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Switchover

Standby로 switchover

Primary에 DGMGRL로 접속

코드 블럭
languagebash
titleDGMGRL로 primary DB에 접속
linenumberstrue
dgmgrl sys/oracle@ORCL
펼치기
서식 미적용
[oracle@orcl ~]$ dgmgrl sys/oracle@ORCL
DGMGRL for Linux: Release 18.0.0.0.0 - Production on Mon Sep 10 15:41:25 2018
Version 18.3.0.0.0

Copyright (c) 1982, 2018, Oracle and/or its affiliates.  All rights reserved.

Welcome to DGMGRL, type "help" for information.
Connected to "ORCL"
Connected as SYSDBA.

 

Standby로 switchover

코드 블럭
titleStandby로 switchover 수행
linenumberstrue
SWITCHOVER TO orcl_stb;
펼치기
서식 미적용
DGMGRL> SWITCHOVER TO orcl_stb;
Performing switchover NOW, please wait...
Operation requires a connection to database "orcl_stb"
Connecting ...
Connected to "ORCL_STB"
Connected as SYSDBA.
New primary database "orcl_stb" is opening...
Operation requires start up of instance "orcl" on database "orcl"
Starting instance "orcl"...
Connected to an idle instance.
ORACLE instance started.
Database mounted.
Connected to "ORCL"
Switchover succeeded, new primary is "orcl_stb"

 

Switchover 결과 확인

코드 블럭
titleSwitchover 결과 확인
linenumberstrue
SHOW CONFIGURATION;
SHOW DATABASE orcl;
SHOW DATABASE orcl_stb;
펼치기
서식 미적용
DGMGRL> SHOW CONFIGURATION;

Configuration - dg_orcl

  Protection Mode: MaxPerformance
  Members:
  orcl_stb - Primary database
    orcl     - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS   (status updated 77 seconds ago)

DGMGRL> SHOW DATABASE orcl;

Database - orcl

  Role:               PHYSICAL STANDBY
  Intended State:     APPLY-ON
  Transport Lag:      0 seconds (computed 1 second ago)
  Apply Lag:          0 seconds (computed 1 second ago)
  Average Apply Rate: 210.00 KByte/s
  Real Time Query:    OFF
  Instance(s):
    orcl

Database Status:
SUCCESS

DGMGRL> SHOW DATABASE orcl_stb;

Database - orcl_stb

  Role:               PRIMARY
  Intended State:     TRANSPORT-ON
  Instance(s):
    orcl

Database Status:
SUCCESS

 

Switchover

결과

후 데이터베이스 상태 확인

코드 블럭
titlePrimary DB와 Standby DB에서 수행
linenumberstrue
SELECT instance_name, status FROM v$instance;
SELECT db_unique_name, database_role, switchover_status, dataguard_broker FROM v$database;
펼치기
서식 미적용
SQL> SELECT instance_name, status FROM v$instance;

INSTANCE_NAME    STATUS
---------------- ------------
orcl             MOUNTED

SQL> SELECT db_unique_name, database_role, switchover_status, dataguard_broker FROM v$database;

DB_UNIQUE_NAME                 DATABASE_ROLE    SWITCHOVER_STATUS    DATAGUAR
------------------------------ ---------------- -------------------- --------
ORCL                           PRIMARY          TO STANDBY           ENABLED
서식 미적용
SQL> SELECT instance_name, status FROM v$instance;

INSTANCE_NAME    STATUS
---------------- ------------
orcl             OPEN

SQL> SELECT db_unique_name, database_role, switchover_status, dataguard_broker FROM v$database;

DB_UNIQUE_NAME                 DATABASE_ROLE    SWITCHOVER_STATUS    DATAGUAR
------------------------------ ---------------- -------------------- --------
ORCL_STB                       PRIMARY          TO STANDBY           ENABLED

 

Primary로 복원

Standby에 DGMGRL로 접속

코드 블럭
languagebash
titleDGMGRL로 standby DB에 접속
linenumberstrue
dgmgrl sys/oracle@ORCL_STB
펼치기
서식 미적용
[oracle@orcl ~]$ dgmgrl sys/oracle@ORCL_STB
DGMGRL for Linux: Release 18.0.0.0.0 - Production on Mon Sep 10 15:54:25 2018
Version 18.3.0.0.0

Copyright (c) 1982, 2018, Oracle and/or its affiliates.  All rights reserved.

Welcome to DGMGRL, type "help" for information.
Connected to "ORCL_STB"
Connected as SYSDBA.

 

Primary로 switchover

코드 블럭
titlePrimary로 switchover 수행
linenumberstrue
SWITCHOVER TO orcl;
펼치기
서식 미적용
DGMGRL> SWITCHOVER TO orcl;
Performing switchover NOW, please wait...
Operation requires a connection to database "orcl"
Connecting ...
Connected to "ORCL"
Connected as SYSDBA.
New primary database "orcl" is opening...
Operation requires start up of instance "orcl" on database "orcl_stb"
Starting instance "orcl"...
Connected to an idle instance.
ORACLE instance started.
Database mounted.
Connected to "ORCL_STB"
Switchover succeeded, new primary is "orcl"

 

복원 결과 확인

코드 블럭
title복원 결과 확인
linenumberstrue
SHOW CONFIGURATION;
SHOW DATABASE orcl;
SHOW DATABASE orcl_stb;
펼치기
서식 미적용
DGMGRL> SHOW CONFIGURATION;

Configuration - dg_orcl

  Protection Mode: MaxPerformance
  Members:
  orcl     - Primary database
    orcl_stb - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS   (status updated 71 seconds ago)

DGMGRL> SHOW DATABASE orcl;

Database - orcl

  Role:               PRIMARY
  Intended State:     TRANSPORT-ON
  Instance(s):
    orcl

Database Status:
SUCCESS

DGMGRL> SHOW DATABASE orcl_stb;

Database - orcl_stb

  Role:               PHYSICAL STANDBY
  Intended State:     APPLY-ON
  Transport Lag:      0 seconds (computed 0 seconds ago)
  Apply Lag:          0 seconds (computed 0 seconds ago)
  Average Apply Rate: 386.00 KByte/s
  Real Time Query:    OFF
  Instance(s):
    orcl

Database Status:
SUCCESS

 

복원

결과

후 데이터베이스 상태 확인

코드 블럭
titlePrimary DB와 Standby DB에서 수행
linenumberstrue
SELECT instance_name, status FROM v$instance;
SELECT db_unique_name, database_role, switchover_status, dataguard_broker FROM v$database;
펼치기
서식 미적용
SQL> SELECT instance_name, status FROM v$instance;

INSTANCE_NAME    STATUS
---------------- ------------
orcl             OPEN

SQL> SELECT name, database_role, switchover_status, dataguard_broker FROM v$database;

NAME      DATABASE_ROLE    SWITCHOVER_STATUS    DATAGUAR
--------- ---------------- -------------------- --------
ORCL      PRIMARY          TO STANDBY           ENABLED
서식 미적용
SQL> SELECT instance_name, status FROM v$instance;

INSTANCE_NAME    STATUS
---------------- ------------
orcl             MOUNTED

SQL> SELECT name, database_role, switchover_status, dataguard_broker FROM v$database;

NAME      DATABASE_ROLE    SWITCHOVER_STATUS    DATAGUAR
--------- ---------------- -------------------- --------
ORCL      PHYSICAL STANDBY NOT ALLOWED          ENABLED