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Performance in large transactions

Hello, we have a performance problem when we use a large transaction. Let's do exactly the same in several transactions the ObjectDB works much faster. In our use case, we create many new entities ... iteration. (In the query, we search for an item of type Entity2. However, there is only one entity

UserException: Invalid configuration in 'internal' - Check permissions

. With such information I have tried to create an entityManager, in each slave, as follows ... .UserException: Invalid configuration in 'internal' - Check permissions.: Is there any way to change ... ) at com.objectdb.jpa.Provider.createEntityManagerFactory(Provider.java:57) Exception in thread

Memory Leak in EntityManagerFactory ?

understand. 1. the server is running in embedded mode 2. the static EntityManagerFactory (m_manager_factory in the example) is opened via m_manager_facory = Persistence ... and removed from memory (checked in the Profiler) 4. nevertheless there are lots of identical Copies

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

ObjectDB support, while the entities in a result set list from a JPQ query are initially managed ... of the container, and then in ObjectDB (but not in EclipseLink) lazy loading fails. The 3 possible solutions in the ObjectDB case seem to be: 1. Use explicit FetchType.EAGER on all desired collections

in-memory and on-disk support?

looking at replacing a setup of H2 where I have 40GB in-memory backed by 800GB on-disk, the 40GB in ... , the records at the end continuously purge as the new ones come in(duplicate write, one to in-memory and one to on-disk). Does ObjectDB offer a similar in-memory/on-disk option? I noticed the embedded and TCP

Corrupted Database or error in ObjectDBExplorer?

). Can you analyze the problem and tell us if its a problem of the explorer or a real problem in ... (its the 9th entity) If we execute queries in the explorer we observed the following: "select x from ... " -> the expected Ids, but null for the class any ideas? btc_es BTC EmbeddedSystems The data in this database

What role is the JDO in ObjectDB?

Mike Keith believe the JDO is out of date. Then what role of JDO in ObjectDB? Will our codes with JDO be out of date? Due in part to some of the failures of the EJB persistence model, and some ... and consuming them. JDO also had a query language that was decidedly object-oriented in nature, which did

Schema-Update: Deactivation of automatic entity class removing and introduction of a new class remove in the schema config

Hello, in our application we use ObjectDB in embedded mode as part of the Profile ... design. The product can be installed in different configurations (in other words with more or ... of entites which are not found in the class path. With this background it would be very helpful

Tracking changes to new collections (in enhancement mode) after flush

Hello, We have an issue with a list as a value in a hashmap. Within one transaction a new key-value ... operations being performed in between. Once the transaction is committed, the issue is that the last element in the list is not persisted and cannot be retrieved in another transaction. The last element

boolean field flips after schema update (in class) of another field

on several instances the values of other boolean fields in the same class (next to the new one) flip or change ... anything) and values in the database changed. We did not have this in our testing and stating environment, but now in field. Object DB version was upgraded maybe two times in the last months in the field

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.

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