About modified

issue

JQL-Update Queries fails with activated L2-Cache

When using JQL-Update Queries it is basically not working without calling entityManager.clear() after a transaction commit. When the clear() method isn't called the entityManager will never return a container the updated Entities. Scenario 1: Disabled L2 Cache, updating elements using UPDATE-Query and fetching Entities afterwards from database. Expected result: Getting changed Entities from database - Actual result: No changes are visble. ... a cached entity object in its persistence context has been modified by an UPDATE query. By using clear , you clear all cached ...

 
forum_thread

Multitenancy with discriminator

Hello, I have a very large business application that makes use of the Hibernate "Filters" feature and of the EclipseLink "Single Table Multitenancy with discriminator" feature in order to implement entities filtering based on a discriminator. Here is an example of one of my business objects: public class BusinessPartner {     protected String id;     protected Domain domain;     ... } #1 2015-02-19 09:32 Hello, I have a very large business application that makes use of the Hibernate "Filters" feature and ...

 
issue

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

we have a database shutdown, logs are showing: [2017-07-10 21:07:23 #1 store] Database 'F:\Hummingbird\Objectdb\db\coreSystemDb.odb' is opened by 11028@wzbhb101 [2017-07-10 21:07:23 #2 server] Server on port 3333 has started by 11028@wzbhb101 [2017-07-14 07:08:38 #3 store] SectionClassifier: SectionClassifier{2->merger[2699]-missing:1} [2017-07-14 07:09:08 #4 store] SectionClassifier: SectionClassifier{2->merger[2699]-missing:1} ... keeps information on the last transaction in which it was modified). Is it possible that you had this corruption for 2 months, but it was ... keeps information on the last transaction in which it was modified). Is it possible that you had this corruption for 2 months, but it was ...

 
forum_thread

Corrupted Database or error in ObjectDBExplorer?

Hello, we have problems when we open our Database file with the ObjectDB-Explorer (2.6.8_b8). Can you analyze the problem and tell us if its a problem of the explorer or a real problem in the Database-File? An analysis with the DB-Doctor found no problems.   We observe the error if we try to open the Tree or Table Window for com.btc.ep.analysis.test.bl.internal.dmos.RequirementBasedTestCaseImpl  (its the 9th entity)   ... class and then opening the database with the modified class available in the classpath. Removing that ...

 
manual

Entity Management Settings

Explains settings and performance tuning of JPA entities in ObjectDB, the fast Java object database for JPA/JDO.... are "weak" , "soft " and "strong " . Modified entities are always held by strong references in the persistence ...

 
tutorial

Step 3: Define an EJB Session Bean

Explains how to define an EJB session bean in a NetBeans Java EE web application. Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Session Bean] dialog box by right clicking the guest package node (in the [Projects] window), sel ...

 
forum_thread

Schema migration - long to String

Hi, I need to change field type in our model from long to String. After changing filed type in our model and repairing database with doctor, most of our entities is gone. Doctor puts some errors on console: ... write (after making them dirty) all the instances of that modified type immediately after the change (and before running the Doctor). ...

 
forum_thread

locks on pure query activities

analyzing the dynamic behavior we can see from the thread dump that a lot of our threads that are just doing simple queries show locks like these (question is: why there are locks and how could we get rid of that):   log1:   #1 2017-04-28 09:28 analyzing the dynamic behavior we can see from the thread dump that a lot of our threads that are just doing simp ...

 
tutorial

Step 3: Define an EJB Session Bean

Explains how to define an EJB session bean in an Eclipse Java EE 6 web application. Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selec ...

 
tutorial

Step 3: Define a Spring DAO Component

Explains how to define a JPA DAO component (bean) in a NetBeans Spring MVC JPA web application project. Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest packa ...