预备：先关闭ORACLE数据库及监听，具体方法见：http://blog.csdn.net/zxnlmj/article/details/23096877
1、修改HOSTS文件，添加JTWF到本机IP地址的映射：
[root@JTWF home]# gedit /etc/hosts最后一行为添加的：
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 16.54.136.81 JTWF
2、修改/etc/sysconfig/network添加如下：
[root@JTWF home]# gedit /etc/sysconfig/network NETWORKING=yes HOSTNAME=JTWF
3、修改listener.ora
su oracle gedit /home/oracle/product/11.2/db_1/network/admin/listener.ora
修改HOST由HOST=localhost改为HOST=JTWF（随意）：
# listener.ora Network Configuration File: /home/oracle/product/11.2/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = JTWF)(PORT = 1521))
)
)
ADR_BASE_LISTENER = /home/oracle
4、tnsnames.ora文件不修改也可，我没修改
gedit /home/oracle/product/11.2/db_1/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /home/oracle/product/11.2/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)