About concurrency

forum_thread

OptimisticLockException

Ran into this error for the first time (after many years of using odb): Caused by: com.objectdb.o._OptimisticLockException: Optimistic lock failed for object model.UserSession#28 (object has version 2 instead of 3) Also the first time I'm using odb in C/S mode rather than embedded. Also have the Explorer open Questions: a) what is it about? ... haven't used ObjectDB in embedded mode. My issue was concurrency, and as OP posted, they are mainly single threaded. ...

 
release

2.6.0

Release date: 2015-01-13 Download (5.5 MB) Binary:  objectdb-2.6.0.zip You should start by following a  tutorial or reading the manual ...

 
release

2.6.1

Release date: 2015-02-12 Download (5.5 MB) Binary:  objectdb-2.6.1.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Index causes increased memory usage

Hello, #1 2012-05-10 20:52 Hello, In an effort to increase the speed of our queries with our embedded ObjectDB system, we configured ...

 
release

2.5.7

Release date: 2014-09-29 Download (5.49 MB) Binary:  objectdb-2.5.7.zip You should start by following a  tutorial or reading the manual ...

 
release

2.5.6

Release date: 2014-06-17 Download (5.46 MB) Binary:  objectdb-2.5.6.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Embedded & Activation & Scalation

Hi there, Our app is highly scalable and can be distributed among multiple processes on multiple machines. ObjectDB Server is not really scalable right now and would be a SPOF for our application. So, we'd like to embedded odb into each instance instead for now and point each to the same database folder, however I've got a few questions I couldn't find answers for: #1 2012-01-30 07:39 Hi there, Our app is highly scalable and can be distributed among multiple processes on multiple machines ...

 
release

2.5.5

Release date: 2014-04-06 Download (5.46 MB) Binary:  objectdb-2.5.5.zip You should start by following a  tutorial or reading the manual ...

 
manual

Database Management Settings

Explains settings and performance tuning of the ObjectDB Java object database for JPA/JDO. The <database> configuration element specifies back end (database engine) settings which are relevant on the server side and in embedded mode. The default configuration file contains the following <database> element: ...

 
release

2.5.4

Release date: 2014-01-05 Download (5.46 MB) Binary:  objectdb-2.5.4.zip You should start by following a  tutorial or reading the manual ...