#!/bin/ksh

db=`srvctl config database`
echo “db=$db”
nl=`srvctl config databaes -d $db | awk ‘{print $2}’`
echo “nl=$nl”

srvctl stop database -d $db
srvctl remove database -d $db -f

for n in $nl
do
echo “stop and remove instance on instance $n”
srvctl stop instance -d $db -i $n
srvctl remove instance -d $db -i $n -f

done
echo “stop and remove database instance done”

2. stop and drop asm instance

#!/bin/ksh

nl=`olsnodes`

for n in $nl
do
srvctl stop asm -n $n
srvctl remove asm -n $n

done
echo “stop and remove asm done”

3. stop and drop listener

lsnr=`crs_stat |grep lsnr | cut -d= -f2`
for l in $lsnr
do
crs_stop $l
crs_unregister $l

done
echo “stop and remove listener done”

4. stop crs stack and clean related resource

        这里需要注意的是，这里的操作必须一个节点一个节点的执行，不能并行操作，就如同安装的时候执行root.sh一样！切记切记.

on local node:
$ORA_CRS_HOME/install/rootdelete.sh local nosharedvar nosharedhome

on remote nodes:
$ORA_CRS_HOME/install/rootdelete.sh remote nosharedvar nosharedhome [Page]

5. clean ocr

only execute this on local node:
$ORA_CRS_HOME/install/rootdeinstall.sh

6. change permission and remove directory
        这里之所以要更改权限是因为安装后期运行root.sh的时候会把ORA_CRS_HOME的父目录改为root权限，下次安装的时候必须修改为oracle用户

chown -Rf ractest:oinstall $ORA_CRS_HOME/../../../
rm -Rf $ORA_CRS_HOME;

rm -Rf $ORACLE_BASE/../oraInventory;

 rm -Rf $ORACLE_BASE;

rm -Rf /var/opt/oracle;

rm -Rf /var/tmp/.oracle/*;

rm -Rf /tmp/*;