ObjectDB ObjectDB

Internal Website Search

31-40 of 200 resultsRefresh

@ElementCollection Set<Integer> is emptied sometimes

already. ObjectDB seems to clear some fields that are @ElementCollection Set<Integer> of my objects ... Support The field is emptied, but not null. So, my @ElementCollection Set<Integer> fields become empty ... find yet a way to understand it. Initially, I was not using @ElementCollection on my Set<Integer

Safe Settings

Hi, I am trying to set up ObjectDb in a safe way that allows turning the machine off while database ... with both configuration settings with the debugger and I put a breakpoint in FileDescriptor#sync(). It never got triggered with no setting that I could come up with. How come? Thanks in advance

best practice for configuration settings

to our core process, each accessing objectdb. What is the best setting ? synchronized there is no documentation about this setting, what does it do/mean ? hgzwicker Hans-Georg Zwicker With 16 processor ... for a specific application requires testing and comparing different settings under the real conditions

Objectdb Server Mode set up with glassfish

Hi I'm new to Java, glassfish and objectdb, so please forgive my ignorance. I have a glassfish server working with the embeded mode of objectdb. I now want to set up objectdb in server mode. I ... my project ? How do I configure my persitence.xml file ? Do I need to set up something in Glassfish ? Thanks

NullPointerException while setting a new property value

access to entities from 2 threads: 1. Creating a list of entities, default values are set from ... .close(); } } 3. The code continues with a revalidation and re-setting some properties

Fetch Set from DB only works on debug mode

I have a class A, that contains a LinkedHashSet of another class named B. When I try to fetch that hash set, it returns a null pointer. BUT, when I run the program in debug mode, it works fine ... . In debug mode, by examining the set you load the data before closing the EntityManager. Read

-XMX settings recommendation

The default is 256M what is the recommended settings based on? It is the size of the DB? number of connections? If the DB has over 200GB of data and max connection of 400 then will I need to make this settings higher? Thanks. Trianglehead Json Error There is no magic formula, but usually larger

Global way to set Lazy-loading fetch functionality for all the fields

Ouba Mahamane Lazy / Eager can only be set locally per relationship, and for some extent also per query (using JOIN FETCH). support Support

client server set up and load

by number of users and more by the actual activity, how indexes are set, etc. support Support

com.objectdb.o._PersistenceException: Failed to locate set method for field property using reflection

platformConnector) { this.platformConnector.set(platformConnector); } ... } I get an exception thrown ... .objectdb.o._PersistenceException: Failed to locate set method for field property domain ... the data - clearly my fault not ObjectDB's. However the error message Failed to locate set method

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support