hibernate中使用jdbc连接数据库的问题
在应用中我使用了jdbc的方法连接数据库进行查询
Class.forName( "oracle.jdbc.driver.OracleDriver ");
String   urlttt= "jdbc:oracle:thin:@127.0.0.1:1521:test ";
String   userttt= "mip_hbcgy ";
String   pwdttt= "jhcomn ";
Connection   conn=DriverManager.getConnection(urlttt,userttt,pwdttt);

有时候页面是正常的，但有使用出错
出现的错误提示是：
Pre-bound   JDBC   Connection   found   -   HibernateTransactionManager   does   not   support   running   within   DataSourceTransactionManager   if   told   to   manage   the   DataSource   itself.   It   is   recommended   to   use   a   single   HibernateTransactionManager   for   all   transactions   on   a   single   DataSource,   no   matter   whether   Hibernate   or   JDBC   access.


------解决方案--------------------
用了Hibernate 连接池，为啥还要用JDBC呢
------解决方案--------------------
数据库连接要用hibernate提供的方法：
Session session = getSession();
Connection connection = session.connection();
数据查询可以用JDBC的方法：
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery( "select sum(decimal(conitem2,10,2)) as aa ,comid from UBL_PROCONTENT where proid= "+proid+ " group by comid ");
------解决方案--------------------
好象是你下面的操作没有事务控制