这样一来的错误如何解决: READ_COMMITTED and SERIALIZABLE are the only valid transaction levelsDSRA0010E

[suypower1]

我在使用was6连接数据库oracle时候遇到这样的问题
java.sql.SQLException: READ_COMMITTED and SERIALIZABLE are the only valid transaction levelsDSRA0010E: SQL 状态 = null，错误代码 = 17,030 >


我的代码是这样的:

InitialContext ic = new InitialContext();
DataSource ds = (DataSource)ic.lookup("jdbc/MaxisOracle1");
Connection con = ds.getConnection();
//走到这里时候报错的
//con.setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED)；
//Statement st = con.createStatement();
//ResultSet rs = st.executeQuery("select count(*) from hotlinkforum");
//out.println("forum count is: " + rs.getInt(1));


不知道如何处理