About change


Failover from Master to Slave

Good morning! I am interested in ObjectDB for a client project I am currently working on. In order to evaluate your tool I would like to know if your product has the ability to failover from a Master Database to a Slave Database and then recover back to the master when the master comes back online. I don't see any documentation about automatic failover.   Thanks Rich   ... For support: do you have an idea how change the urls when in a Java EE JTA environment without restarting the app? ... delayed a few seconds to let all live applications see the change, but a delay of a few seconds should be acceptable in most ...


Run out of memory

Hi, I've been looking into ObjectDB for our use, where everything has been great apart from I'm stuck on the following problem.   I am trying to load a large file (> 1GB), process certain information and store it back in the database to access / modify later. I require to be able to rollback changes as well, where there can be massive amount of changes.   #1 2011-06-21 01:43 Hi, I've been looking into ObjectDB for our use, where everything has been great apart from I'm stuck on ...


Complex Schema Upgrade not working

Hello, We're trying to upgrade the DB-Schema. Simplied our source/original Schema/Class-Hierarchy looked like this: class contact.Contact class customer.Customer extends contact.Contact class member.Member extends customer.Customer We have database records within each class type (Contact, Customer and Member). ... - for adding and removing fields and for class hierarchy change. Configuration schema changes - for renaming packages, ...



This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation.(Interface of JDO)


Replication error on slave restart

I'm trying to enable replication on master server that was running with "recovery" enabled previously. I have copied database file to slave... and so on by manual. It worked fine. But if I restart slave server: ... DATA IS UP TO DATE](how? why?) 3) made 1 change to master ODB 4) opened master DB with explorer (User table see ...


Optimistic locking: prevent version increment on entity collection attribute

Hello, I have an entity E with an attribute which is a collection of entities (one to many relationship) with an optimistic locking strategy supported by a version field. Is it possible to prevent the increment of the version of entity E when entities are added to or removed from the collection? Something like the equivalent of @OptimisticLock(excluded=true) in Hibernate? Thanks, Farid ... a mapped by) then adding and removing entities should not change the version. Otherwise the version will be updated, and currently you ... side (Readings), added EAGER fetch to the collection no change. I have tried to persist the document first and then each ...



Release date: 2011-04-03 Download (3.99 MB) Binary:  objectdb-2.2.0.zip You should start by following a  tutorial or reading the manual ...


Modifying something with Explorer -> app JPQL with Enum doesn't work anymore

Hi! Scenario: Copy attached DB into localhost ObjectDB server (I'm running 2.5.1_03). Open attached project JavaEE Maven with NetBeans (7.4 beta in my case). Start ObjectDB on localhost as server. Run project on Apache Tomee 1.5.2 standard. Take a look at NetBeans' output to see how many entities are found with field type GOOD. There are 2 ways generate the bug: ... modify an entity's type from GOOD to BAD, save the change, close ObjectDB's connection, and run the project again. Important ... 05:09 I didn't change the enum and I don't use @Ordinal. That's the reason I use them ...


Wrong @Id type

Hi,  I have noticed some values of id column suddenly switched to int, although it is declared as long in our java class. Do you have idea why this happened? Screenshot attached.   ... version before the fix, with an UPDATE queries that change the IDs to the correct type). ObjectDB Support ...



... Fixed a Server/Explorer class loading bug (after schema change). Fixed a bug in the ObjectDB Doctor Tool. ...