Hibernate query.list 内存不释放

Question

SQLQuery query = sourceSession.createSQLQuery("select * from " + tableName).addEntity(c);
query.list();
//不停调用query.list();内存不断增大，不释放，请问大家有没有遇到过
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration> <session-factory>
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@192.168.1.38:1521:PLATFORM</property>
        <property name="hibernate.connection.username">njsqjz</property>
        <property name="hibernate.connection.password">gimis2007</property>
        
        <property name="hibernate.cache.use_second_level_cache">false</property>
        <property name="hibernate.cache.use_query_cache">false</property>
         
<!--  <property name="hibernate.connection.url">jdbc:oracle:thin:@192.168.100.154:1521:NJSQJZ</property>
        <property name="hibernate.connection.username">njsqjz</property>
        <property name="hibernate.connection.password">gimis2007</property>  -->       
        
        <property name="hibernate.jdbc.fetch_size">10</property>
        <property name="hibernate.jdbc.batch_size">20</property>
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <property name="hibernate.show_sql">true</property>        <!-- bonecp -->
        <property name="hibernate.connection.provider_class">com.jolbox.bonecp.provider.BoneCPConnectionProvider</property>
        <property name="bonecp.idleMaxAgeInMinutes">10</property>
        <property name="bonecp.idleConnectionTestPeriodInMinutes">3</property>
        <property name="bonecp.partitionCount">1</property>
        <property name="bonecp.acquireIncrement">1</property>
        <property name="bonecp.maxConnectionsPerPartition">1</property>
        <property name="bonecp.minConnectionsPerPartition">1</property>
        <property name="bonecp.statementsCacheSize">0</property>
        <property name="bonecp.releaseHelperThreads">1</property>
        <property name="bonecp.connectionTestStatement">SELECT 1 FROM DUAL</property>
        
    </session-factory>
    </hibernate-configuration>hibernate内存oraclejdbc