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Replicated cluster recovery

Currently the slave servers are limited to read only (it is indicated at the beginning of the page

Vacuum - Reclaiming Unused Space In Odb

database after running the Doctor will be larger because of the use of BTrees (in which pages

Delete object from collection versus delete from JPQL

the synchronization between memory and database objects. See these manual pages for more details: DELETE

Performance problem

explained in this manual page. But this forum thread is about performance, so now

Unexpected query token 'delete' (SELECT is expected) (error 752)

simple codes(see attachment), failed. gzdillon Lai Yang DELETE queries should not be run with getSingleResult (which is for SELECT queries). Use executeUpdate instead. See this manual page. support Support

Understanding limitations of schema evolution

update page http://www.objectdb.com/java/jpa/setting/schema it is not clear how to handle this case

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

a very happy user, I created the wiki page for "objectdb" on stackoverflow (https://stackoverflow.com/tags

Navigation through lazy loading from Detached Objects

A main limitation of detached objects (as explained on the Detached Entities manual page) is: Retrieval by navigation from detached objects is not supported, so only persistent fields that have been loaded before detachment should be used. As explained on the Object DB vs EclipseLink/TopLink

Tutorial Typo

I was going through the Eclipse Spring tutorial as part of my training, and I noticed this. On the page: http://www.objectdb.com/tutorial/jpa/eclipse/spring/entity The tutorial first says: Enter META-INF as a new folder name and click Finish. Then, after the picture, it says: Right click the new

Sometimes the ObjectDB throws an internal expeption if a persist() was executed

version is not yet available on the download page. btc_es BTC EmbeddedSystems Sorry, 2.6.7_04

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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