1、在Linux服务器的图形界面下，打开一个终端，输入如下的命令；xhost +2、切换到oracle 用户，使用如下的命令：su - oracle3、指
1、在Linux服务器的图形界面下，打开一个终端，输入如下的命令；
xhost +
2、切换到Oracle 用户，使用如下的命令：
su - oracle
3、指定数据库实例的变量与值，假设要建立的数据实例的SID是test
export ORACLE_SID=test
4、使用DBCA工具建立实例
dbca
5、手工启动两个实例
su - oracle
lsnrctl start
－－假设一个实例是itsm、另外一个是test
export ORACLE_SID=itsm
sqlplus / as sysdba
startup
quit
export ORACLE_SID=test
sqlplus / as sysdba
startup
quit
6、自动启动，可以在/etc/rc.local中设置，增加如下的内容
--启动默认的数据库实例
su - oracle sqlplus / as sysdba
startup
quit
EOF
--启动第二个数据库实例
su - oracle sqlplus / as sysdba
startup
quit
EOF
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