About online

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

 
forum_thread

exception during online backup

hi   from time to time i get exception during online backup in server/client config: ... hi   from time to time i get exception during online backup in server/client config: Exception in thread "Thread-0" ... I will try to reproduce it by a test that uses online backup extensively while the database is in use (unless of course you ...

 
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 : ... We are trying to create a servlet that performs database online backup. Unfortunately, even though no exception is thrown, backup files ... process) and it doesn't seem to be related to the online backup. Please post the code that you are using to run the ...

 
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

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: ... (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 ... is shown) and it is not related anymore to running of online backups. Maybe some new bug was added to the code with the previous ...

 
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 file-copying method while the database is online. So my first question is to this file-copying. I've read at ...

 
issue

Online Backup

An ObjectDB database file can be backed up simply by copying the file (with the associated recovery file if exists). This should only be done when the database is closed. Online backup will enable backup also when the database is open and in use.... This should only be done when the database is closed. Online backup will enable backup also when the database is open and in use. ... 2011-02-23 15:40 Online backup  is now implemented in ObjectDB 2.1 . ...

 
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 ... Are there plans for ObjectDB to handle incremental online backups, where a backup does not create a whole new copy of the DB, but ...

 
forum_thread

Online backup in embedded mode fails

Hi, As in topic. "online backup" fails when executed in embedded mode. Everything works fine with server mode. ... Hi, As in topic. "online backup" fails when executed in embedded mode. Everything works fine with ...

 
release

2.2.9

... in querying an empty database . Fixed a online backup file lock problem . Fixed a bug in managing a new ... by NOT . Fixed a bug in running online backup with no arguments . Added option for running ...