About recovery

manual

Database Management Settings

Explains settings and performance tuning of the ObjectDB Java object database for JPA/JDO.... resize = "256kb" page = "2kb" /> <recovery enabled = "true" sync = "false" path = "." max ... The <size> element The <recovery> element The <recording> element ...

 
manual

Database Transaction Replayer

Explains how to use the ObjectDB object database Replayer tool to restore recorded Java/JPA/JDO actions.... for two different purposes: It enables recovery from a database failure by replaying the recorded operations. ...

 
manual

Online Backup

Online Backup enables backing up an ObjectDB database while it is in active use by applications. The ability to create a backup while the system is running is essential in applications and services that have to be available 24/7/365. An ObjectDB database can be backed up by simply copying or archiving the database file while the database is offline (i.e. when it is not open in an ObjectDB server and not in use by any application), since an ObjectDB database is stored as an o ...

 
manual

Database Replication and Clustering

Replication enables maintaining up to date version of an ObjectDB database on multiple nodes.... high availability, fault tolerance and prompt disaster recovery. In master-slave replication the master node manages the main ...

 
forum_thread

Objectdb recovery

Hello, I have question regarding objectdb recovery when objectdb is not finished correctly (power outage). We are using following configuration: <recovery enabled="true" sync="false" path="." max="128mb"/> <recording enabled="false" sync="false" path="." mode="write"/> Is there any possibility of data loss when power outage? ... Hello, I have question regarding objectdb recovery when objectdb is not finished correctly (power outage). We are using following configuration: <recovery enabled = "true" sync = "false" path = "." max ...

 
issue

Exception on the recovery of a database

I've also had this similar 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 during recovery of ... reflect a normal situation in which the last record in the recovery file is incomplete. In that case the last record is ignored (since it ...

 
forum_thread

Recovery file does not match db file

Just rebooted my production server, which had been running fine for months. When it came up, these errors started: ObjectDB 2.3.1_03] javax.persistence.PersistenceException Recovery file '/auctionologies/java/storage.odb$' does not match db file '/auctionologies/java/storage.odb' (error 145)  at com.objectdb.jpa.EMF.createEntityManager(EMF.java:176) at javax.persistence.EntityManagerFactory$createEntityManager.call(Unknown Source) Note: other than reboot the machine, I didn't do anything else. ... 2.3.1_03] javax.persistence.PersistenceException Recovery file '/auctionologies/java/storage.odb$' does not match db ... been fixed in version 2.4.0. Please check if the recovery file ( odb$ ) is empty, and if it is - just delete it and restart ...

 
forum_thread

recovery enabled="false", still creates tablename.odb$ files

Running in embedded mode, configuration specifies "<recovery enabled ="false"... />".  Still, tablename.odb$ files get created, and if still present after an abrupt stop, the application will not restart properly.   What do we need to do to not utilize recovery files (not have orphan tablename.odb$ files)? ... Running in embedded mode, configuration specifies "<recovery enabled ="false"... />".  Still, tablename.odb$ files get ...   What do we need to do to not utilize recovery files (not have orphan tablename.odb$ files)? ...

 
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. ... Basically, I have the master DB running with recording and recovery enabled and have a number of applications connecting to it. I realize ...

 
forum_thread

Replicated cluster recovery

If I create a replicated database cluster as per http://www.objectdb.com/java/jpa/tool/replication what is the behaviour of the master database after a failure? For example, say I have MasterDB and SlaveDB in the cluster. If MasterDB goes offline the application will automatically switch to SlaveDB. When MasterDB comes back online it will have missed any activity that occured during the downtime. #1 2011-04-08 16:07 If I create a replicated database cluster as per http://www.objectdb.com/java/jpa/tool/replication what is the be ...