About Eclipse

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there is a free version?

when I run my project from eclipse the console ask me, besides username and password, the license key, but I want to use it for free. How can I do? Please check what exactly you are running in Eclipse. According to your description it seems that your main class is the ObjectDB Activator
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Tomcat + JPA Problem

the exact version of Java, Eclipse and Tomcat that you are using. This example was tested with Tomcat ... the db-files? The database location is specified on: http://www.objectdb.com/tutorial/jpa/eclipse/web
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Tutorial issue

Ok, so I'm stuck on the Eclipse tutorial. I have a number of other projects running in Eclipse right now, so I created the new project as specified in Step 1 The only thing I did differently was in steps two and three I used the source folder "Tutorial/src" which is what I used to create
Issue
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Tutorial Typo

I was going through the Eclipse Spring tutorial as part of my training, and I noticed this.  On the page: http://www.objectdb.com/tutorial/jpa/eclipse/spring/entity The tutorial first says: Enter META-INF as a new folder name and click Finish. Then, after the picture, it says: Right click the new
Issue
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Web Application Tutorial

A tutorial that demonstrates how to use ObjectDB in a web application should be written and added to the Tutorials section. The following web tutorials are now available: JPA Web Application in Eclipse JPA Web Application in NetBeans Java EE 6 (J2EE) in Eclipse Java EE 6 (J2EE) in NetBeans
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JPA - ExceptionInInitializerError when creating EntityManager

"); // System.out.println("EMF: "+emf); //OUTPUT: EMF: org.eclipse.persistence.internal.jpa ... .PersistenceException: java.lang.NullPointerException at org.eclipse.persistence.internal.jpa
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Database is erased after deploying a new web application version

/tutorial/jpa/eclipse/web/listener When the application is stopped by the Tomcat manager ... automatically by Eclipse). Alternatively the listener class can be annotated the with @WebListener
Result
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ObjectDB version 2.4.0

Version 2.4.0 Added support of entity collections as query parameters. Added support of running ObjectDB within Eclipse 3.7 wrapper jar. Added support of sharing an identifier name for a variable and a parameter in the same query. Added support for using ObjectDB with GlassFish 3.1.2. Added