Question

我的代码如下。

java.sql.DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
java.sql.Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "ims", "_ims");

异常发生在第二行，如下所示。

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"

异常是什么意思？我的代码有什么问题？

Girish编辑

listener.ora文件：

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
      (PROGRAM = extproc)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
      (ADDRESS = (PROTOCOL = TCP)(HOST = Girish-PC)(PORT = 1521))
    )
  )

DEFAULT_SERVICE_LISTENER = (XE)

tnsnames.ora文件：

XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = Girish-PC)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
    )
  )

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

ORACLR_CONNECTION_DATA = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE)) 
    ) 
    (CONNECT_DATA = 
      (SID = CLRExtProc) 
      (PRESENTATION = RO) 
    ) 
  )

在上面，给出了tnsnames.ora和listener.ora文件的内容。

Answer 1

我已经用新工具取代了我的oracle **。jar。我觉得我的旧oracle **罐子有问题。感谢大家的支持。

Answer 2

这意味着给定的sid（xe）不可用。

侦听器无法在listener.ora或tnsnames.ora文件中识别或找到它。请检查文件并验证是否存在xe sid的条目。

如果上述文件中存在条目，则检查侦听器是否正在运行。

**更新**

使用以下jdbc url

JDBC：预言：瘦：@myserver：1521 / XE

Answer 3

你正在使用像

这样的刺痛

jdbc:oracle:thin:@myserver:1521:XE

尝试

jdbc:oracle:thin:@myserver:1521/XE

因为我已经面临同样的问题。有了这个，我解决了它。

确保OracleServiceXE，OracleXETNSListener正在运行。

Still facing issue

将java连接到oracle 10g

3 个答案: