[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4042) StatelessSession does not flush when using jdbc batch_size > 1

[Gael Beaudoin (JIRA)]

StatelessSession does not flush when using jdbc batch_size > 1
--------------------------------------------------------------

                 Key: HHH-4042
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4042
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.3.1
         Environment: JBoss 4.2.3, Linux, java 1.6, hibernate 3.3.1, entityManager 3.4.0, jboss seam 2.1.2, postgresql 8.3
            Reporter: Gael Beaudoin


I'm using a StetelessSession to insert millions of rows : it works great and without using much memory. But I've just seen that with a jdbc batch size of 50 for example (<property name="hibernate.jdbc.batch_size" value="0"/> in my persistence.xml) the last round of inserts aren't flushed to the database. For example, with 70 insert, only the first 50 are sent to the database.

I've searched a lot about this issues and on this thread (https://forum.hibernate.org/viewtopic.php?f=1&t=987882&start=0), the only solution found is to set the batch_size to 1, which is really a shame.
I've tried to flush the session, close the jdbc connection, etc etc ... no luck.

I'd be fine with a way to set the batch_size to 1 only for this method, pro grammatically, but I've not found any way to do that.

If you don't pay attention, it's a easy way to lose data.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira