oracle:无法从套接字读取更多数据

sdo281158060 2007-11-19 08:53:43

package com.wubin;

import java.sql.*;
import java.sql.Connection;

public class TestOracle {
public static void main(String args[]) {
String username = "system ";
String password = "sdo ";
String driver = "oracle.jdbc.driver.OracleDriver ";
String url = "jdbc:oracle:thin:@localhost:1521:PLSExtProc ";
try {
Class.forName(driver).newInstance();
Connection conn = DriverManager.getConnection(url, username,
password);//此行出错，无法从套接字读取更多数据
Statement stmt = conn.createStatement();
String sql = "select * from wubin ";
ResultSet rs = stmt.executeQuery(sql);
while (rs.next()) {
System.out.println( "success ");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println( "sql exception! ");
}
}
}
错误：java.sql.SQLException: 无法从套接字读取更多的数据
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1118)
at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1070)
at oracle.jdbc.driver.T4C8TTIpro.receive(T4C8TTIpro.java:131)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:867)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:268)
at oracle.jdbc.driver.PhysicalConnection. <init> (PhysicalConnection.java:414)
at oracle.jdbc.driver.T4CConnection. <init> (T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at com.wubin.TestOracle.main(TestOracle.java:15)
sql exception!
代码有点长，但是简单，在Connection conn=DriverManager.getConnection(url,username,password);出现上面的错误，我的是10g 10.0.1的版本，用的是它自带的jdbc，用户名和密码是我登陆sqlplus的用户名和密码，能够正常登陆，数据库也能访问，可是用jdbc访问就是老上面的错误，大侠们帮忙

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