检察一下../oracle/ora92/network/admin/tnsnames.ora文件中
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = fred)(PORT = 1521))----此处改为你的电脑名字
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
../oracle/ora92/network/admin/listener.ora这个文件也改一下
再用tnsping orcl试试