1

可能重复：
Java Oracle 本地主机连接错误 (ORA-12505)

当我尝试连接到 Oracle 10g Express Edition 时，它给了我错误：

java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
The Connection descriptor used by the client was:
localhost:1521:xe

我的示例代码：

    Class.forName("oracle.jdbc.OracleDriver");
    Connection connection = null;
    connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "mk119", "mk119");
    Statement stmt = connection.createStatement();

在数据库中：

SQL> connect mk119
Enter password:
Connected.
SQL> ed
Wrote file afiedt.buf

  1* select sys_context('userenv', 'instance_name') from dual
SQL> /

SYS_CONTEXT('USERENV','INSTANCE_NAME')
----------------------------------------------------------------------

xe

SQL>

请帮助我。

编辑：堆栈跟踪：

java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
The Connection descriptor used by the client was:
localhost:1521:xe

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:261)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
        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:579)
        at java.sql.DriverManager.getConnection(DriverManager.java:221)
        at fingerprint.DatabaseTest.main(DatabaseTest.java:14)

编辑：完整代码：

import java.sql.*;

public class DatabaseTest {
    public static void main(String [] args){
        try{
            Class.forName("oracle.jdbc.OracleDriver");
            Connection connection = null;
            connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "mk119", "mk119");
            Statement stmt = connection.createStatement();
            System.out.println("Connection created");
            stmt.close();
            connection.close();
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}
4

1 回答 1

3

根据此处提供的答案，检查以下内容（答案是相关的，可能是重复的问题）：

"检查\admin\NETWORK目录下的listener.ora文件是否有以下值：

XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
    )
  )

"

因此，请检查您的连接 url：主机、端口、sid，以确保其设置正确。

于 2012-12-28T19:33:16.453 回答