SQL* Plus主机字符串是需要输入SID
也就是在在 oracle\product\10.2.0\db_1\NETWORK\ADMIN 的TNSNAMES.ORA中的

GSGET =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.127.128)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = gsget)
)
)

的GSGET