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Performance problem

Hi, we have a strange performance problem with ObjectDB 2.5.3_01 and JBoss 7.1.1. We have two ObjectDB databases on one ObjectDB server. Production database is running 5-10 times slower than test database. Their size and number of records are almost identical. When running production database in separate test environment its speed is very good. We did a performance analysis on our 2 linux servers one running JBOSS and other running ObjectDB. - CPU utilization of JBOSS server is max 5-10% (per core) #1 2014-01-13 18:57 Hi, we have a strange performance problem with ObjectDB 2.5.3_01 and JBoss 7.1.1. We have two ObjectDB databa ...

 
forum_thread

Pre-detach loading: retrieval by navigation not working in if statement

objectdb-2.6.3_04 JDK1.7 VM option at runtime: -javaagent:lib/objectdb.jar Experimental mode: objectdb.temp.no-detach NOT USED #1 2016-02-12 01:19 objectdb-2.6.3_04 JDK1.7 VM option at runtime: -javaagent:lib/objectdb.jar Experimental mode:& ...

 
issue

[ObjectDB 2.5.5_03] Unexpected exception (Error 990)

Hello! When I run this query SELECT t FROM Unit t WHERE t.lastGeocodedPosition IS NULL OR t.lastGeocodedPosition.receiveTime < :lastGeocodedPosition.receiveTime I get the following exception: Bug Version: Priority: Normal Status: Fixed Replies: 9 Type:  Bug ...

 
forum_thread

WebSphere Liberty Configuration

Hi! I've been trying to get ObjectDB configured with WebSphere Liberty server. I have been able to get the sample app running in TomCat but when I run the jee version of the guestbook in WebSphere I get a combination of errors depending on how I tweak the configuration the most promising error I get is this one: #1 2016-08-09 14:30 Hi! I've been trying to get ObjectDB configured with WebSphere Liberty server. I have been ab ...

 
manual

Database Management Settings

Explains settings and performance tuning of the ObjectDB Java object database for JPA/JDO.... the background index activation is completed, ObjectDB can start using the new indexes to accelerate execution of relevant queries. ...

 
forum_thread

Project runs in Eclipse but not when exported to runnable jar

I have a simple project that performs some stability calculations and displays a scale drawing of a model glider. I decided to use objectdb as a way to persist the values for later retrieval. The project works perfectly well when run from eclipse but nothing opens when I export to a runnable jar and execute that. No windows open, there are no eror dialogs etc. Commenting out all the code related to object db resolves the issue and the project runs, so I'm fairly sure it is something I've done relating to objectdb. #1 2011-08-15 06:37 I have a simple project that performs some stability calculations and displays a scale drawing of a model glider. ...

 
forum_thread

object creation during pmf.getPersistenceManager()

Hi #1 2011-07-28 10:37 Hi   We have observed that during pmf.getPersistenceManager(), objectdb is creating object instances ...

 
forum_thread

Request clarification of changes to accessor enhancement policy (non-getter prefix instead of getter suffix) AND annotations

In response to the forum posting http://www.objectdb.com/database/forum/994 changes were made to the way enhancement treats getters and setters (property accessors), namely there are no longer enhanced additional getters/setters, because the additional methods now use (since about version 2-6-5) this pattern: __odbHidden_[accessor_name] Instead of this pattern with a suffix (preserving the method as a setter or getter), prior to version 2-6-5: #1 2016-08-20 13:44 In response to the forum posting http://www.objectdb.com/database/forum/994 changes were made to the way enh ...

 
manual

JPA Lifecycle Events

Explains how to use JPA lifecycle events (client side triggers) with callback methods and listener classes. Callback methods are user defined methods that are attached to entity lifecycle events and are invoked automatically by JPA when these events occur. This page covers the following topics: Internal Callback Methods ...

 
manual

SELECT clause (JPQL / Criteria API)

Explains how to use the SELECT clause and projections in a JPA/JPQL query. The ability to retrieve managed entity objects is a major advantage of JPQL. For example, the following query returns Country objects that become managed by the EntityManager javax.persistence.EntityManager JPA interface Inte ...