About backup

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.... ObjectDB 2.1 introduces support of online backup, which enables backing up an ObjectDB database while it is in use. This ... the following topics: Starting Online Backup Custom Backup Target Online Backup Thread ...

 
manual

Database Transaction Replayer

Explains how to use the ObjectDB object database Replayer tool to restore recorded Java/JPA/JDO actions.... apply recorded database operations on a matching database backup (if available). This ability is useful for two different purposes: ... This page covers the following topics: Backup & Recording Files Running the ObjectDB Replayer ...

 
forum_thread

Online backup problem

Hi, We are trying to create a servlet that performs database online backup. Unfortunately, even though no exception is thrown, backup files aren't created. When I turn on DEBUG logging in ODB, I get multiple ClassNotFoundExceptions like : ... trying to create a servlet that performs database online backup. Unfortunately, even though no exception is thrown, backup files aren't created. When I turn on DEBUG logging in ODB, I ...

 
forum_thread

exception during online backup

hi   from time to time i get exception during online backup in server/client config: ...   from time to time i get exception during online backup in server/client config: Exception in thread "Thread-0" ... backupQuery = em. newQuery ( "objectdb backup" ) ; backupQuery. execute ( ) ; ...

 
manual

Database Replication and Clustering

Replication enables maintaining up to date version of an ObjectDB database on multiple nodes. ObjectDB supports master-slave replication (cluster). When replication (or clustering) is used, the same database is managed on multiple machines (nodes), possibly in different geographic locations. This could help in achieving high availability, ...

 
forum_thread

Incremental online backup

Hello, Are there plans for ObjectDB to handle incremental online backups, where a backup does not create a whole new copy of the DB, but "updates" an existing backup? This behavior would make backups much faster as only a portion of the data would need to be copied. Such a feature would also allow to perform backups more often, several times a day, in order to always have a backup that's closer to the current state of the DB. Thank you ... for ObjectDB to handle incremental online backups, where a backup does not create a whole new copy of the DB, but "updates" an existing backup? This behavior would make backups much faster as only a portion of the ...

 
forum_thread

user defined backup target

Dear objectdb Team 1. I could not find a way, to declare the name of the backup-file (while running the database).  The only way I found is to create the folder in which objectdb will copy the database - file:   ... 1. I could not find a way, to declare the name of the backup-file (while running the database).  The only way I found is to ... backupQuery = em. createQuery ( "objectdb backup" ) ; backupQuery. setParameter ( "target" , ...

 
issue

user defined backup file

We need a way to do a (online) backup to a user defined backup-destination. Maybe in that way: backupQuery.setParameter("targetfile", new java.io.File("/User/Backup/test.objectdb")); which creates a backupfile with the name 'test.objectdb" in the directory '/User/Backup/' or ... We need a way to do a (online) backup to a user defined backup-destination. Maybe in that way: backupQuery. setParameter ...

 
forum_thread

Failed to read DB file while online backup is running

Hi, it happened already few times (seemingly randomly), that some db operation (read and also write) failed with an exception during an online backup of the same DB file was running and was close to finish its task. The version of ObjectDB I am running is 2.6.1.b02 Any idea what is causing this and how to avoid it ?   Stacktrace 1: ... and also write) failed with an exception during an online backup of the same DB file was running and was close to finish its task. ... Build 2.6.2_05 changed only online backup code, but possibly other changes in previous recent builds could cause ...

 
forum_thread

Online backup with JDO

Hi, I would like to try the Online Backup tool as I am making backups up to now with the not encouraged file-copying method while the database is online. So my first question is to this file-copying. I've read at the Database Doctor that copying the db file while it is online may cause corrupted DB file. Does this mean that the copy can be corrupted or even the source file ? My second question is about starting the online backup. The manual suggests starting it via the EntityManager with the code ... Hi, I would like to try the Online Backup tool as I am making backups up to now with the not encouraged ... ? My second question is about starting the online backup. The manual suggests starting it via the EntityManager with the code ...