Wednesday, 3 June 2020

RAC - Convert one Node to Standard 2 node RAC database

Scenario Preview:

We have One node RAC database setup 12c with Active - Passive database server. Now we have to convert it into 2 node active -active database .

  • Status of one node rac database 
oracle@srv2:~> srvctl config database -d RAC
Database unique name: RAC
Database name: RAC
Oracle home: /u01/app/oracle/product/12.1.0/db_1
Oracle user: oracle
Spfile: +DATA/RAC/PARAMETERFILE/spfile.274.1038413121
Password file: +DATA/RAC/PASSWORD/pwdrac.262.1038412435
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools:
Disk Groups: FRA,DATA
Mount point paths:
Services: staf
Type: RACOneNode
Online relocation timeout: 5
Instance name prefix: RAC2
Candidate servers: srv1,srv2
OSDBA group: dba
OSOPER group: oper
Database instances:
Database is administrator managed
  • Active node instance status database 
oracle@srv2:~> srvctl status database -d rac
Instance RAC2_1 is running on node srv1
Online relocation: INACTIVE
oracle@srv2:~>

  • Convert node one database to 2 node RAC Database

 oracle@srv1:~> srvctl convert database -d RAC -c RAC
  • Check the status of 2 node  RAC database
oracle@srv1:~> srvctl config database -d rac
Database unique name: RAC
Database name: RAC
Oracle home: /u01/app/oracle/product/12.1.0/db_1
Oracle user: oracle
Spfile: +DATA/RAC/PARAMETERFILE/spfile.274.1038413121
Password file: +DATA/RAC/PASSWORD/pwdrac.262.1038412435
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools:
Disk Groups: FRA,DATA
Mount point paths:
Services: staf
Type: RAC
Start concurrency:
Stop concurrency:
OSDBA group: dba
OSOPER group: oper
Database instances: RAC2_1
Configured nodes: srv1
Database is administrator managed
oracle@srv1:~>

  • Add instance to rac database and mention server name (here srv2), Rember all commands are operated on active on node database
oracle@srv1:~> srvctl add instance -d RAC -i rac_2 -n srv2
  • Start instance of node2 instance
oracle@srv1:~> srvctl start instance -d rac -i rac_2

  • Check the status of database
oracle@srv1:~> srvctl status database -db rac
Instance RAC2_1 is running on node srv1
Instance rac_2 is running on node srv2

  • Check the configuration status
oracle@srv1:~> srvctl config database -db oradb
PRCD-1120 : The resource for database oradb could not be found.
PRCR-1001 : Resource ora.oradb.db does not exist
oracle@srv1:~> srvctl config database -db rac
Database unique name: RAC
Database name: RAC
Oracle home: /u01/app/oracle/product/12.1.0/db_1
Oracle user: oracle
Spfile: +DATA/RAC/PARAMETERFILE/spfile.274.1038413121
Password file: +DATA/RAC/PASSWORD/pwdrac.262.1038412435
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools:
Disk Groups: FRA,DATA
Mount point paths:
Services: staf
Type: RAC
Start concurrency:
Stop concurrency:
OSDBA group: dba
OSOPER group: oper
Database instances: RAC2_1,rac_2
Configured nodes: srv1,srv2
Database is administrator managed
  • Check clusterware status

oracle@srv2:~> crsctl status resource -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.CRS.dg
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
ora.DATA.dg
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
ora.FRA.dg
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
ora.asm
               ONLINE  ONLINE       srv1                     Started,STABLE
               ONLINE  ONLINE       srv2                     Started,STABLE
ora.net1.network
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
ora.ons
               ONLINE  ONLINE       srv1                     STABLE
               ONLINE  ONLINE       srv2                     STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       srv1                     STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       srv2                     STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       srv2                     STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       srv1                     169.254.52.81 192.16
                                                             8.10.1,STABLE
ora.cvu
      1        ONLINE  ONLINE       srv2                     STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       srv1                     Open,STABLE
ora.oc4j
      1        ONLINE  ONLINE       srv2                     STABLE
ora.rac.db
      1        ONLINE  ONLINE       srv1                     Open,STABLE
      2        ONLINE  ONLINE       srv2                     Open,STABLE
ora.rac.staf.svc
      1        ONLINE  ONLINE       srv1                     STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       srv1                     STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       srv2                     STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       srv2                     STABLE
ora.srv1.vip
      1        ONLINE  ONLINE       srv1                     STABLE
ora.srv2.vip
      1        ONLINE  ONLINE       srv2                     STABLE
--------------------------------------------------------------------------------
oracle@srv2:~>

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