SuSE+Oracle11gR2
shutdown immediate停止数据库失败
1、kill掉oracle实例相关进程
ps -ef | grep ora_ | grep -v grep | awk ‘{print $2}‘ | xargs kill -9
2、清除oracle占用的共享内存段
ipcs -m | grep oracle | grep -v grep | awk ‘{print $2}‘ | xargs -n 1 ipcrm -m
3、清除oracle占用的共享信号量
ipcs -s | grep oracle | grep -v grep | awk ‘{print $2}‘ | xargs -n 1 ipcrm -s
原文：http://www.cnblogs.com/linyfeng/p/7496538.html