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Query fails with failed to read

catch at these levels. Is it possible that the web application was just restarted exactly ... your application). support Support we have it now 5-10 times per day. There is not any backup activity ... (there is no exception for this on our application level): [2018-08-17 19:14:41 #4 store.file] LocalFile.read error
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Database Management Settings

for most applications. The <recovery> element <recovery enabled="true" sync="false" path="." max
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Setting and Tuning of JPA Queries

the application, either at the EntityManager level as a default for all the queries in that EntityManager
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Strings in JPQL and Criteria Queries

and when applicable simple Java objects as well as criteria expressions.
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Auto Generated Values

) and an allocation size (the default is 50). A sequence is global to the application and can be used by
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What are the system requirements for using ObjectDB?

ObjectDB requires Java 5 or later (Java 6 is preferred). As a pure Java application, ObjectDB should be able to run on any platform that supports the Java Standard Edition. Either the Java Development Kit (JDK) or the Java Runtime Environment (JRE) can be used. A version of ObjectDB for .NET is currently under development.
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JPA Annotations for Java EE

The following JPA annotations are in use to integrate JPA into a Java EE application and are managed by the Java EE container:
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Step 1: Create a Java Project

We start by creating a new NetBeans Project: Open the [New Project] dialog box, e.g. by using File > New Project... Select Java > Java Application and click Next. Choose a Project Name (e.g. Tutorial). The name of the Main class should be tutorial.Main. Verify that exactly this case sensitive fully
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Step 3: Define a Spring DAO Component

the application to the Spring Framework. For instance, in this example the Spring container: Manages
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ObjectDB 1.0 Manual

Welcome to the ObjectDB for Java/JDO Developer's Guide. Here you can learn how to develop database applications using ObjectDB and JDO (Java Data Objects), the revolutionary database programming technology by Sun Microsystems. The main purpose of this guide is to familiarise you with ObjectDB

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
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  5. Search or file an issue
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