oracle DG搭建

Oracle DG 搭建
1、环境
OS IP hostname db_name DB_UNIQUE_NAME
主库 RHEL 5.4 192.168.12.20 edgzrip1.oracle.com PROD1 PROD1
备库 RHEL 5.4 192.168.12.30 edgzrip2.oracle.com PROD1 DG

2、设置主库开启归档
SQL> alter database archivelog;
Database altered.
3、设置主库开启强制记录日志
SQL> alter database force logging;
Database altered.
4、查询主库归档模式及日志强制记录
SQL> select log_mode,force_logging from v$database;
LOG_MODE FOR
------------ ---
ARCHIVELOG YES
5、添加standby log
SQL> alter database add standby logfile group 4 '/u01/app/oracle/oradata/PROD1/standby04.log' size 50m;

Database altered.

SQL> alter database add standby logfile group 5 '/u01/app/oracle/oradata/PROD1/standby05.log' size 50m;

Database altered.

SQL> alter database add standby logfile group 6 '/u01/app/oracle/oradata/PROD1/standby06.log' size 50m;

Database altered.

SQL> alter database add standby logfile group 7 '/u01/app/oracle/oradata/PROD1/standby07.log' size 50m;

Database altered.
6、主库创建pfile
SQL> create pfile from spfile;
File created.
7、传送pfile到备库
[root@edgzrip1 dbs]# scp initPROD1.ora edgzrip2:/u01/app/oracle/product/11.2.0/db_1/dbs/initDG.ora
root@edgzrip2's password:
initPROD1.ora
8、修改pfile
在pfile追加以下参数
DB_UNIQUE_NAME=PROD1
LOG_ARCHIVE_CONFIG='DG_CONFIG=(PROD1,DG)'
LOG_ARCHIVE_DEST_1='LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=PROD1'
LOG_ARCHIVE_DEST_2= 'SERVICE=DG ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=DG'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
FAL_SERVER=DG
DB_FILE_NAME_CONVERT='/u01/app/oracle/oradata/DG','/u01/app/oracle/oradata/PROD1'
LOG_FILE_NAME_CONVERT='/u01/app/oracle/oradata/DG','/u01/app/oracle/oradata/PROD1'
STANDBY_FILE_MANAGEMENT=AUTO
9、使用新的pfile启动主库，并创建新的spfile
Startup pfile=’/u01/app/oracle/product/11.2.0/db_1/dbs/initPROD1.ora’
Create spfile from pfile;
10、传送密码文件orapwPROD1到备库
[root@edgzrip1 dbs]# scp orapwPROD1 edgzrip2:/u01/app/oracle/product/11.2.0/db_1/dbs/ orapwDG

11、修改备库参数文件initDG.ora
追加以下参数：
DB_UNIQUE_NAME=DG
LOG_ARCHIVE_CONFIG='DG_CONFIG=(DG,PROD1)'
LOG_ARCHIVE_DEST_1='LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=DG'
LOG_ARCHIVE_DEST_2= 'SERVICE=PROD1 ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=PROD1'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
FAL_SERVER=PROD1
DB_FILE_NAME_CONVERT='/u01/app/oracle/oradata/PROD1','/u01/app/oracle/oradata/DG'
LOG_FILE_NAME_CONVERT='/u01/app/oracle/oradata/PROD1','/u01/app/oracle/oradata/DG'
STANDBY_FILE_MANAGEMENT=AUTO
12、在备库创建相应目录
Mkdir –p /u01/app/oracle/oradata/DG
Mkdir –p /u01/app/oracle/fast_recovery_area/DG
Mkdir –p /u01/app/oracle/admin/DG/{a,dp}dump
13、使用备库pfile创建spfile，并启动到nomount状态
[oracle@edgzrip2-DG ~]$ sqlplus / as sysdba
Create spfile from pfile；
Startup nomount
14、配置主库备库网络
主库listener.ora：
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = PROD1.us.oracle.com)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
(SID_NAME = PROD1)
)
)

LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip1.oracle.com)(PORT = 1521))
)

ADR_BASE_LISTENER = /u01/app/oracle

主库tnsnames.ora：
PROD1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip1.oracle.com)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = PROD1.us.oracle.com)
)
)

DG =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip2.oracle.com)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = DG.us.oracle.com)
)
)

备库listener.ora：
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = DG.us.oracle.com)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
(SID_NAME = DG)
)
)

备库tnsnames.ora：
PROD1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip1.oracle.com)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = PROD1.us.oracle.com)
)
)

DG =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip2.oracle.com)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = DG.us.oracle.com)
)
)

