oracle ocr改造,Oracle RAC 重建 OCR 和 Voting disk

严劲

2023-12-01

OCR

和 Voting disk 对RAC 来说是非常重要的。

OCR记录节点成员的配置信息,如database、ASM、instance、listener、VIP等CRS资源的配置信息。Voting disk记录节点成员信息，如包含哪些节点成员、节点的添加删除信息记录。在日常维护中需要对他们进行备份。当然OCR 也会自动备份。当OCR或者Voting disk 出现问题时，有备份的话就使用备份来恢复。当没有备份的话就只能重建了。

官方有关OCR 和

Voting disk重建的文档参考：

How to Recreate OCR / Voting Disk Accidentally Deleted [ID

399482.1]

OCR 和Voting disk 的备份与恢复参考：

Oracle 10g RAC OCR 和 VotingDisk 的备份与恢复

先对Voting disk 和OCR做一个备份。

[root@rac1 bin]#

./crs_stat -t

Name

Type

Target

State

Host

------------------------------------------------------------

ora.orcl.db

application

ONLINE

rac2

ora....oltp.cs

application

ONLINE

rac2

ora....cl1.srv

application

ONLINE

rac1

ora....cl2.srv

application

ONLINE

rac2

ora....l1.inst

application

ONLINE

rac1

ora....l2.inst

application

ONLINE

rac2

ora....SM1.asm

application

ONLINE

rac1

ora....C1.lsnr

application

ONLINE

rac1

ora.rac1.gsd

application

ONLINE

rac1

ora.rac1.ons

application

ONLINE

rac1

ora.rac1.vip

application

ONLINE

rac1

ora....SM2.asm

application

ONLINE

rac2

ora....C2.lsnr

application

ONLINE

rac2

ora.rac2.gsd

application

ONLINE

rac2

ora.rac2.ons

application ONLINE

ONLINE

rac2

ora.rac2.vip

application

ONLINE

rac2

[root@rac1 bin]#

./crsctl query css votedisk

/dev/raw/raw3

/dev/raw/raw4

/dev/raw/raw5

located 3

votedisk(s)

[root@rac1 bin]#

dd if=/dev/raw/raw3 of=/u01/votingdisk.bak

401562+0 records

out

205599744 bytes (206 MB)

copied, 1685.53 seconds, 122 kB/s

[root@rac1 u01]#

cd /u01/app/oracle/product/crs/bin/

[root@rac1 bin]#

./ocrconfig -export /u01/ocr.bak

[root@rac1 bin]#

ll /u01

total 202132

drwxrwxrwx 3 oracle

oinstall

4096 Nov 30 17:08 app

-rwxr-xr-x 1 oracle

oinstall

1043097 Nov 30 18:59 clsfmt.bin

-rw-r--r-- 1 root root

103141 Dec 2 08:38

ocr.bak

-rwxr-xr-x 1 oracle

oinstall

5542 Nov 30 19:00 srvctl

-rw-r--r-- 1 root root

205599744 Dec 2 08:45

votingdisk.bak

重建具体操作如下：

1. 停止所有节点的CRS

[root@rac1 bin]# ./crsctl stop

crs

Stopping

resources.

Successfully stopped CRS

resources

Stopping

CSSD.

Shutting down CSS

daemon.

Shutdown request successfully

issued.

2. 备份每个节点的Clusterware Home

[root@rac1 bin]# cd

/u01/app/oracle/product/

[root@rac1 product]#

10.2.0 crs

[root@rac1 product]# cp crs

crs_back

3. 在所有节点执行/install/rootdelete.sh

命令

[root@rac1

install]# pwd

/u01/app/oracle/product/crs/install

[root@rac1

install]# ./rootdelete.sh

Shutting down Oracle Cluster

Ready Services (CRS):

Stopping

resources.

Error while stopping

resources. Possible cause: CRSD is down.

Stopping

CSSD.

Unable to communicate with the

CSS daemon.

Shutdown has begun. The

daemons should exit soon.

Checking to see if Oracle CRS

stack is down...

