How to uninstall Oracle Clusterware

Description of the phenomenon:

Oracle Clusterware, Oracle cluster software introduced in Oracle 10G/11G version, if you need to reinstall Oracle Clusterware (CRS) on a server, you must first send Oracle Clusterware (CRS) Remove clean.

Alarm information:

Due to the clean removal of Oracle Clusterware (CRS), the root.sh command failed to run when CRS was installed.

Reason Analysis:

OCR, voting files need to be reduced to the grid (clear 0) to be reused.

Processing process:

Convention: * Operation steps can only be performed at any one of these nodes, otherwise the

One, the script deletes automatically

Switch to root user

$Su –root

#cd $ORA _crs_home/install

1. Execute rootdelete.sh Script

#./rootdelete.sh

Getting local node name

NODE = rp5470b

Prko-2006:invalid node name:rp5470b

Stopping resources.

This could take several minutes.

Error while stopping resources. Possible CAUSE:CRSD is down.

Stopping Cluster synchronization Services.

Unable to communicate with the Cluster synchronization Services daemon.

Oracle CRS Stack is not running.

Oracle CRS stack is down now.

Removing script for Oracle Cluster Ready Services

Updating OCR file for downgrade

Cleaning up SCR settings in '/VAR/OPT/ORACLE/SCLS_SCR '

Cleaning up Network socket directories

2. Execute rootdeinstall.sh Script *

#./rootdeinstall.sh

Verifying existence of Ocr.loc file

Removing contents from OCR mirror device

2560+0 Records in

2560+0 Records out

Removing contents from OCR device

2560+0 Records in

2560+0 Records out

3. Uninstall CRS software using Oracle Universal Installer

$export display=10.69.24.124:0.0

$./runinstaller

Two, delete manually

1, stop all the services

(Database, ASM, monitor, Nodeapps)

2. Stop CRS

#Crsctl Stop CRS

#init. CRS Stop CRS

3. Delete files related to system startup

Sun:

Rm/etc/init.d/init.cssd

Rm/etc/init.d/init.crs

Rm/etc/init.d/init.crsd

Rm/etc/init.d/init.evmd

Rm/etc/rc3.d/k96init.crs

Rm/etc/rc3.d/s96init.crs

Rm-rf/var/opt/oracle/scls_scr

Rm-rf/var/opt/oracle/oprocd

Rm/etc/inittab.crs

Cp/etc/inittab.orig/etc/inittab

Linux:

rm/etc/oracle/*

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

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HP-UX:

Rm/sbin/init.d/init.cssd

Rm/sbin/init.d/init.crs

Rm/sbin/init.d/init.crsd

Rm/sbin/init.d/init.evmd

Rm/sbin/rc2.d/k960init.crs

Rm/sbin/rc2.d/k001init.crs

Rm/sbin/rc3.d/k960init.crs

Rm/sbin/rc3.d/s960init.crs

Rm-rf/var/opt/oracle/scls_scr

Rm-rf/var/opt/oracle/oprocd

Rm/etc/inittab.crs

Cp/etc/inittab.orig/etc/inittab

HP Tru64:

Rm/sbin/init.d/init.cssd

Rm/sbin/init.d/init.crs

Rm/sbin/init.d/init.crsd

Rm/sbin/init.d/init.evmd

Rm/sbin/rc3.d/k96init.crs

Rm/sbin/rc3.d/s96init.crs

Rm-rf/var/opt/oracle/scls_scr

Rm-rf/var/opt/oracle/oprocd

Rm/etc/inittab.crs

Cp/etc/inittab.orig/etc/inittab

IBM AIX:

Rm/etc/init.cssd

Rm/etc/init.crs

Rm/etc/init.crsd

Rm/etc/init.evmd

Rm/etc/rc.d/rc2.d/k96init.crs

Rm/etc/rc.d/rc2.d/s96init.crs

Rm-rf/etc/oracle/scls_scr

Rm-rf/etc/oracle/oprocd

Rm/etc/inittab.crs

Cp/etc/inittab.orig/etc/inittab

4. Kill the Legacy CRS process (or reboot the machine)

Ps-ef | grep CRS

Kill <crs Pid>

Ps-ef | grep EVM

Kill <EVM Pid>

Ps-ef | grep CSS

Kill <css Pid>

5. Delete temporary files

Rm-f/var/tmp/.oracle

Or

Rm-f/tmp/.oracle

6. Delete/etc/oracle/ocr.loc file

7. Uninstall CRS software using Oracle Universal Installer (refer to one, 3,)

8, erase the contents of OCR and voting disk *

DD If=/dev/zero OF=/DEV/VG02/ROCR1 bs=8192 count=2560

DD If=/dev/zero OF=/DEV/VG02/ROCR2 bs=8192 count=2560

DD If=/dev/zero of=/dev/vg02/rvoting1 bs=8192 count=12800

DD If=/dev/zero of=/dev/vg02/rvoting2 bs=8192 count=12800

DD If=/dev/zero of=/dev/vg02/rvoting3 bs=8192 count=12800

The deletion completes and the Oracle Clusterware can be reinstalled.

Suggestions and summaries:

Prior to reinstalling CRS, the original CRS must be cleaned up.

This article is from "Richard's notes-accumulate micro Cheng" blog, please be sure to keep this source http://zxf261.blog.51cto.com/701797/762044