About WRITE

manual

Obtaining a JPA Database Connection

Shows how to use Java/JPA to connect to the ObjectDB Object Database. In JPA a database connection is represented by the EntityManager javax.persistence.EntityManager JPA interface Interface used to interact with the persistence context. See JavaDoc Reference Page... interface. Therefore, ...

 
forum_thread

Changing existing objects from Entity to Embedded

Hi, I realised that I have a mistake (from application logic point of view) in one of my JDO metadata files: ... by ObjectDB for existing objects? If it is, do I have to write the "embedded-only" clausule also to the child classes or is it sufficient to write it on their predecessor ? Is this only a bug in Explorer? Or do I ...

 
forum_thread

Out of memory

Hi, Today in the middle of the night ODB just crashed leaving this on console screen: ... Database workload is read heavy, but some write transactions that are really big (import lot of data from other source). ... sync = "false" path = "." mode = "write" /> <locking version-check = "true" ...

 
forum_thread

Can't post on your forum

Since yesterday, I can't post on the forum because it always says that I should log in in order to do that. I was already logged in, but, anyway, it appeared as not. I go to log in, then I authenticate, then I'm redirected to the home page, but it still looks that I'm not logged in, so I can't post on the forum. I tried removing the cookies, but nothing. I tried in another browser, but the same. I have new bugs to post, so it's pretty important. #1 2014-05-22 09:21 Since yesterday, I can't post on the forum because it always says that I should log in in order to do that. ...

 
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: ... randomly), that some db operation (read and also write) failed with an exception during an online backup of the same DB file was ... 2.6.2_04 the mistake is happening only when the DB read/write happens during the online backup (as described in the first post) ...

 
manual

[ODB1] Chapter 1 - About ObjectDB

Describes the main features and editions of ObjectDB 1.0 for Java/JDO.... in an RDBMS. Using such mapping makes it possible to write clean Java code, but still requires some familiarity with relational ...

 
release

2.6.8

... Version 2.6.7 Added an option to write javaagent enhanced classes to file ( for diagnosis ). ... in optimistic locking on find by using LockModeType.WRITE . Fixed exception when a named query doesn't exist ...

 
release

2.6.7

... Version 2.6.7 Added an option to write javaagent enhanced classes to file ( for diagnosis ). ... in optimistic locking on find by using LockModeType.WRITE . Fixed exception when a named query doesn't exist ...

 
forum_thread

EntityManager JPA or JDO impl and different behavior

Hi, I have an issue with the EntityManager. My persistance XML looks like: <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> ... Caused by: com.objectdb.o._PersistenceException: Failed to write to file ...   and it should never try and write on d drive as everything is running on c drive.   ... Build 2.3.4_04 should fix the new "Failed to write to file" error. Thank you for the "mvn eclipse:eclipse" tip. ...

 
forum_thread

OneToMany and cascade delete problem

Hi, I don't really know if this is a bug or maybe model that I make is bad. I have a problem with with two different classes with OneToMany relation to one, shared class. For example (first class): @Entity public static class Store { @OneToMany(targetEntity = Offer.class, mappedBy = "store") private List<Offer> offers; } second class: ... 2.x] javax.persistence.PersistenceException Failed to write the value of field field com.objectdb.test.bug.forum.F258$Store.offers ... by: com.objectdb.error.UserException: Failed to write the value of field field com.objectdb.test.bug.forum.F258$Store.offers ...