Accelerate Your JBoss Enterprise Middleware - Red Hat Summit

Accelerate Your JBoss Enterprise Middleware –Persistence JPA/HibernatePersistencePersistenceJPAJPAHibernateHibernate● Important notes on batch inserts:● You must both specify the ordered inserts parameter to Hibernate,and have a JDBC driver that can rewrite the statements into one.● The Hibernate property enables the JDBC driver to detect that factthat all the inserts are to the same table, and can be rewritten.● The Hibernate property orders the inserts statements by their primarykey values (actually uses the entities hash code).● If your JDBC driver does not have the ability to rewrite the statementsinto one, then throughput will suffer.● You are adding the sort overhead before executing the statements,so without benefit of the rewrite of the statement, that shortens theinsert time, you just make things take longer.● This capability does show benefits in OLTP applications, as well asbatch applications, but careful testing is in order for OLTP workloads.