About lock

forum_thread

Criteria query error: Unexpected query token

Using JPA2, I can save entities now in JBoss, and also fetch them uniquely by id. However, if I try to fetch it by getting back all instances (e.g. findAll, I get the following error:   ... /** * Version of object, supporting optimistic lock */ @ Column ( name = "opt_lock" ) @ Version ( ) private ...

 
forum_thread

Performance tuning, best practices

we have a system where we serve from a host process around 200 clients connected via webSockets (Jetty). The core process is running on a dedicated Windows 2012 server with 16 GByte RAM and 8 processor cores.  What is strange for us is that max 20% of the cpu resources are used and the IO subsystem is at maximum 30% of activity under heavy load but database queries are let's say not at the speed we would expect. We have currently 20.000.000 objects in the database, our configuration settings are: #1 2016-11-15 08:07 we have a system where we serve from a host process around 200 clients connected via webSockets (Jetty). The core ...

 
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Replication Issue

Hi, I am trying to use replication for this first time - so most likely I am doing something wrong. I have server on which I run my master DB server java -cp objectdb.jar com.objectdb.Server start -conf objectdbMASTER.conf on the same server I run a java program - which is writing objects every second a database KAKI.odb - here is the code: #1 2014-06-23 17:42 Hi, I am trying to use replication for this first time - so most likely I am doing something wrong. ...

 
issue

Unable to stop server after starting in SSL mode

ObjectDB server starts & stops fine in non-SSL mode using start & stop shell scripts. ObjectDB server starts fine in SSL mode using start script but throws error and does not stop using stop shell script. Non-SSL mode server start/stop output: ObjectDB Server started on port 7032. ObjectDB Server stopped. SSL mode server start output: ObjectDB Server (SSL) started on port 7032. SSL mode server stop output: Bug Version: 2.6.5 Priority: Normal Status: Fixed Replies: 2 Type:  Bug ...

 
issue

NPE at com.objectdb.jpa.JpaQuery.getResultList

This is very similar to issue #51  raised by kaosko .   So perhaps I should have added it there.  Anyway, here it is....   Bug Version: 2.2.7 Priority: Normal Status: Closed Replies: 3 Type:  Bug ...

 
forum_thread

Activation Issue

Hi, We bought a site license the yesterday. I ran the activation class this morning. That generated the activation key. I took that key as per the instructions, added it to the objectdb.conf inside the jar, and everything was happy. (this was with 2.3.7). However after a reboot I'm now getting the evaluation license restriction message again at compile time (which was I was seeing before putting the activation key in objectdb.conf). I tried upgrading to 2.3.7_02 and updating objectdb.conf with the activation key, but get the same behaviour. #1 2012-02-21 03:00 Hi, We bought a site license the yesterday. I ran the activation class this morning. That generated the a ...

 
faq

What is ObjectDB?

... management services (storage and retrieval, transactions, lock management, query processing, etc.), but it uses an object oriented model ...

 
forum_thread

Replication failed

Dear support members, I am trying to set up a replication url in objectdb.conf and have the the following error in the log files: [ObjectDB 2.3.4] javax.persistence.PersistenceException Failed to connect to server 127.0.0.1:6136 (Connection refused) (error 522) at com.objectdb.jpa.EMF.createEntityManager(EMF.java:176) My objectdb.conf: #1 2012-07-02 09:06 Dear support members, I am trying to set up a replication url in objectdb.conf and have the the following ...

 
issue

Entity Version History

ObjectDB manages automatic entity versioning (for optimistic lock purposes). Every entity object modification is reflected by a new version number. Previous values in the entity object that are overridden by new values, however, are discarded. Some applications may benefit from the ability to go back in time and view old versions (and old values) of entity object. Future versions of ObjectDB should support archiving old versions of specific entity classes.... manages automatic entity versioning (for optimistic lock purposes). Every entity object modification is reflected by a new version ...

 
issue

Sort of very large objects - out of memory

The attached test is failing with an out of memory exception when running with -Xmx512m It performs the following actions: 1) Create 5 persist threads which create and persist a large object in a loop 100 times each 2) Create 5 get threads which read 100 objects each in a loop based on object creation time and priority The message size should be around 1mb so I think there should be around 11mb of "live" data in play at any time. The objectdb cache settings are low in the config - database section is below for reference. Feature Request Version: 2.3.0 Priority: Normal Status: Active Replies: 2 Type:  Feature Request ...