SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory

ywg

发现oracle安装定义的家目录是在/u01/app/oracle/product/11.1.0/db_1目录下的　　
u01目录是root用户的权限，在切回到root用户，执行如下命令：
　　
[root@localhost ~]# cd $ORACLE_HOME
　　
[root@localhost dbhome_1]# pwd
　　
/u01/app/oracle/product/11.2.0/dbhome_1
　　
[root@localhost dbhome_1]# sqlplus / as sysdba
　　
或是
　　
[root@localhost dbhome_1]# cd bin
　　
[root@localhost dbhome_1]# pwd
　　
/u01/app/oracle/product/11.2.0/dbhome_1/bin
　　
[root@localhost bin]# ./sqlplus / as sysdba
　　
SQL*Plus: Release 11.2.0.4.0 Production on Thu Oct 12 17:20:48 2017
　　
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
　　
Enter password:
　　
Connected to:
　　
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
　　
With the Partitioning, OLAP, Data Mining and Real Application Testing options
　　
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