Oracle12cRAC修改SCAN配置

 看下12c中對SCAN 的修改，修改包括2個方面：

（1） 修改SCAN 的名稱。

（2） 修改SCAN 的IP 地址。

 

如果使用的是/etc/hosts裡的SCAN，那麼只需要修改hosts文件就可以，如果使用DNS的，就需要從DNS 來修改，我這裡使用DNS的RAC環境，所以修改DNS為例，進行示范。

 

另外，修改會停止SCAN，所以如果數據庫是用SCAN 連鏈接的，就需要停部分操作，這部分可以轉換到用VIP連鏈接，修改期間，數據庫可以正常運行，其他操作不受影響。

 

1 當前環境

 

[grid@rac1 ~]$ crs_stat -t

Name Type Target State Host

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

ora....SM.lsnr ora....er.type ONLINE ONLINE rac1

ora....ER.lsnr ora....er.type ONLINE ONLINE rac1

ora....N1.lsnr ora....er.type ONLINE ONLINE rac2

ora....N2.lsnr ora....er.type ONLINE ONLINE rac1

ora....N3.lsnr ora....er.type ONLINE ONLINE rac1

ora.MGMTLSNR ora....nr.type ONLINE ONLINE rac1

ora.OCR.dg ora....up.type ONLINE ONLINE rac1

ora.asm ora.asm.type ONLINE ONLINE rac1

ora.cvu ora.cvu.type ONLINE ONLINE rac1

ora.mgmtdb ora....db.type ONLINE ONLINE rac1

ora....network ora....rk.type ONLINE ONLINE rac1

ora.oc4j ora.oc4j.type ONLINE ONLINE rac1

ora.ons ora.ons.type ONLINE ONLINE rac1

ora.proxy_advm ora....vm.type ONLINE ONLINE rac1

ora....C1.lsnr application ONLINE ONLINE rac1

ora.rac1.ons application ONLINE ONLINE rac1

ora.rac1.vip ora....t1.type ONLINE ONLINE rac1

ora....C2.lsnr application ONLINE ONLINE rac2

ora.rac2.ons application ONLINE ONLINE rac2

ora.rac2.vip ora....t1.type ONLINE ONLINE rac2

ora.scan1.vip ora....ip.type ONLINE ONLINE rac2

ora.scan2.vip ora....ip.type ONLINE ONLINE rac1

ora.scan3.vip ora....ip.type ONLINE ONLINE rac1

 

[grid@rac1 ~]$ srvctl config scan

SCAN name: scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 0 IPv4 VIP: 192.168.56.21

SCAN name: scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 1 IPv4 VIP: 192.168.56.22

SCAN name: scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 2 IPv4 VIP: 192.168.56.20

[grid@rac1 ~]$

 

這裡是2個節點的RAC 集群。

 

SCAN 名稱是：scan.cndba.cn

3個SCAN IP：

192.168.56.20

192.168.56.21

192.168.56.22

 

 

2 修改SCAN

 

2.1 停止SCAN

 

[grid@rac1 ~]$ srvctl stop scan_listener

[grid@rac1 ~]$ srvctl stop scan

[grid@rac1 ~]$ srvctl status scan

SCAN VIP scan1 is enabled

SCAN VIP scan1 is not running

SCAN VIP scan2 is enabled

SCAN VIP scan2 is not running

SCAN VIP scan3 is enabled

SCAN VIP scan3 is not running

 

2.2 修改SCAN 信息

 

這裡我們修改SCAN 名稱和IP 地址。

 

這裡將SCAN 名稱從SCAN 修改成cndba-scan.

 

IP 地址修改成：

192.168.56.30

192.168.56.31

192.168.56.32

 

關於SCAN的修改，參考如下鏈接：

Oracle 12c RAC 集群使用DNS 實現 SCAN

http://blog.csdn.net/tianlesoftware/article/details/42917867

 

修改之後，如下：

 

[grid@rac1 grid]$ nslookupcndba-scan.cndba.cn

Server: 192.168.56.200

Address: 192.168.56.200#53

 

Name: cndba-scan.cndba.cn

Address: 192.168.56.30

Name: cndba-scan.cndba.cn

Address: 192.168.56.31

Name: cndba-scan.cndba.cn

Address: 192.168.56.32

 

[grid@rac2 ~]$ nslookup cndba-scan.cndba.cn

Server: 192.168.56.200

Address: 192.168.56.200#53

 

Name: cndba-scan.cndba.cn

Address: 192.168.56.31

Name: cndba-scan.cndba.cn

Address: 192.168.56.32

Name: cndba-scan.cndba.cn

Address: 192.168.56.30

 

2.3 執行修改操作

 

用root用戶執行如下操作。

 

[grid@rac1 ~]$ which srvctl

/u01/gridsoft/12.1.0/bin/srvctl

 

