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Data Guard Broker 활성화

db_broker_start 파라미터 설정

코드 블럭
titlesys 유저로 primary와 standby에서 모두 수행
linenumberstrue
ALTER SYSTEM SET dg_broker_start=true;
펼치기

Primary

서식 미적용
SQL> ALTER SYSTEM SET dg_broker_start=true;

System altered.

SQL> show parameter dg_broker_start

NAME                                 TYPE                              VALUE
------------------------------------ --------------------------------- ------------------------------
dg_broker_start                      boolean                           TRUE

Standby

서식 미적용
SQL> ALTER SYSTEM SET dg_broker_start=true;

System altered.

SQL> show parameter dg_broker_start

NAME                                 TYPE                              VALUE
------------------------------------ --------------------------------- ------------------------------
dg_broker_start                      boolean                           TRUE



Data Guard Broker 환경 구성

Oracle Data Guard command-line interface(이하 DGMGRL) 접속

코드 블럭
titlesysdba 권한으로 접속
linenumberstrue
dgmgrl sys/<sys 계정 암호>@[primary 네트워크 서비스명]
-- dgmgrl / as sysdba
펼치기
서식 미적용
[oracle@orcl ~]$ dgmgrl sys/oracle@orcl_primary
DGMGRL for Linux: Release 19.0.0.0.0 - Production on Tue Feb 13 14:27:06 2024
Version 19.11.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

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



데이터베이스 등록

코드 블럭
titleData Guard 대상 데이터베이스 등록
linenumberstrue
CREATE CONFIGURATION [Data Guard 구성 이름] AS PRIMARY DATABASE IS [primary 글로벌 DB명] CONNECT IDENTIFIER IS [primary 네트워크 서비스명];
ADD DATABASE [standby 글로벌 DB명] AS CONNECT IDENTIFIER IS [standby 네트워크 서비스명] MAINTAINED AS PHYSICAL;
펼치기
서식 미적용
DGMGRL> CREATE CONFIGURATION dg_orcl AS PRIMARY DATABASE IS orcl CONNECT IDENTIFIER IS orcl_primary;
Configuration "dg_orcl" created with primary database "orcl"

DGMGRL> ADD DATABASE orcl_stby AS CONNECT IDENTIFIER IS orcl_standby MAINTAINED AS PHYSICAL;
Database "orcl_stby" added

DGMGRL> SHOW CONFIGURATION;

Configuration - dg_orcl

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

Fast-Start Failover:  Disabled

Configuration Status:
DISABLED



Data Guard Broker 설정 활성화

코드 블럭
titleData Guard Broker 활성화
linenumberstrue
ENABLE CONFIGURATION;
펼치기
서식 미적용
DGMGRL> ENABLE CONFIGURATION;
Enabled.



Data Guard Broker 등록 정보 조회

코드 블럭
titleBroker에 등록된 정보 조회
linenumberstrue
SHOW CONFIGURATION;
SHOW DATABASE [primary 글로벌 DB명];
SHOW DATABASE [standby 글로벌 DB명];
펼치기
서식 미적용
DGMGRL> SHOW CONFIGURATION;

Configuration - dg_orcl

  Protection Mode: MaxPerformance
  Members:
  orcl      - Primary database
    orcl_stby - Physical standby database
      Warning: ORA-16854: apply lag could not be determined

Fast-Start Failover:  Disabled

Configuration Status:
WARNING   (status updated 2 seconds ago)

... << 로그 적용을 위해 잠시 대기 >> ...

DGMGRL> SHOW CONFIGURATION;

Configuration - dg_orcl

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

Fast-Start Failover:  Disabled

Configuration Status:
SUCCESS   (status updated 12 seconds ago)

DGMGRL> SHOW DATABASE orcl;

Database - orcl

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

Database Status:
SUCCESS

DGMGRL> SHOW DATABASE orcl_stby;

Database - orcl_stby

  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: 68.00 KByte/s
  Real Time Query:    OFF
  Instance(s):
    orcl

Database Status:
SUCCESS



정적 연결 식별자 설정

코드 블럭
titleDB별 접속 정보 확인 및 변경
linenumberstrue
SHOW DATABASE [primary 글로벌 DB명] StaticConnectIdentifier;
EDIT DATABASE [primary 글로벌 DB명] SET PROPERTY StaticConnectIdentifier = '[primary 접속 정보]';
SHOW DATABASE [standby 글로벌 DB명] StaticConnectIdentifier;
EDIT DATABASE [standby 글로벌 DB명] SET PROPERTY StaticConnectIdentifier = '[standby 접속 정보]';
펼치기
서식 미적용
DGMGRL> show database orcl StaticConnectIdentifier
  StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=seoul)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))'

