Felix König ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5a4bad5... ) *commented* on HHH-16249 ( https://hibernate.atlassian.net/browse/HHH-16249?atlOrigin=eyJpIjoiZTViMz... ) Re: StatelessSession does not flush when using jdbc batch_size > 1 ( https://hibernate.atlassian.net/browse/HHH-16249?atlOrigin=eyJpIjoiZTViMz... ) Hey there, I am not sure why this is a requirement. In fact, using the stateless session the “conventional way”, meaning purely within a transaction managed by the stateless session, works fine for all jdbc batch sizes: statelessSession.getTransaction().begin(); // do stuff statelessSession.getTransaction().commit(); But in the example I provided, the batch size is 2, and the third entity is lost (the test fails). ( https://hibernate.atlassian.net/browse/HHH-16249#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16249#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100217- sha1:45db922 )