更改主机名方法
跟主机名相关的文件有两个分别是
[root@localhost ~]# cat /etc/hosts
[root@localhost ~]# cat /etc/sysconfig/network
修改方法两个文件都要修改
[root@localhost ~]# vi /etc/hosts
其中hosts里的主机名 对应一个ip 所以更改的同事要记住 分配一个ip
[root@localhost ~]# vi /etc/sysconfig/network
修改HOSTNAME=主机名
重启生效或者用hostname 主机名 命令来切换
执行netca报错解决方法
[oracle@node1 12:37:13|~]netca
Oracle Net Services Configuration:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
java.lang.NullPointerException
at oracle.ewt.lwAWT.BufferedApplet.(Unknown Source)
at oracle.net.ca.NetCA.(Unknown Source)
at oracle.net.ca.NetCA.main(Unknown Source)
Oracle Net Services configuration failed. The exit code is -1
图形界面打不开
解决方法切换到root用户下执行xhost +
oracle网络配置
三个配置文件 listener.ora、sqlnet.ora、tnsnames.ora ，都是放在$ORACLE_HOME/network/admin目录下。
三个配置文件 listener.ora、sqlnet.ora、tnsnames.ora ，都是放在$ORACLE_HOME/network/admin目录下。
监听进程的配置文件listenter.ora
查阅官方文档
|
[oracle@node1 20:52:14|/oracle/product/1020/network/admin]cat listener.ora
# listener.ora Network Configuration File: /oracle/product/1020/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=lgy)(PORT=1521))
)
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=PROD)
(SID_NAME=PROD)
(ORACLE_HOME=/oracle/product/1020)
)
(SID_DESC=
(GLOBAL_DBNAME=emrep)
(SID_NAME=emrep)
(ORACLE_HOME=/oracle/product/1020)
))
lsnr2 =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=lgy)(PORT=1526))
)
2.创建tnsnames.ora
参考官方文档
| Net Services Reference---->6 Local Naming Parameters (tnsnames.ora)---->6-1 |
[oracle@node1 20:52:14|/oracle/product/1020/network/admin]cat tnsnames.ora
# tnsnames.ora Network Configuration File: /oracle/product/1020/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
prod =
(description =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521))
)
(connect_data =
(server = dedicated)
(service_name = prod)
)
)
prod_s =
(description =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1526))
)
(connect_data =
(server = shared)
(service_name = prod)
)
)
emrep =
(description =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521))
)
(connect_data =
(server = dedicated)
(service_name = emrep)
)
)
racdb =
(description =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=rac1)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=rac2)(PORT=1521))
)
(connect_data =
(server = dedicated)
(service_name = racdb)
)
)
lsnr2 =
(description =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1526))
)
)
3.生成sqlnet.ora
[oracle@node1 20:52:14|/oracle/product/1020/network/admin]vi sqlnet.ora
加入NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
监听启动
lsnrctl stat
关闭监听
lsnrctl stop
查看监听状态
lsnrctl status
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