DGMGRL> edit database orcl set property StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=seoul_dg)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))';
Property "staticconnectidentifier" updated

DGMGRL> show database orcl StaticConnectIdentifier
  StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=seoul)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))'
서식 미적용
DGMGRL> show database orcl_stby StaticConnectIdentifier
  StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=busan)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_stby_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))'

DGMGRL> edit database orcl_stby set property StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=busan_dg)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_stby_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))';
Property "staticconnectidentifier" updated

DGMGRL> show database orcl_stby StaticConnectIdentifier
  StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=busan_dg)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl_stby_DGMGRL)(INSTANCE_NAME=orcl)(SERVER=DEDICATED)))'

기본 포트(1521)이 아닌 포트 번호를 사용하거나, 서비스에 사용되는 네트워크와 다른 설정을 사용할 경우에 Data Guard Broker 내의 접속 설정을 변경해야 할 수 있습니다.

Data Guard Broker 설정 백업

코드 블럭
titleDGMGRL 에서 수행
linenumberstrue
EXPORT CONFIGURATION TO dg_config.xml
펼치기
서식 미적용
DGMGRL> EXPORT CONFIGURATION TO dg_config.xml
Succeeded.



Data Guard 구성 결과 확인 및 추가 작업

데이터베이스 상태 확인

코드 블럭
titlePrimary DB와 Standby DB에서 수행
linenumberstrue
SELECT db_unique_name, open_mode, database_role, switchover_status, dataguard_broker FROM v$database;
펼치기

Primary

서식 미적용
SQL> set lines 200
SQL> col db_unique_name form a20
SQL> col open_mode form a20
SQL> col database_role form a20
SQL> col switchover_status form a20
SQL> col dataguard_broker form a20
SQL> SELECT db_unique_name, open_mode, database_role, switchover_status, dataguard_broker FROM v$database;

DB_UNIQUE_NAME       OPEN_MODE            DATABASE_ROLE        SWITCHOVER_STATUS    DATAGUARD_BROKER
-------------------- -------------------- -------------------- -------------------- --------------------
orcl                 READ WRITE           PRIMARY              TO STANDBY           ENABLED

Standby

서식 미적용
SQL> set lines 200
SQL> col db_unique_name form a20
SQL> col open_mode form a20
SQL> col database_role form a20
SQL> col switchover_status form a20
SQL> col dataguard_broker form a20
SQL> SELECT db_unique_name, open_mode, database_role, switchover_status, dataguard_broker FROM v$database;

DB_UNIQUE_NAME       OPEN_MODE            DATABASE_ROLE        SWITCHOVER_STATUS    DATAGUARD_BROKER
-------------------- -------------------- -------------------- -------------------- --------------------
orcl_stby            MOUNTED              PHYSICAL STANDBY     NOT ALLOWED          ENABLED



Local listener 설정

코드 블럭
title서버별 TNS 설정에 맞게 적용
linenumberstrue
alter system set local_listener='<서비스 tns명>,<DG 전용 tns명>' scope=both;
펼치기

Primary 설정

서식 미적용
SQL> alter system set local_listener='ORCL,ORCL_PRIMARY' scope=both;

System altered.

SQL> ALTER SYSTEM REGISTER;

System altered.

SQL> show parameter local_listener

NAME                                 TYPE                              VALUE
------------------------------------ --------------------------------- ------------------------------
local_listener                       string                            ORCL,ORCL_PRIMARY

Standby 설정

서식 미적용
SQL> alter system set local_listener='ORCL_STBY,ORCL_STANDBY' scope=both;

System altered.

SQL> ALTER SYSTEM REGISTER;

System altered.

SQL> show parameter local_listener

NAME                                 TYPE                              VALUE
------------------------------------ --------------------------------- ------------------------------
local_listener                       string                            ORCL_STBY,ORCL_STANDBY


기존 설정된 local listener 파라미터에 DG 전용 리스너를 추가합니다.

아카이브 로그 삭제 방지 정책 추가

코드 블럭
titlePrimary와 Standby의 RMAN 설정 변경
linenumberstrue
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
펼치기
서식 미적용
RMAN> CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

new RMAN configuration parameters:
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
new RMAN configuration parameters are successfully stored

RMAN> SHOW ALL;

RMAN configuration parameters for database with db_unique_name ORCL are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE RMAN OUTPUT TO KEEP FOR 7 DAYS; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/19c/db_1/dbs/snapcf_orcl.f'; # default


Standby에 적용되지 않은 아카이브 로그가 삭제되어 데이터 손실이 발생하지 않도록 아카이브 삭제 정책을 수정합니다.

Primary와 Standby에서 각각 수행합니다.