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Error opening database with ObjectDB Explorer when using composite key

Hi, When I use a composite key in an entity and fill this database with this entity, ObjectDB explorer throws me an error when opening this database saying something about an invalid ID class and not ... with the issue. support Support Added a sample database copaco Edwin Brood Thank

Example database world.odb

Hello! Where can I find classes for example database world.odb? Thanks for the answer. Robin_2005 ... database to the standard output in JSON format. You will need google-gson in order to run it. support Support Thanks a lot! How to save to World database persistent objects that describes

Page size - changing after database creation

Hi, I was wondering, is it safe to change page size after database is created and filled with data ... Walkowski The page size configuration setting should only affect new created databases, so it should be fine to change it (after a backup, to be on the safe side), but you will have to create a new database

Activation key causes database to not start

-431. Please report this error on http://www.objectdb.com/database/issue/new com ... ). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException ... .com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o.InternalException

DB Doctor with Recording enabled and using Database replication

is there any simpler way? thamal Tomas Hamal Yes, if you run the Doctor to fix a database, i.e. create a new database file, you will have to start the replication again with a copy of the new (fixed) database for the slave to start with and with no recording files. support Support

Database connection url

I'd like to run a database called db1.odb on port 6136, and simultaneously open it in the explorer. I left the conf file set as: <server>     <connection port="6136" max="100" />     <data path ... /db1.odb"); However, I don't see an database named db1.odb created under db-files/ nor can I connect

Get database schema from objectDB file

I am a little bit confused about that Can someone explain what steps do I have to do in order to get the database schema in java given only the objectdb file? i.e. database.odb ezazop Akis Zazopoulos See the JPA Metamodel API. support Support

Add Indexes to existing Database

of an existing Entity. This changes affects also existing databases. Is there any best practice how to do the versioning of existing databases? Just open and save everey Object? thanks Arne Arne Arne

_UserException: Attempt to open a database file '...' that is currently in use

mode the database cannot be accessed at the same time by more than one process. Make sure that the database file is closed by one run before another attempt to access it by another run, or use client-server mode. support Support

Exception on the recovery of a database

I've had this exception on the recovery of a database: [2011-11-06 04:33:41 #19 store] Exception ... . After this recovery - did you have any problems with the database? Can you check it with the Doctor? support Support Ok, sounds reasonable. No - there were no problems with the database after recovery but I thought

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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