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

'/etc/oracle/scls_scr'

4. 在执行安装的节点执行/install/rootdeinstall.sh命令

因为我是在rac1节点上执行安装的，所以也在该节点执行该命令。只需要在该节点执行就可以了。

[root@rac1

install]# sh

/u01/app/oracle/product/crs/install/rootdeinstall.sh

Removing

contents from OCR mirror device

2560+0 records

out

10485760 bytes (10 MB) copied,

108.972 seconds, 96.2 kB/s

Removing contents from OCR

device

2560+0 records

out

10485760 bytes (10 MB) copied,

89.2502 seconds, 117 kB/s

5. 检查CRS进程，如果没有返回值，继续下一步

[root@rac1 install]# ps -e | grep -i

'ocs[s]d'

[root@rac1 install]# ps -e |

grep -i 'cr[s]d.bin'

[root@rac1 install]# ps -e |

grep -i 'ev[m]d.bin'

6. 在安装节点(第4步中的节点)执行/root.sh命令

[root@rac1 crs]#

/u01/app/oracle/product/crs/root.sh --注意，是root用户。

WARNING: directory

'/u01/app/oracle/product' is not owned by root

WARNING: directory

'/u01/app/oracle' is not owned by root

WARNING: directory '/u01/app'

is not owned by root

WARNING: directory '/u01' is

not owned by root

Checking to see if Oracle CRS

stack is already configured

Setting the permissions on OCR

backup directory

Setting up NS

directories

Oracle Cluster Registry

configuration upgraded successfully

WARNING: directory

'/u01/app/oracle/product' is not owned by root

WARNING: directory

'/u01/app/oracle' is not owned by root

WARNING: directory '/u01/app'

is not owned by root

WARNING: directory '/u01' is

not owned by root

assigning default hostname

rac1 for node 1.

assigning default hostname

rac2 for node 2.

Successfully accumulated

necessary OCR keys.

Using ports: CSS=49895

CRS=49896 EVMC=49898 and EVMR=49897.

node

interconnect name>

node 1: rac1 rac1-priv

rac1

node 2: rac2 rac2-priv

rac2

Creating OCR keys for user

'root', privgrp 'root'..

Operation

successful.

Now formatting voting device:

/dev/raw/raw3

Now formatting voting device:

/dev/raw/raw4

Now formatting voting device:

/dev/raw/raw5

Format of 3 voting devices

complete.

Startup will be queued to init

within 90 seconds.

Adding daemons to

inittab

Expecting the CRS daemons to

be up within 600 seconds.

CSS is active on these

nodes.

rac1

CSS is inactive on these

nodes.

rac2

Local node checking

complete.

Run root.sh on remaining nodes

to start CRS daemons.

7. 在剩下的节点执行/root.sh命令

[root@rac2 crs]#

/u01/app/oracle/product/crs/root.sh

WARNING: directory

'/u01/app/oracle/product' is not owned by root

WARNING: directory

'/u01/app/oracle' is not owned by root

WARNING: directory '/u01/app'

is not owned by root

WARNING: directory '/u01' is

not owned by root

Checking to see if Oracle CRS

stack is already configured

Setting the permissions on OCR

backup directory

Setting up NS

directories

Oracle Cluster Registry

configuration upgraded successfully

WARNING: directory

'/u01/app/oracle/product' is not owned by root

WARNING: directory

'/u01/app/oracle' is not owned by root

WARNING: directory '/u01/app'

is not owned by root

WARNING: directory '/u01' is

not owned by root

clscfg: EXISTING configuration

version 3 detected.

clscfg: version 3 is 10G

Release 2.

assigning default hostname

rac1 for node 1.

assigning default hostname

rac2 for node 2.

Successfully accumulated

necessary OCR keys.

Using ports: CSS=49895

CRS=49896 EVMC=49898 and EVMR=49897.

node

interconnect name>

node 1: rac1 rac1-priv

rac1

node 2: rac2 rac2-priv

rac2

clscfg: Arguments check out

successfully.

NO KEYS WERE WRITTEN. Supply

-force parameter to override.

-force is destructive and will

destroy any previous cluster

configuration.

Oracle Cluster Registry for

cluster has already been initialized

Startup will be queued to init

within 90 seconds.

Adding daemons to

inittab

Expecting the CRS daemons to

be up within 600 seconds.

CSS is active on these

nodes.

rac1

rac2

CSS is active on all

nodes.

