linux下启动oralce和关闭oracle以及数据库实例化

1.登陆linux系统切换oracle用户,
[root@Zabbix_server dbhome_1]# su oralce
2.用管理员连到接数据库，启动数据库，启动完成后退出sql命令行，
[oracle@Zabbix_server dbhome_1]$ sqlplus /nolog
SQL*Plus: Release 11.2.0.1.0 Production on Sat Dec 2 21:31:28 2017
Copyright (c) 1982, 2009, Oracle.  All rights reserved.
SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup;
ORACLE instance started.
Total System Global Area  830930944 bytes
Fixed Size            2217912 bytes
Variable Size          532678728 bytes
Database Buffers      289406976 bytes
Redo Buffers            6627328 bytes
Database mounted.
Database opened.
SQL> exit
3.数据库实例化，该命令需在退出sql命令行之后执行，
lsnrctl start