测试主备库网络：
启动主备库监听：lsnrctl start
主库：
[oracle@edgzrip1-PROD1 admin]$ tnsping prod1

TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 26-AUG-2019 19:52:18

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip1.oracle.com)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = PROD1.us.oracle.com)))
OK (10 msec)
[oracle@edgzrip1-PROD1 admin]$ tnsping dg

TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 26-AUG-2019 19:52:25

Used parameter files:

备库：
[oracle@edgzrip2-DG admin]$ tnsping prod1

TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 26-AUG-2019 19:55:22

Used parameter files:

TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 26-AUG-2019 19:55:26

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = edgzrip2.oracle.com)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = DG.us.oracle.com)))
OK (10 msec)
确认主备库网络无问题
15、备库登录rman
[oracle@edgzrip2-DG admin]$ rman target sys/oracle@prod1 auxiliary sys/oracle@dg

Recovery Manager: Release 11.2.0.3.0 - Production on Mon Aug 26 19:56:30 2019

connected to target database: PROD1 (DBID=2202819890)
connected to auxiliary database: PROD1 (not mounted)

RMAN>
16、执行duplicate
RMAN> duplicate target database for standby from active database nofilenamecheck dorecover;

Starting Duplicate Db at 21-SEP-19
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=19 device type=DISK

contents of Memory Script:
{
backup as copy reuse
targetfile '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/orapwPROD1' auxiliary format
'/u01/app/oracle/product/11.2.0/db_1/dbs/orapwDG' ;
}
executing Memory Script

Starting backup at 21-SEP-19
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=41 device type=DISK
Finished backup at 21-SEP-19

contents of Memory Script:
{
backup as copy current controlfile for standby auxiliary format '/u01/app/oracle/oradata/DG/control01.ctl';
restore clone controlfile to '/u01/app/oracle/fast_recovery_area/DG/control02.ctl' from
'/u01/app/oracle/oradata/DG/control01.ctl';
}
executing Memory Script

Starting backup at 21-SEP-19
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
copying standby control file
output file name=/u01/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_PROD1.f tag=TAG20190921T171431 RECID=2 STAMP=1019582073
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 21-SEP-19

Starting restore at 21-SEP-19
using channel ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: copied control file copy
Finished restore at 21-SEP-19

contents of Memory Script:
{
sql clone 'alter database mount standby database';
}
executing Memory Script

sql statement: alter database mount standby database

contents of Memory Script:
{
set newname for tempfile 1 to
"/u01/app/oracle/oradata/DG/temp01.dbf";
switch clone tempfile all;
set newname for datafile 1 to
"/u01/app/oracle/oradata/DG/system01.dbf";
set newname for datafile 2 to
"/u01/app/oracle/oradata/DG/sysaux01.dbf";
set newname for datafile 3 to
"/u01/app/oracle/oradata/DG/undotbs01.dbf";
set newname for datafile 4 to
"/u01/app/oracle/oradata/DG/users01.dbf";
set newname for datafile 5 to
"/u01/app/oracle/oradata/DG/example01.dbf";
backup as copy reuse
datafile 1 auxiliary format
"/u01/app/oracle/oradata/DG/system01.dbf" datafile
2 auxiliary format
"/u01/app/oracle/oradata/DG/sysaux01.dbf" datafile
3 auxiliary format
"/u01/app/oracle/oradata/DG/undotbs01.dbf" datafile
4 auxiliary format
"/u01/app/oracle/oradata/DG/users01.dbf" datafile
5 auxiliary format
"/u01/app/oracle/oradata/DG/example01.dbf" ;
sql 'alter system archive log current';
}
executing Memory Script

executing command: SET NEWNAME

renamed tempfile 1 to /u01/app/oracle/oradata/DG/temp01.dbf in control file

executing command: SET NEWNAME

Starting backup at 21-SEP-19
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00001 name=/u01/app/oracle/oradata/PROD1/system01.dbf
output file name=/u01/app/oracle/oradata/DG/system01.dbf tag=TAG20190921T171443
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:23
channel ORA_DISK_1: starting datafile copy
input datafile file number=00002 name=/u01/app/oracle/oradata/PROD1/sysaux01.dbf
output file name=/u01/app/oracle/oradata/DG/sysaux01.dbf tag=TAG20190921T171443
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:11
channel ORA_DISK_1: starting datafile copy
input datafile file number=00005 name=/u01/app/oracle/oradata/PROD1/example01.dbf
output file name=/u01/app/oracle/oradata/DG/example01.dbf tag=TAG20190921T171443
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:38
channel ORA_DISK_1: starting datafile copy
input datafile file number=00003 name=/u01/app/oracle/oradata/PROD1/undotbs01.dbf
output file name=/u01/app/oracle/oradata/DG/undotbs01.dbf tag=TAG20190921T171443
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile file number=00004 name=/u01/app/oracle/oradata/PROD1/users01.dbf
output file name=/u01/app/oracle/oradata/DG/users01.dbf tag=TAG20190921T171443
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 21-SEP-19

