Hibernate 4 has performance issues after migration
Our project was moved from JSF1.1 / Hibernate3x to JSF2.1.7 / Hibernate4, performances were added along with it. After selecting the list / entries from the database, it took 30 seconds to migrate, but now it takes 3 to 4 minutes after migration. This is one of the most important problems.
The table I am trying to get has 101 columns and has 11000 records. We are using SQL Server 2008 for the database
Eclipse Kepler development environment
Please help me!
hibernate.cfg.xml
<hibernate-configuration>
<session-factory>
<property name="dialect">
org.hibernate.dialect.SQLServerDialect
</property>
<property name="myeclipse.connection.profile">
com.microsoft.sqlserver.jdbc.SQLServerDriver
</property>
<property name="connection.driver_class">
com.microsoft.sqlserver.jdbc.SQLServerDriver
</property>
<property name="hibernate.show_sql">false</property>
<property name="connection.autocommit">false</property>
<!-- Enable Hibernate automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- connection pooling properties -->
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.min_size">3</property>
<property name="hibernate.c3p0.timeout">100</property>
<property name="hibernate.c3p0.max_statement">50</property>
<property name="hibernate.c3p0.idle_test_period">300</property>
<property name="hibernate.c3p0.acquire_increment">3</property>
<property name="transaction.factory_class">
org.hibernate.transaction.JDBCTransactionFactory
</property>
<!-- For Hibernate caching -->
<property name="hibernate.cache.use_query_cache">true</property>
<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.ehcache.EhCacheProvider</property>
<property
name="hibernate.cache.provider_configuration_file_resource_path">
com/src/hibernate/ehcache.xml
</property>
</session-factory>
Implementation
public List search(){
Transaction tr=null;
session=HibernateSessionFactory.getSession();
StringBuilder qry = new StringBuilder();
List list=new ArrayList();
try{
tr=session.beginTransaction();
qry.append("select locn,(select locationTypeName from TblLocationTypes where locationTypeIdPk = "
+ " locn.trackLocationInfoLocationTypeIdFk) as locType,"
+ "(select locationDivisionName from TblLocationDivision "
+ "where locationDivisionIdPk=locn.trackLocationInfoDivision) as divis "
+ "from TblTrackLocationinformation locn where 1=1 ");
Query query = session.createQuery(qry.toString());
list = query.list();
tr.commit();
}
catch(Exception e){
if(tr != null){
tr.rollback();
}
e.printStackTrace();
}finally{
session.flush();
session.clear();
session.clear();
}
return list;
}
Tried even with
query.scroll instead of query.list , but the problem remains the same.
I have mentioned and tried all the links below but nothing solved my problem
Migrating from Hibernate 3 to 4 slows down startup
Why is Hibernate query.list () slower?
A simple hibernate request comes back very slowly
I could see some hints with the .hbm.xml file
.hbm.xml
<set cascade="delete" inverse="true" lazy="false" name="tblTrackLocationrelations" sort="unsorted" table="tbl_track_locationrelations"> <key column="track_LocationRelations_location_id_fk" /> <one-to-many class="com.src.hibernate.TblTrackLocationrelations" /> </set>
After changing the lazy design, it shrank by almost 1 minute. Changed from lazy = false to lazy = true
<set cascade="delete" inverse="true" lazy="true" name="tblTrackLocationrelations" sort="unsorted" table="tbl_track_locationrelations"> <key column="track_LocationRelations_location_id_fk" /> <one-to-many class="com.src.hibernate.TblTrackLocationrelations" /> </set>
In addition to this, there were several codes that continued to be called through the constructor, so cleaning up the code will help get rid of the performance issue.