downloaded it and embeded
6

Insert time increases as db grows.

maven goal and got no effect. I've also tried to use enhancer manually on classes, but still getting
6

Cannot cast com.objectdb.jpa.Provider to PersistenceProvider

. All my other libs work without problem in /lib/ext. I know the tutorial, but I'm using Maven. WEB-INF/lib
1

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 exceptions

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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Which JPA is Faster?

 

See a comparison of Hibernate, EclipseLink, OpenJPA, DataNucleus, MySQL, PostgreSQL, Derby, HSQLDB, DB4O by Versant, H2 Database, SQLite and ObjectDB

in the JPA Benchmark.

Copyright © 2003, 2010, 2023  ObjectDB Software, all rights reserved. The JPA API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the open source JPA 2 RI (EclipseLink) and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0. The JDO API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the JDO 2.2 API and is available under the terms of the Apache License, v. 2.0. Images on this website are available under these licecnes. Documentation on this website explains how to use JPA in the context of the ObjectDB Object Database but mostly relevant also for ORM JPA implementations, such as Hibernate (and HQL), EclipseLink, TopLink, OpenJPA and DataNucleus. ObjectDB is not an ORM JPA implementation but an Object Database (ODBMS) for Java with built in JPA 2 support.