About database

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Forum
15

Database absolute filepath

Is there a line of code that can be used to print out my databases absolute path? I have set it as follows: EntityManagerFactory emf = Persistence.createEntityManagerFactory("$objectdb/database/people.odb"); However, the data being shown in \lib\objectdb\database\people.odb is different
Forum
15

Master database switching to read-only mode, possibly caused by slave failure

We had a database failure causing a production outage. Both master and slave databases have failed ... database failed first and possibly caused the master to switch to read-only mode. The sequence ... - MASTER instance stopped responding to write requests. All requests sent to the database during 3
Forum
15

Multi-Threading/Distributed-Database Questions...

Greetings ObjectDB team, All below questions assume a very large database (~1,000,000,000 objects ... : Is it true that two read-only JPQL queries accessing the same database file actually run simultaneously ... to use two database files on two different physical hard disks while still being able to cross reference
Forum
15

Convert embedded database to server

Hello, What is the right way to convert an embedded database to a server one ? As a result ... data directory, start the server, and access the database from your application using a client ... database ( with remote connection enabled ) and a real server instance database ? Regards
Issue
15

Database File Compression

ObjectDB database files are usually smaller than database files of other Database Management Systems (object databases and relational databases) but additional internal compression is still possible ... . So the effect of using compressed ObjectDB database file on performance is unknown yet.
Forum
15

Database Inconsistency or corruption

entity. 2-) Problem Description I initialized the database with some ObjectValues. Persisting new ... the ObjectValue from the database, all values are lost. ObjectValue ID:=100, TYPE:=Person, REVISION:=2 ... side of the relationship it should be sufficient, since you will get the update applied on the database
Issue
15

Error in production. Failed to commit transaction: Unexpected database state: BTree -152 is not found

.0_25 (on Linux 3.11.0-12-generic). Please report this error on http://www.objectdb.com/database ... .Read .doGet (115 ): Failed to commit transaction: Unexpected database state: BTree -152 is not found ... database state: BTree -152 is not found (error 613) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:302
Forum
15

InternalError on query of empty database

Hi, I have reasons for sometimes trying to query the database before anything has been created. The problem is the database throws a InternalException when that happens. Is it possible to throw ... the database about its current schema? Thanks P. Sure. Usually a more appropriate exception is thrown in
Forum
15

Is ObjectDB the only object database that supports JPA?

Other Object database doesn't support JPA?   JPA is designed as an API for Object Relational Mapping (ORM), so many JPA features cannot be supported by regular object databases. For example, user defined primary keys and composite primary keys are features of RDBMS (relational databases
Forum
15

ObjectDB's Database Doctor Incorrect Error Report

.  Looking at the database with ObjectDB's Database Explorer though seems to show that the reference ... and Doctor Repair is attached.  So are the two databases and screenshots of Explorer showing the reference to the object and the existence of the object. There is indeed a problem with this database file