1、 [oracle@aoracle admin]$ vi tnsnames.ora
catalog =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.190.140)(PORT = 1521))
)
(CONNECT_DATA =
(SID = ORCL)
)
)
2、[oracle@aoracle ~]$ tnsping catalog
看是否能连上。