Oracle12c 在CentOS7.5.1804 Minimal中自启动

本文链接：https://blog.youkuaiyun.com/lc1010078424/article/details/81026809

[root@oracle ~]# cat /etc/rc.d/rc.local
#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.

翻译一下：

这个文件是为了兼容性的问题而添加的。
强烈建议创建自己的systemd服务或udev规则来在开机时运行脚本而不是使用这个文件。
与以前的版本引导时的并行执行相比较，这个脚本将不会在其他所有的服务后执行。
请记住，你必须执行“chmod +x /etc/rc.d/rc.local”来确保确保这个脚本在引导时执行。

查看一下/etc/rc.d/rc.local的权限

[root@oracle ~]# ll /etc/rc.d/rc.local
-rw-r--r-- 1 root root 571 7月  19 17:39 /etc/rc.d/rc.local

这里写图片描述
发现没有执行权限，按照说明的内容执行命令：

[root@oracle ~]# chmod +x /etc/rc.d/rc.local
[root@oracle ~]# ll /etc/rc.d/rc.local
-rwxr-xr-x 1 root root 571 7月  19 17:39 /etc/rc.d/rc.local

这里写图片描述
重启机器

[root@oracle ~]# reboot   #重启机器，确认结果

3、重启机器，确认自启动结果

以oracle用户，打开一个终端,su - oralce 切换用户的时候，中间要有-，而且-的两边有空格，才能正确切换到oracle用户，否则会出现用户为找到，用户不存在错误，或报lsnrctl start 命令未找到或者bash:lsnrctl:command not found.

[root@oracle ~]# su - oracle
上一次登录：四 7月 19 17:54:21 CST 2018pts/1 上
[oracle@oracle ~]$ lsnrctl status  # 查看监听状态

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 19-JUL-2018 17:56:13

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oracle)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production
Start Date                19-JUL-2018 17:52:43
Uptime                    0 days 0 hr. 4 min. 21 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /opt/oracle/12c/network/admin/listener.ora
Listener Log File         /opt/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully

查看oracle服务状态

[oracle@oracle ~]$ ps -ef |grep ora
oracle     1416      1  0 17:52 ?        00:00:00 /opt/oracle/12c/bin/tnslsnr LISTENER -inherit
root       1570   1505  0 17:54 pts/1    00:00:00 su oracle
oracle     1572   1570  0 17:54 pts/1    00:00:00 bash
root       1663   1635  0 17:55 pts/1    00:00:00 su - oracle
oracle     1664   1663  0 17:55 pts/1    00:00:00 -bash
oracle     1823   1664  0 17:58 pts/1    00:00:00 ps -ef
oracle     1824   1664  0 17:58 pts/1    00:00:00 grep --color=auto ora