--手动卸载
rm -rf /etc/oraInst.loc
rm -rf /opt/ORCLfmap
rm -rf /etc/ora*
rm -rf /tmp/.oracle
rm -rf /var/tmp/.oracle
rm -f /etc/inittab.crs
cp /etc/inittab.no_crs /etc/inittab
rm -rf /etc/init.d/init.ohasd
rm -rf /etc/init.d/ohasd
rm -rf /tmp/CVU_*
rm -rf /tmp/OraInsta*
rm -rf /opt/ORCLfmap
rm -rf /usr/local/bin/dbhome
rm -rf /usr/local/bin/oraenv
rm -rf /usr/local/bin/coraenv
cd /u01/app/12.2.0/grid/
rm -rf /u01/app/12.2.0/grid/
rm -rf /u01/app/grid/*
rm -rf /u01/app/oraInventory/*
chown -R grid:oinstall /u01
chown oracle:oinstall /u01/app/oracle
chmod -R 775 /u01/
dd if=/dev/zero of=/dev/asm-ocr1 bs=8192 count=1000
dd if=/dev/zero of=/dev/asm-ocr2 bs=8192 count=1000
dd if=/dev/zero of=/dev/asm-ocr3 bs=8192 count=1000
dd if=/dev/zero of=/dev/asm-migr bs=8192 count=1000
--安装前预先检查
su - grid
cd $ORACLE_HOME
./runcluvfy.sh comp ssa -n oadb01,oadb02 -s /dev/asm-ocr1,/dev/asm-
ocr2,/dev/asm-ocr3 -verbose
./runcluvfy.sh stage -pre crsinst -n oadb01,oadb02 -verbose
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