1 Reply Latest reply on Nov 7, 2014 3:51 AM by Andrew Dinn

    Hibernate performance issue - single sesson for whole proces

    sivaraj thavamani Newbie

      Hi Team,

              I need clarificaton about my applicatio performance. I am using spring and hibernate. Before my application was,

              most of the <bag> collections are lazy=false, @ManyToMany as default fetch(fetch=select) and  using a session per service layer request(per each reqeust created a session - 500 times).

              The child elements are not required very first time while fetching the record. That time, it takes 3 minutes to complete all process.


              Now, I have changed the architecture with all <bag> collection are lazy=true, @ManyToMany as fetch=join and single session for whole process. Now, it takes 20 minutes

              to complete all process. I don't know, what is happen...


              Also, I have set hibernate_jdbc_fetch_size  as 50.



              I am doubting,

                          1. Due to single session it cause the issue(become heavy weight object)

                          2. fetch=join is causing the issue



              Please suggest me, Is there any more tune up configuration  I need to do in hibernate level.