ObjectDB ObjectDB

Internal Website Search

1-10 of 22 resultsRefresh

Insertion Speed Rate and Batch Load

to 100K/second. I can definitely do 80K inserts/seconds on Oracle with batch insert on table with one primary key. 2. Is batch update/insert operation supported? I attached the files. edy_at_ssn Edy Oey ... per stored entity object. A batch load should reuse the EntityManager and persist a large number

Significant I/O costs during batch update or insert data.

Our application has some complex entities. We do batch update(merge detached entity) every 2 minutes. We find the period significant IO costs these days, and disappeared when turn off the batch updating. 1.ObjectDB is in embedded mode. 2.ObjectDB version is 2.3.7 3.Database file size is nearly

Storing JPA Entity Objects

explicitly in the persistence unit definition (in persistence.xml). Batch Store Storing a large number ... ().commit(); Splitting a batch store into multiple transactions is more efficient than using

ODB IndexActivation NullPointerException

) * Batch ended at 88 I've read that: "Indexing large amount of data may take considerable processing time ... to an existing Database and create an EntityManager. 1) sometimes the following System out: * Batch ended at '2LG' * Batch ended at '2LG' * Batch ended at '2LG' * Batch ended at '2LG' * Batch

Left join fetch behaviour doesn't retrieve children?

includes two new system properties that disable some query optimization: objectdb.temp.no-btree-batch objectdb.temp.no-multivar-batch Setting them as "true" on the server (or in embedded mode but not ... ... -Dobjectdb.temp.no-btree-batch=true -Dobjectdb.temp.no-multivar-batch=true Please report

Run out of memory

entity manager and following the batch shown at https://www.objectdb.com/java/jpa/persistence/store#Batch_Store_. However the problem is that it seems that even calling flush followed by clear

Client server mode no longer works after JRE install

the command line or batch file? The conf file cannot be used to state which jvm is being used? cmahony ... . So how do I do >server -b -client? cmahony Craig Mahony Hi. I fumbled around with batch files

NullPointer on query

.3.5_07. It is recreatable within the application but only towards the end of a 6hr batch! Its odd ... can. The same batch did not produce the error in versions earlier than 2.3.5_05 but I dont know ... it. At the moment it only seems to occur in a real application batch and this is too heavy to send as

NullPointer when accessing entity field

transaction and close the EntityManager for batch operations we use ThreadLocal for storing EntityManagers ... transaction (if not exists), do the operations using EM in ThreadLocal, on batch end we commit transaction ... ... Regarding the batch operations, where we usually do update on many objects and after that commit


deletes several entities in batch. Is this again some concurrency issue? I was inspecting the code and meanwhile one thread was deleting several entities of this type (in batch), second thread persists

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