ORA-12518 TNS:监听程序无法分发客户机连接的解决办法

修改监听配置文件listener.ora 

修改前：

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (SID_NAME = PLSExtProc)

      (ORACLE_HOME = D:oracleproduct10.2.0db_1)

      (PROGRAM = extproc)

    )

  )

LISTENER =

  (DESCRIPTION_LIST =

    (DESCRIPTION =

      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))

      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))

    )

  )

修改后，红色部分为增加部分

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (SID_NAME = PLSExtProc)

      (ORACLE_HOME = E:oracleproduct10.2.0db_1)

      (PROGRAM = extproc)

    )

    (SID_DESC =

      (SID_NAME = orcl)

      (ORACLE_HOME = E:oracleproduct10.2.0db_1)

    )

  )

LISTENER =

  (DESCRIPTION_LIST =

    (DESCRIPTION =

      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))

    )

    (DESCRIPTION =

      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))

    )

  )