Oracle RAC无备份情况恢复ocr和olr

前段时间写了RAc中ocr存在备份的情况下如何恢复，今天写一下在没有备份情况下如何去重建ocr和olr呢？在11G中ocr的asm磁盘组被用户

今天是2014-04-01，忙碌了一天终于有时间写点东西了。前段时间写了RAc中ocr存在备份的情况下如何恢复，今天写一下在没有备份情况下如何去重建ocr和olr呢？

最大的悲剧莫过于数据库坏了备份没了。让我想起了前几年流行的一句话：“最大的悲剧是人活着，钱没了”。总之备份重于一切。

情景介绍：

在11G中ocr的asm磁盘组被用户不小心删了且所有备份都误删，olr呢也损坏了。至此悲剧重演。

恢复过程：（其实就是使用root.sh重建ocr的过程，重建之后可能需要重新注册相关资源如listener or database 实例等！）

1、清空所有节点cluster配置信息：（11G中存在rootcrs.sh脚本，该脚本默认存在于$GRID_HOME/crs/install）。

注，该脚本需要在root下执行，，否则会有错误提示

[grid@rac-one install]$ ./rootcrs.pl
You must be logged in as root to run this script.
Log in as root and rerun this script.
2014-04-01 17:08:12: Not running as authorized user
Insufficient privileges to execute this script.
root or administrative privileges needed to run the script.

了解该脚本的功能可以查看-help。如升级、回退、重新配置等待》

[root@rac-two install]# ./rootcrs.pl -help
Usage:
rootcrs.pl [-verbose] [-upgrade [-force] | -patch]
[-paramfile ]
[-deconfig [-deinstall] [-keepdg] [-force] [-lastnode]]
[-downgrade -oldcrshome -version [-force] [-lastnode]]
[-unlock [-crshome ] [-nocrsstop]]
[-init]

Options:
-verbose Run this script in verbose mode
-upgrade Oracle HA is being upgraded from previous version
-patch Oracle HA is being upgraded to a patch version
-paramfile Complete path of file specifying HA parameter values
-lastnode Force the node this script is executing on to be considered
as the last node of deconfiguration or downgrade, and perform
actions associated with deconfiguring or downgrading the
last node
-downgrade Downgrade the clusterware
-version For use with downgrade; special handling is required if
downgrading to 9i. This is the old crs version in the format
A.B.C.D.E (e.g 11.1.0.6.0).
-deconfig Remove Oracle Clusterware to allow it to be uninstalled or reinstalled
-force Force the execution of steps in delete or dwongrade that cannot
be verified to be safe
-deinstall Reset the permissions on CRS home during de-configuration
-keepdg Keep existing diskgroups during de-configuration
-unlock Unlock CRS home
-crshome Complete path of crs home. Use with unlock option
-oldcrshome For use with downgrade. Complete path of the old crs home
-nocrsstop used with unlock option to reset permissions on an inactive grid home
-init Reset the permissions of all files and directories under CRS home

If neither -upgrade nor -patch is supplied, a new install is performed

To see the full manpage for this program, execute:
perldoc rootcrs.pl

[root@rac-two install]#

在root下清除所有节点cluster 信息：

节点2：

[grid@rac-one install]$ su
Password:
[root@rac-one install]# ./rootcrs.pl -deconfig -force
Using configuration parameter file: ./crsconfig_params
Network exists: 1/192.168.4.0/255.255.255.0/eth0, type static
VIP exists: /rac-one-vip/192.168.4.113/192.168.4.0/255.255.255.0/eth0, hosting node rac-one
VIP exists: /rac-two-vip/192.168.4.114/192.168.4.0/255.255.255.0/eth0, hosting node rac-two
GSD exists
ONS exists: Local port 6100, remote port 6200, EM port 2016
CRS-2673: Attempting to stop 'ora.registry.acfs' on 'rac-one'
CRS-2677: Stop of 'ora.registry.acfs' on 'rac-one' succeeded
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac-one'
CRS-2673: Attempting to stop 'ora.crsd' on 'rac-one'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'rac-one'
CRS-2673: Attempting to stop 'ora.oc4j' on 'rac-one'
CRS-2673: Attempting to stop 'ora.GIDG.dg' on 'rac-one'
CRS-2673: Attempting to stop 'ora.DATADG.dg' on 'rac-one'
CRS-2677: Stop of 'ora.DATADG.dg' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.GIDG.dg' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'rac-one'
CRS-2677: Stop of 'ora.oc4j' on 'rac-one' succeeded
CRS-2672: Attempting to start 'ora.oc4j' on 'rac-two'
CRS-2677: Stop of 'ora.asm' on 'rac-one' succeeded
CRS-2676: Start of 'ora.oc4j' on 'rac-two' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'rac-one' has completed
CRS-2677: Stop of 'ora.crsd' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.crf' on 'rac-one'
CRS-2673: Attempting to stop 'ora.ctssd' on 'rac-one'
CRS-2673: Attempting to stop 'ora.evmd' on 'rac-one'
CRS-2673: Attempting to stop 'ora.asm' on 'rac-one'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac-one'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac-one'
CRS-2677: Stop of 'ora.crf' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.evmd' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.asm' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'rac-one'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'rac-one'
CRS-2677: Stop of 'ora.cssd' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'rac-one'
CRS-2677: Stop of 'ora.drivers.acfs' on 'rac-one' succeeded
CRS-2677: Stop of 'ora.gipcd' on 'rac-one' succeeded
CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac-one'
CRS-2677: Stop of 'ora.gpnpd' on 'rac-one' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac-one' has completed
CRS-4133: Oracle High Availability Services has been stopped.
Removing Trace File Analyzer
Successfully deconfigured Oracle clusterware stack on this node
[root@rac-one install]#

节点1，因为我的RAC是双节点的，那么在清除最后一个使用lastnode参数：