1、以sys登录数据C:\Users\administrator.CLASSROOM>sqlplus /nologSQL>conn / as sysdba;
2、2)启动数据库(nomount)SQL>startup nomount;
3、通过spfile创建pfile文件(路径在database下)SQL> create pfile='D:\APP\ADMINISTRATOR\PRODUCT\11.2.0\DBHOME_1\DATABASE\INIT.ORA' from spfile;
4、从pfile启动数据库SQL> startup nomount pfile='D:\APP\ADMINISTRATOR\PRODUCT\11.2.0\DBHOME_1\DATABASE\INIT.ORA'
5、关闭数据库,重启数据库,大功告成。SQL> shutdown immediate;SQL> startup;