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Waiting for the Oracle CRSD

and EVMD to start

Oracle CRS stack installed and

running under init(1M)

Running

vipca(silent) for configuring nodeapps

Error 0(Native:

listNetInterfaces:[3])

[Error 0(Native:

listNetInterfaces:[3])]

这里报错了。 root.sh 在最后一个节点执行时会调用vipca命令。

这里因为网络接口没有配置好。所以执行失败了。我们配置一下接口，在Xmanager里，用root用户，手工运行vipca命令即可。

[root@rac1 bin]# ./oifcfg

getif -- 没有返回接口信息

[root@rac1 bin]# ./oifcfg

iflist

eth1 192.168.6.0

virbr0 192.168.122.0

eth0 192.168.6.0

[root@rac1 bin]# ./oifcfg setif -global

eth0/192.168.6.0:public

-- 注意IP 最后是0

[root@rac1 bin]# ./oifcfg

setif -global eth1/192.168.6.0:cluster_interconnect

[root@rac1 bin]# ./oifcfg

getif -- 验证配置

eth0 192.168.6.0 global public

eth1 192.168.6.0 global cluster_interconnect

[root@rac1

bin]#

配置玩后，随便在一个节点用root用户运行一下vipca命令就可以了。

这个是有窗口的。需要X 支持。所有用X manager。

其他工具也可以。能运行就可以了。执行完后nodeapps的VIP,ONS,GSD就创建完成了。

[root@rac1 bin]#

./crs_stat -t

Name

Type

Target

State

Host

------------------------------------------------------------

ora.rac1.gsd

application

ONLINE

rac1

ora.rac1.ons

application

ONLINE

rac1

ora.rac1.vip

application

ONLINE

rac1

ora.rac2.gsd

application

ONLINE

rac2

ora.rac2.ons

application

ONLINE

rac2

ora.rac2.vip

application

ONLINE

rac2

8.配置监听

(netca)

重建Listener会将监听器信息写入OCR)

[oracle@rac1 ~]$ mv $TNS_ADMIN/listener.ora

/tmp/listener.ora.original

[oracle@rac2 ~]$ mv $TNS_ADMIN/listener.ora

/tmp/listener.ora.original

然后在X

Manager里，用oracle用户执行netca命令。

这个也是可视化的窗口。

[root@rac1 bin]#

./crs_stat -t

Name

Type

Target

State

Host

------------------------------------------------------------

ora....C1.lsnr

application

ONLINE

rac1

ora.rac1.gsd

application

ONLINE

rac1

ora.rac1.ons

application

ONLINE

rac1

ora.rac1.vip

application

ONLINE

rac1

ora....C2.lsnr

application

ONLINE

rac2

ora.rac2.gsd

application

ONLINE

rac2

ora.rac2.ons

application

ONLINE

rac2

ora.rac2.vip

application

ONLINE

rac2

9. 配置ONS (racgons)

10g 下使用：

/install/racgons

add_config hostname1:port hostname2:port

[oracle@rac1 bin]$

pwd

/u01/app/oracle/product/crs/bin

[oracle@rac1

bin]$ racgons add_config rac1:6251

rac2:6251

11g 使用：

/install/onsconfig

add_config hostname1:port hostname2:port

[oracle@rac1

bin]$ onsconfig add_config rac1:6251

rac2:6251

验证配置：

[oracle@rac1

bin]$ onsctl ping

Number of onsconfiguration

retrieved, numcfg = 2

onscfg[0]

{node = rac1, port =

6251}

Adding remote host

rac1:6251

onscfg[1]

{node = rac2, port =

6251}

Adding remote host

rac2:6251

ons is running

...