sql statement: alter system archive log current

contents of Memory Script:
{
backup as copy reuse
archivelog like "/u01/app/oracle/fast_recovery_area/PROD1/archivelog/2019_09_21/o1_mf_1_9_grctj6gy_.arc" auxiliary format
"/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_%u_.arc" archivelog like
"/u01/app/oracle/fast_recovery_area/PROD1/archivelog/2019_09_21/o1_mf_1_10_grctprql_.arc" auxiliary format
"/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_%u_.arc" ;
catalog clone recovery area;
switch clone datafile all;
}
executing Memory Script

Starting backup at 21-SEP-19
using channel ORA_DISK_1
channel ORA_DISK_1: starting archived log copy
input archived log thread=1 sequence=9 RECID=4 STAMP=1019582086
output file name=/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_07ucb5qs_.arc RECID=0 STAMP=0
channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting archived log copy
input archived log thread=1 sequence=10 RECID=5 STAMP=1019582296
output file name=/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_08ucb5qt_.arc RECID=0 STAMP=0
channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:02
Finished backup at 21-SEP-19

searching for all files in the recovery area

List of Files Unknown to the Database
=====================================
File Name: /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_07ucb5qs_.arc
File Name: /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_08ucb5qt_.arc
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_07ucb5qs_.arc
File Name: /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_08ucb5qt_.arc

List of files in Recovery Area not managed by the database
==========================================================
File Name: /u01/app/oracle/fast_recovery_area/DG/control02.ctl
RMAN-07526: Reason: File is not an Oracle Managed File

number of files not managed by recovery area is 1, totaling 9.28MB

datafile 1 switched to datafile copy
input datafile copy RECID=2 STAMP=1019582304 file name=/u01/app/oracle/oradata/DG/system01.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=3 STAMP=1019582304 file name=/u01/app/oracle/oradata/DG/sysaux01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=4 STAMP=1019582304 file name=/u01/app/oracle/oradata/DG/undotbs01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=5 STAMP=1019582304 file name=/u01/app/oracle/oradata/DG/users01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=6 STAMP=1019582304 file name=/u01/app/oracle/oradata/DG/example01.dbf

contents of Memory Script:
{
set until scn 879213;
recover
standby
clone database
delete archivelog
;
}
executing Memory Script

executing command: SET until clause

Starting recover at 21-SEP-19
using channel ORA_AUX_DISK_1

starting media recovery

archived log for thread 1 with sequence 9 is already on disk as file /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_07ucb5qs_.arc
archived log for thread 1 with sequence 10 is already on disk as file /u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_08ucb5qt_.arc
archived log file name=/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_9_07ucb5qs_.arc thread=1 sequence=9
archived log file name=/u01/app/oracle/fast_recovery_area/DG/archivelog/2019_09_21/o1_mf_1_10_08ucb5qt_.arc thread=1 sequence=10
media recovery complete, elapsed time: 00:00:03
Finished recover at 21-SEP-19
Finished Duplicate Db at 21-SEP-19

RMAN>

17、 Duplicate完成后，在备库启用实时ADG

SQL> select database_role,open_mode from v$database;

DATABASE_ROLE OPEN_MODE
---------------- --------------------
PHYSICAL STANDBY READ ONLY

SQL> recover managed standby database using current logfile disconnect from session;
Media recovery complete.
SQL> select database_role,open_mode from v$database;

DATABASE_ROLE OPEN_MODE
---------------- --------------------
PHYSICAL STANDBY READ ONLY WITH APPLY

SQL> select switchover_status,database_role,open_mode from v$database;

SWITCHOVER_STATUS DATABASE_ROLE OPEN_MODE
-------------------- ---------------- --------------------
NOT ALLOWED PHYSICAL STANDBY READ ONLY WITH APPLY

此时数据库状态时READ ONLY WITH APPLY，即只读且实时应用日志，通常所说的ADG，Active Data Guard。

READ ONLY WITH APPLY表示备库处于READ ONLY状态的同时可以接收主库传过来的日志文件并进行恢复，以便备库可以即时查看到主库的变化。

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