About database

release

2.6.6

... Version 2.6.4 Added memory only database mode. Added an option to cascade detachment to ... . Added an option to disable reuse of database page objects . Improved release of query resources. ...

 
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 ...

 
page

What is the Java Data Objects (JDO)?

The Java Data Objects (JDO) is another standard for accessing persistent data in databases, using plain old Java objects (POJO) to represent the object model. Unlike Java Persistence API (JPA), which is designated to be used with relational databases, J ...

 
faq

Is ObjectDB better than Object Relational Mapping (ORM)?

As noted above, using ObjectDB instead of a relational database and ORM combination is easier and leads to better performance. ORM ... however, are very useful where the use of a relational database is mandatory (e.g. as a result of a customer request or when a new ...

 
manual

Server User List

Explains how to define and set users, directories and permissions in the ObjectDB fast Java database server for JPA/JDO.... the master user itself cannot be used to connect to the database. The <dir> element <dir path = "/" ... The required permissions attribute specifies which database file permissions are granted. The comma separated string value may ...

 
release

2.3.4

... fields with cascading persist after updating the database and before commit (issue #78 ). Fixed ... JPQL queries. Added support of ";drop" database url parameter. Adjusted the Enhancer to the new Java 7 ... exceptions. Improved support of non standard database file suffixes. Changed fetch of collection elements. ...

 
forum_thread

How to open a running db in ObjectDB Explorer?

Hi! I've just discovered that I can't see the content of a database while it's in use. Is there any way in which I could do that? It's not nice at all to close the application, copy the db in another location, start the application then finally I could explore my data, but it will be just a copy of the data, not the live information. ... just discovered that I can't see the content of a database while it's in use. Is there any way in which I could do ... embedded mode, client server mode supports accessing a database concurrently from multiple processes (embedded mode supports ...

 
release

2.6.7

... Version 2.6.4 Added memory only database mode. Added an option to cascade detachment to ... . Added an option to disable reuse of database page objects . Improved release of query resources. ...

 
issue

DISTINCT key causing internal exception on 2.6.4.b10

I observed that on new ObjectDb v.2.6.4.b10 query below causes internal exception SELECT DISTINCT $1 FROM Pa3DictionaryItem $2 JOIN $2.values $1 WHERE ($2.namespace == 'com.anritsu.pa3.ttcn3' AND $2.key == 'TliEvent' AND $1 != '') Query above also worked fine on ObjectDb version 2.6.1.b06 ... ObjectDB Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ... Screenshot for used ObjectDb version b) Original database for reproduce this issue from your side. Have a nice playing 8-) ...

 
forum_thread

Compress ODB file with XML content

Harman company requested to reduce ODB size as much as possible after database created and one of unliked solution was to use ZIP/UNZIP after/before use object DB database. Harman would like to ask Object Db team about possible internal methods to reduce/compress object DB data on run-time or after close ODB file. Does exist any compress data solution from ObjectDB side? ... requested to reduce ODB size as much as possible after database created and one of unliked solution was to use ZIP/UNZIP after/before use object DB database. Harman would like to ask Object Db team about possible internal ...