我的PLSQL不好用，提示 错误时

我分两步干的：

1：用户名，密码，不写，提示错误后，cancel登陆

tools->preference左侧选->connection,右侧 Home 里面选择OraDb10g_home1。

 

2：找到%oracle_home%NETWORK/ADMIN/LISTENER.ORA

修改如下：添加一段代码

# listener.ora Network Configuration File: D:/oracle/oracle10g/network/admin/listener.ora

# Generated by Oracle configuration tools.

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (SID_NAME = PLSExtProc)

      (ORACLE_HOME = D:/oracle/oracle10g)

      (PROGRAM = extproc)

    )

     (SID_DESC =

    (GLOBAL_DBNAME = ORCL)

    (ORACLE_HOME = D:/oracle/oracle10g)  

    (SID_NAME = ORCL)

    ) 

  )

LISTENER =

  (DESCRIPTION_LIST =

    (DESCRIPTION =

      (ADDRESS_LIST =

        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))

      )

      (ADDRESS_LIST =

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

      )

    )

  )