About recording

release

2.2.0

... Changed default configuration (enabled recovery, disabled recording). Fixed a critical database structure bug ( issue #36 ...

 
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: ... path = "." max = "128mb" /> <recording enabled = "true" sync = "false" path = "." mode ...

 
forum_thread

odb file size doesn't shrink

Hello, why delete from ... doesnt modify size of odb? Even in in embedded mode, and in server mode i use recovery, not recording mode. ... in embedded mode, and in server mode i use recovery, not recording mode. ss2016-11-17at01.24.22.png ...

 
forum_thread

best practice for DB recovery

Hi, I'm trying to come up with the best approach for supporting some kind of hot standby for my master DB. ... DB. Basically, I have the master DB running with recording and recovery enabled and have a number of applications connecting to ...

 
forum_thread

Page dividing support in Objectdb

In Mysql, one cat dividing records by select * from ttt limit x,length. Then how to do it in Objectdb? #1 2011-08-23 03:33 In Mysql, one can divide records by select * from ttt limit x,length. Then how to do it in Objectdb? ...

 
forum_thread

WORM (Write once read many) support

Hello, we would like to propose a feature in the objectdb if this is not already available. We use objectdb in our product development and deployment in high secure environments like police, military and government agencies. We have developed a specialized hardware device in a form of appliance which acts as archiving device for processing and storing logs, records and transactions. Hardware is specific in a way that it has a mechanism for preventing the data to be changed once they are written. #1 2017-02-12 10:45 Hello, we would like to propose a feature in the objectdb if this is not already available. We use objectdb in ou ...

 
forum_thread

String comparison in query where clause

I am having trouble getting a simple string comparison to work in an SQL "where" clause.  It is my understanding that queries are case sensitive by default and I do not want that, so I am constructing the query as follows... SELECT e FROM Exercise AS e WHERE UPPER(e.name) = ?0 and then I am converting the parameter (representing by position ?0) to upper case.  I am certain the parameter value is correct, and there should be a matching record in the database, but my query returns no result. #1 2016-03-23 14:38 I am having trouble getting a simple string comparison to work in an SQL "where" clause.  It is my understan ...

 
page

ObjectDB - Object Database for Java (JPA/JDO)

Fast Object Database for Java with JPA 2 and JDO 2 support. Reduce development time and improve productivity ObjectDB is the most productive software for developing Java database applications using the Java Persistence API (JPA). It is the first persistence solution ...

 
forum_thread

Optimistic lock failed : object has version .. instead of ..

I do basic storage and retrieval of Record class. When I stress the retrieval/storage with Apache JMeter sometimes (at some requests) I get this exception.   [ObjectDB 2.5.0] javax.persistence.OptimisticLockException Optimistic lock failed for object entities.Record#'1405/838/2011/121' (object has version 125 instead of 126) (error 673) at com.objectdb.jpa.EMImpl.beforeCompletion(EMImpl.java:381) ... Thank you! #1 2013-06-18 13:46 I do basic storage and retrieval of Record class. When I stress the retrieval/storage with Apache JMeter ...

 
issue

com.objectdb.o.InternalException: java.lang.ArrayIndexOutOfBoundsException: null

I got exception. Source code in the attach.  If the number of entries is less than 87, no exceptions. Bug Version: 2.5.4 Priority: Normal Status: Fixed Replies: 1 Type:  Bug ...