[grid@rac1 ~]$ which crsctl

/u01/gridsoft/12.1.0/bin/crsctl

 

[root@rac1 /]# /u01/gridsoft/12.1.0/bin/srvctlmodify scan -n cndba-scan.cndba.cn

 

[grid@rac1 ~]$ srvctl config scan

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 0 IPv4 VIP: 192.168.56.30

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 1 IPv4 VIP: 192.168.56.31

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 2 IPv4 VIP: 192.168.56.32

[grid@rac1 ~]$

 

 

看上去，一切都ok了，實際上，並沒有，我們還SCAN_VIP的屬性：

 

[grid@rac1 ~]$ crs_stat -t

Name Type Target State Host

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

…

ora.scan1.vip ora....ip.type OFFLINE OFFLINE

ora.scan2.vip ora....ip.type OFFLINE OFFLINE

ora.scan3.vip ora....ip.type OFFLINE OFFLINE

 

[grid@rac1 ~]$ crsctl stat res ora.scan3.vip-p

NAME=ora.scan3.vip

TYPE=ora.scan_vip.type

ACL=owner:root:rwx,pgrp:root:r-x,other::r--,group:oinstall:r-x,user:grid:r-x

ACTIONS=

…

RESTART_ATTEMPTS=0

SCAN_NAME=scan.cndba.cn

SCRIPT_TIMEOUT=60

SERVER_CATEGORY=ora.hub.category

…

USR_ORA_VIP=192.168.56.20

VERSION=12.1.0.1.0

 

[grid@rac1 ~]$

 

[grid@rac1 ~]$ crsctl stat resora.scan3.vip

NAME=ora.scan3.vip

TYPE=ora.scan_vip.type

TARGET=OFFLINE

STATE=OFFLINE

 

所以我們，我們要修改type裡的信息。

 

用root用戶執行：

[root@rac1 /]#/u01/gridsoft/12.1.0/bin/crsctl modify type ora.scan_vip.type -attr"ATTRIBUTE=SCAN_NAME,DEFAULT_VALUE=cndba-scan.cndba.cn"

[root@rac1 /]#

 

這次就全變了：

[grid@rac1 ~]$ crsctl stat res ora.scan3.vip -p

NAME=ora.scan3.vip

TYPE=ora.scan_vip.type

…

SCAN_NAME=cndba-scan.cndba.cn

…

USR_ORA_VIP=192.168.56.32

VERSION=12.1.0.1.0

 

至此，修改完成。

 

 

 

2.4 啟動SCAN

 

用grid用戶操作：

 

[grid@rac1 ~]$ srvctl start scan

[grid@rac1 ~]$ srvctl start scan_listener

 

 

 

2.5 驗證

 

[grid@rac2 ~]$ srvctl config scan

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 0 IPv4 VIP: 192.168.56.30

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 1 IPv4 VIP: 192.168.56.31

SCAN name: cndba-scan.cndba.cn, Network: 1

Subnet IPv4:192.168.56.0/255.255.255.0/eth0

Subnet IPv6:

SCAN 2 IPv4 VIP: 192.168.56.32

[grid@rac2 ~]$

 

 

[grid@rac2 ~]$ crsctl stat res -t

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

Name Target State Server Statedetails

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

Local Resources

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

ora.ASMNET1LSNR_ASM.lsnr

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

ora.LISTENER.lsnr

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

ora.OCR.dg

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

ora.net1.network

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

ora.ons

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

ora.proxy_advm

ONLINE ONLINE rac1 STABLE

ONLINE ONLINE rac2 STABLE

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

Cluster Resources

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

ora.LISTENER_SCAN1.lsnr

1 ONLINE ONLINE rac2 STABLE

ora.LISTENER_SCAN2.lsnr

1 ONLINE ONLINE rac1 STABLE

ora.LISTENER_SCAN3.lsnr

1 ONLINE ONLINE rac1 STABLE

ora.MGMTLSNR

1 ONLINE ONLINE rac1 169.254.95.238 192.1

68.57.5,STABLE

ora.asm

1 ONLINE ONLINE rac1 STABLE

2 ONLINE ONLINE rac2 STABLE

3 OFFLINE OFFLINE STABLE

ora.cvu

1 ONLINE ONLINE rac1 STABLE

ora.mgmtdb

1 ONLINE ONLINE rac1 Open,STABLE

ora.oc4j

1 ONLINE ONLINE rac1 STABLE

ora.rac1.vip

1 ONLINE ONLINE rac1 STABLE

ora.rac2.vip

1 ONLINE ONLINE rac2 STABLE

ora.scan1.vip

1 ONLINE ONLINE rac2 STABLE

ora.scan2.vip

1 ONLINE ONLINE rac1 STABLE

ora.scan3.vip

1 ONLINE ONLINE rac1 STABLE

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