1，删除软件安装目录
rm -rf /u01/app
2，删除以下目录内容
rm -rf /tmp/.oracle
rm -rf /tmp/*
rm -rf /tmp/ora*
rm -rf /var/tmp/Ora*
rm -rf /var/tmp/.oracle
rm -rf /etc/ora*
rm -f /etc/init.d/init.cssd
rm -f /etc/init.d/init.crs
rm -f /etc/init.d/init.crsd
rm -f /etc/init.d/init.evmd
rm -f /etc/rc2.d/K96init.crs
rm -f /etc/rc2.d/S96init.crs
rm -f /etc/rc3.d/K96init.crs
rm -f /etc/rc3.d/S96init.crs
rm -f /etc/rc5.d/K96init.crs
rm -f /etc/rc5.d/S96init.crs
rm -Rf /etc/oracle/scls_scr
rm -f /etc/inittab.crs
cp /etc/inittab.orig /etc/inittab
3，杀进程
ps -ef | grep crs
kill <crs pid>
ps -ef | grep evm
kill <evm pid>
ps -ef | grep css
kill <css pid>
4，清除OCR和voting
dd if=/dev/zero of=XXX bs=8192 count=2560
dd if=/dev/zero of=XXX bs=8192 count=12800