如果没有启动，用 onsctl start 启动一下即可。

10. 添加其他资源到OCR

注意，注册用的名字和要之前安装的一样。区分大小写。

ASM

语法：srvctl add asm -n

-i -o

[oracle@rac1 bin]$ echo

$ORACLE_HOME

/u01/app/oracle/product/10.2.0/db_1

[oracle@rac1 bin]$ srvctl add

asm -n rac1 -i +ASM1 -o $ORACLE_HOME

[oracle@rac1 bin]$ srvctl add

asm -n rac2 -i +ASM2 -o

/u01/app/oracle/product/10.2.0/db_1

DATABASE

语法：srvctl add database -d

-o

[oracle@rac1 bin]$ srvctl add

database -d orcl -o

/u01/app/oracle/product/10.2.0/db_1

INSTANCE

语法：srvctl add instance -d

-i

-n

[oracle@rac1 bin]$ srvctl add

instance -d orcl -i orcl1 -n rac1

[oracle@rac1 bin]$ srvctl add

instance -d orcl -i orcl2 -n rac2

SERVICE

语法：srvctl add service -d

-s

-r

-P

-r preferred_list 是首先使用的实例的列表，还可是用-a 表示备用实例

TAF_policy可设置为NONE,BASIC,PRECONNECT

[oracle@rac1 bin]$ srvctl add

service -d orcl -s oltp -r orcl1,orcl2 -P BASIC

添加完了我们来查看一下：

[oracle@rac1 bin]$ crs_stat -t

NameTypeTargetStateHost

------------------------------------------------------------

ora.orcl.dbapplicationOFFLINEOFFLINE

ora....oltp.cs applicationOFFLINEOFFLINE

ora....cl1.srv applicationOFFLINEOFFLINE

ora....cl2.srv applicationOFFLINEOFFLINE

ora....l1.inst applicationOFFLINEOFFLINE

ora....l2.inst applicationOFFLINEOFFLINE

ora....SM1.asm applicationOFFLINEOFFLINE

ora....C1.lsnr applicationONLINEONLINErac1

ora.rac1.gsdapplicationONLINEONLINErac1

ora.rac1.onsapplicationONLINEONLINErac1

ora.rac1.vipapplicationONLINEONLINErac1

ora....SM2.asm applicationOFFLINEOFFLINE

ora....C2.lsnr applicationONLINEONLINErac2

ora.rac2.gsdapplicationONLINEONLINErac2

ora.rac2.onsapplicationONLINEONLINErac2

ora.rac2.vipapplicationONLINEONLINErac2

11.启动资源和检查

[oracle@rac1 bin]$ srvctl

start asm -n rac1

[oracle@rac1 bin]$ srvctl

start asm -n rac2

[oracle@rac1 bin]$ srvctl

start database -d orcl

[oracle@rac1 bin]$ srvctl

start service -d orcl

[root@rac1 bin]# ./crs_stat -t

NameTypeTargetStateHost

------------------------------------------------------------

ora.orcl.dbapplicationONLINEONLINErac1

ora....oltp.cs applicationONLINEONLINErac2

ora....cl1.srv applicationONLINEONLINErac1

ora....cl2.srv applicationONLINEONLINErac2

ora....l1.inst applicationONLINEONLINErac1

ora....l2.inst applicationONLINEONLINErac2

ora....SM1.asm applicationONLINEONLINErac1

ora....C1.lsnr applicationONLINEONLINErac1

ora.rac1.gsdapplicationONLINEONLINErac1

ora.rac1.onsapplicationONLINEONLINErac1

ora.rac1.vipapplicationONLINEONLINErac1

ora....SM2.asm applicationONLINEONLINErac2

ora....C2.lsnr applicationONLINEONLINErac2

ora.rac2.gsdapplicationONLINEONLINErac2

ora.rac2.onsapplicationONLINEONLINErac2

ora.rac2.vipapplicationONLINEONLINErac2

[oracle@rac1 bin]$ cluvfy

stage -post crsinst -n rac1,rac2

Performing post-checks for

cluster services setup

Checking node

reachability...

Node reachability check passed

from node "rac1".

Checking user

equivalence...

User equivalence check passed

for user "oracle".

Checking Cluster manager

integrity...

Checking CSS

daemon...

Daemon status check passed for

"CSS daemon".

Cluster manager integrity

check passed.

Checking cluster

integrity...

Cluster integrity check

passed

Checking OCR

integrity...

Checking the absence of a

non-clustered configuration...

All nodes free of

non-clustered, local-only configurations.

Uniqueness check for OCR

device passed.

Checking the version of

OCR...

OCR of correct Version "2"

exists.

Checking data integrity of

OCR...

Data integrity check for OCR

passed.

OCR integrity check

passed.

Checking CRS

integrity...

Checking daemon

liveness...

Liveness check passed for "CRS

daemon".

Checking daemon

liveness...

Liveness check passed for "CSS

daemon".

Checking daemon

liveness...

Liveness check passed for "EVM

daemon".

Checking CRS

health...

CRS health check

passed.

CRS integrity check

passed.

Checking node application

existence...

Checking existence of VIP node

application (required)

Check

passed.

Checking existence of ONS node

application (optional)

Check

passed.

Checking existence of GSD node

application (optional)

Check

passed.

Post-check for cluster

services setup was successful.

[oracle@rac1

bin]$

重建结束。

oracle ocr改造,Oracle RAC 重建 OCR 和 Voting disk

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