LINUX怎么远程连接ORACLE数据库

LINUX怎么远程连接ORACLE数据库？

1、安装client或者instantclient
2、配置$ORACLE_HOME/network/admin/tnsnames.ora
例如：
DB02 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.1.2)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = remotedb)
)
)
3、像remoteDB一样配置oracle环境变量
4、用sqlplus或者软件访问
例如：
sqlplus user/passwd@orcl