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Oracle11gRACOnenode安裝與配置-創新互聯

一、RAC One Node介紹
1、rac one node數據庫可以轉換成RAC數據庫,轉換過程可以在線,無需停止RAC one node數據庫;
2、rac one node可以創建多個rac onde node數據庫運行在不同的節點上;
3、當運行節點需要維護,如打patch,可以手動切換(relocate)使用online database relocate,減少業務中斷時間;
4、rac one node比RAC數據庫減少了節點間數據傳輸時間以及GC類的等待事件;
5、從11.2.0.1開始就有了rac one node特性,但僅僅支持linux平臺,在11.2.0.2以后支持所有平臺;
參考文檔:Oracle RACOne Node -- Changes in 11.2.0.2 (文檔 ID 1232802.1)?
二、使用DBCA創建RAC One Node
[oracle@jzh2 ~]$ dbca
2.1 選擇"Oracle RAC One Node database"
Oracle 11g RAC One node 安裝與配置
后面創建數據庫與創建RAC數據庫基本一致,過程省略。。。。。
2.2、RAC one數據庫基本信息
$ srvctl config database -d jzh
Database unique name: jzh
Database name: jzh
Oracle home: /u01/app/oracle/product/11.2.0/db_1
Oracle user: oracle
Spfile: +DATA/jzh/spfilejzh.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: jzh
Database instances:
Disk Groups: DATA,ARCH
Mount point paths:
Services: jzhdb==============》新建的Service
Type: RACOneNode===========》數據庫類型是 one node
Online relocation timeout: 30
Instance name prefix: jzh
Candidate servers: jzh2,jzh3
Database is administrator managed
2.3、數據庫配置信息
SQL> show parameter name
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_file_name_convert                 string
db_name                              string      jzh
db_unique_name                       string      jzh
global_names                         boolean     FALSE
instance_name                        string      jzh_1==========》實例名,在RAC數據庫中實例一般為jzh2,而在RAC One Node中多了"_"。
lock_name_space                      string
log_file_name_convert                string
processor_group_name                 string
service_names                        string      jzhdb
2.4、集群信息
SQL> show parameter cluster_database
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
cluster_database                     boolean     TRUE
cluster_database_instances           integer     2
2.5、RAC One Node切換(relocate)
查詢當前實例運行情況:
$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ARCH.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.DATA.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.LISTENER.lsnr
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.VOTE.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.asm
               ONLINE  ONLINE       jzh2                     Started
               ONLINE  ONLINE       jzh3                     Started
ora.gsd
               OFFLINE OFFLINE      jzh2
               OFFLINE OFFLINE      jzh3
ora.net1.network
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.ons
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       jzh3
ora.cvu
      1        OFFLINE OFFLINE
ora.jzh.db
      1        ONLINE  ONLINE       jzh2                     Open
ora.jzh.jzhdb.svc
      1        ONLINE  ONLINE       jzh2
ora.jzh2.vip
      1        ONLINE  ONLINE       jzh2
ora.jzh3.vip
      1        ONLINE  ONLINE       jzh3
ora.oc4j
      1        ONLINE  ONLINE       jzh3
ora.scan1.vip
      1        ONLINE  ONLINE       jzh3
數據庫與service均運行在節點1上(jzh2)
2.6、使用relocate將RAC One Node數據庫切到節點2上(jzh3)
$ srvctl relocate database -d jzh -n jzh3
relocate之后,再次查詢RAC One Node運行情況:
$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ARCH.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.DATA.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.LISTENER.lsnr
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.VOTE.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.asm
               ONLINE  ONLINE       jzh2                     Started
               ONLINE  ONLINE       jzh3                     Started
ora.gsd
               OFFLINE OFFLINE      jzh2
               OFFLINE OFFLINE      jzh3
ora.net1.network
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.ons
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       jzh3
ora.cvu
      1        OFFLINE OFFLINE
ora.jzh.db
      2        ONLINE  ONLINE       jzh3                     Open
ora.jzh.jzhdb.svc
      1        ONLINE  ONLINE       jzh3
ora.jzh2.vip
      1        ONLINE  ONLINE       jzh2
ora.jzh3.vip
      1        ONLINE  ONLINE       jzh3
ora.oc4j
      1        ONLINE  ONLINE       jzh3
ora.scan1.vip
      1        ONLINE  ONLINE       jzh3
此時,數據庫與service切換至節點2上(jzh3)。
2.7、查看數據庫配置信息
[grid@jzh2 ~]$ srvctl config service -d jzh
Service name: jzhdb
Service is enabled
Server pool: jzh
Cardinality: 1
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: false
Failover type: NONE
Failover method: NONE
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: jzh_2
Available instances:
2.8 轉換RAC One Node至RAC
注:以RAC One Node database擁有者執行以下命令:
$ su - oracle
$ srvctl convert database -d jzh -c RAC -n jzh2
$ srvctl config database -d jzh
Database unique name: jzh
Database name: jzh
Oracle home: /u01/app/oracle/product/11.2.0/db_1
Oracle user: oracle
Spfile: +DATA/jzh/spfilejzh.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: jzh
Database instances: jzh_1
Disk Groups: DATA,ARCH
Mount point paths:
Services: jzhdb
Type: RAC
Database is administrator managed
我們可以看到Type類型變成RAC了。
2.9、添加節點2(jzh3)實例
$ srvctl add instance -d jzh -i jzh_2 -n jzh3
$ srvctl config database -d jzh
Database unique name: jzh
Database name: jzh
Oracle home: /u01/app/oracle/product/11.2.0/db_1
Oracle user: oracle
Spfile: +DATA/jzh/spfilejzh.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: jzh
Database instances: jzh_1,jzh_2
Disk Groups: DATA,ARCH
Mount point paths:
Services: jzhdb
Type: RAC
Database is administrator managed
這里我們看到jzh_2添加進來了。
$ srvctl start database -d jzh
$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ARCH.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.DATA.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.LISTENER.lsnr
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.VOTE.dg
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.asm
               ONLINE  ONLINE       jzh2                     Started
               ONLINE  ONLINE       jzh3                     Started
ora.gsd
               OFFLINE OFFLINE      jzh2
               OFFLINE OFFLINE      jzh3
ora.net1.network
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
ora.ons
               ONLINE  ONLINE       jzh2
               ONLINE  ONLINE       jzh3
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       jzh3
ora.cvu
      1        OFFLINE OFFLINE
ora.jzh.db
      1        ONLINE  ONLINE       jzh2                     Open
      2        ONLINE  ONLINE       jzh3                     Open
ora.jzh.jzhdb.svc
      1        ONLINE  ONLINE       jzh2
ora.jzh2.vip
      1        ONLINE  ONLINE       jzh2
ora.jzh3.vip
      1        ONLINE  ONLINE       jzh3
ora.oc4j
      1        ONLINE  ONLINE       jzh3
ora.scan1.vip
      1        ONLINE  ONLINE       jzh3
這里可以看到DB運行在jzh2,jzh3上。
2.10、重新配置服務
$ srvctl stop service -d jzh -s jzhdb
$ srvctl remove service -d jzh -s jzhdb
$ srvctl add service -d jzh -s jzhdb -r jzh_1,jzh_2 -P BASIC
$ srvctl start service -d jzh -s jzhdb
至此,RAC One Node配置完成!

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