Java 数据库连接postgreSQL

我正在使用postgres作为我的应用程序的数据库。我的应用程序代码中的连接一旦建立就无法释放，这使得数据库连接在出现致命错误后中断

代码片段：

try {

    session=sessionFactory.openSession();
    
    Transaction tx = session.beginTransaction();

} finally {  
    if (session != null) {  
        session.close();
    }    
}

<property name="hibernateProperties">
<props>
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.hbm2ddl.auto">auto</prop>
<prop key="hibernate.transaction.auto_close_session">on_close</prop>
<prop key="hibernate.multi_tenant_connection_provider">com.myapp.connections.MultiTenantConnectionsProvider </prop>
<prop key="hibernate.multiTenancy">DATABASE</prop>
<prop key="hibernate.tenant_identifier_resolver">com.myapp.connections.CurrentTenantIdentifierResolver </prop>
</props>
</property>

休眠配置文件：

try {

    session=sessionFactory.openSession();
    
    Transaction tx = session.beginTransaction();

} finally {  
    if (session != null) {  
        session.close();
    }    
}

<property name="hibernateProperties">
<props>
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.hbm2ddl.auto">auto</prop>
<prop key="hibernate.transaction.auto_close_session">on_close</prop>
<prop key="hibernate.multi_tenant_connection_provider">com.myapp.connections.MultiTenantConnectionsProvider </prop>
<prop key="hibernate.multiTenancy">DATABASE</prop>
<prop key="hibernate.tenant_identifier_resolver">com.myapp.connections.CurrentTenantIdentifierResolver </prop>
</props>
</property>

线
假的
汽车
闭上
com.myapp.connections.MultiTenantConnectionsProvider
数据库
com.myapp.connections.CurrentTenantIdentifier解析程序

我怎样才能解决这个问题？请帮忙