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forum_thread

Getting com.objectdb.o.UserException:

I am using the object db version 2.x in a web application that runs on tomcat4. I am using the default configuration file. ... that runs on tomcat4. I am using the default configuration file. I am getting the follwing error when I launch the ... Failed to create a new file 'file:C:\Program Files (x86)\Apache Group\Tomcat ...

 
forum_thread

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

Hi, we are using ObjectDB 2.5.4_04 on Linux. Our application, which uses ObjectDb as a DB, exposes a Java RMI interface which allows remote RMI clients to run JPQL queries on the DB. The application internally runs SELECT NEW ... queries. For example: ...   }   The attached DB file has 3 records which were updateted by a remote client (over RMI). They ... started the application without a DB. It creates a new DB file and then adds 5 records in it. The DB file is in trvr-good.zip. All works ...

 
release

2.7.0

... Added an option to write javaagent enhanced classes to file ( for diagnosis ). Extended temporary files support to ... in the same transaction. Fixed temporary file management for very large transactions ( feature request #255 ). ...

 
forum_thread

Index causes increased memory usage

Hello, ... with our embedded ObjectDB system, we configured our JDO file that defines our persistable objects with some unique String ... too much memory. You can try decreasing the temporary file threshold , but that may slow performance. To understand the ... Monday.  I'll have to take a look at the database file count Monday as well. According to the documentation the page ...

 
forum_thread

OutOfMemoryError on search after update on DB created with DB Doctor

It looks like there may be an issue with the DB files created with DB Doctor in recovery mode. This is the scenario that results in the OutOfMemory exception problem (using Object DB 2.5.4_04): 1. We instruct Object DB to create a 1Gb DB file on initial start-up using: <database> <size initial="1024mb" resize="256mb" page="2kb" /> This happens as expected. ... 1. We instruct Object DB to create a 1Gb DB file on initial start-up using: <database>   <size ... This happens as expected. 2. We use the DB file to store about 540 thousand records. At this stage there is no problem ...

 
forum_thread

Doctor - high memory usage

Hi, Is it possible to reduce Doctor memory usage? Right now for recovering 67MB database, I need to set heap space to at least 450MB. Even then whole process takes ages. Optimal setting for this database is about 650MB. It's about ten times of size of database. ... You may try decreasing the temporary file threshold . The Doctor will use less memory and more temporary ... still need about 450MB of heap space to only scan database file. edit ...

 
release

2.6.7

... Added an option to write javaagent enhanced classes to file ( for diagnosis ). Extended temporary files support to ... in the same transaction. Fixed temporary file management for very large transactions ( feature request #255 ). ...

 
api-jdo

javax.jdo.JDOHelper

This class can be used by a JDO-aware application to call the JDO behavior of PersistenceCapable instances without declaring them to be PersistenceCapable.(Class of JDO)

 
tutorial

JPA Web App Tutorial - IntelliJ Project

Opening a JPA Maven web application project in the IntelliJ IDEA.... IDEA: Download and extract the project zip file: JPA Web Application - Maven Project (6KB) . Open the project in IntelliJ IDEA: Select File > Open Project... . Select the guestbook-web directory and ...

 
tutorial

Spring MVC JPA Tutorial - IntelliJ Project

Opening a Spring MVC JPA Maven web application project in the IntelliJ IDEA.... in Download and extract the project zip file: Spring MVC JPA - Maven Project (7KB) . Open the project in IntelliJ IDEA: Select  File > Open Project... . Select the  guestbook-spring directory and ...