1、当登陆时提示“ORA-03113:通信通道的文件结束”时：
解决方案：
需在X:\oraclexe\app\oracle\product\10.2.0\server\NETWORK\ADMIN\sqlnet.ora文件中，修改
SQLNET.AUTHENTICATION_SERVICES = (NTS) 将NTS改为NONE 重启即可。
2、ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务 ：
解决方案：
修改listener.ora：
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = XE)
(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
(SID_NAME = XE)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = LightPC)(PORT = 1521))
)
)
3、ORA-12560:TNS:protocol adapter error
解决方案：
登陆时 SYS@LIGHT AS SYSDBA常见ORACLE错误，及解决方案