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Data Guard Physical Standby Setup in Oracle Database 11g Release 2
Environment to prepare
| The host name | ip | DB Version | db_name | db_unique_name | |
| The main library | orcl | 192.168.56.120 | 11.2.0.4 | orcl | orcl |
| For the library | orcl_stby | 192.168.56.121 | 11.2.0.4 | orcl | orcl_stby |
Notes:
1. Db_unique_name The active and standby databases must be different.
2. The db_name must be the same as that of the active and standby databases.
3. The DB versions of the active and standby databases must be consistent.
Preparing the Primary Database for Standby Database Creation
1.Enable Archiving
SHUTDOWN IMMEDIATE;
STARTUP MOUNT;
ALTER DATABASE ARCHIVELOG;
ALTER DATABASE OPEN;
SELECT LOG_MODE FROM V$DATABASE;
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2.Enable Forced Logging
ALTER DATABASE FORCE LOGGING;
SELECT FORCE_LOGGING FROM V$DATABASE;
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3.Create a Backup Copy of the Primary Database Datafiles(RMAN)
##create backup directory
mkdir -p /backup
chown -R oracle:oinstall /backup
chmod 775 /backup
##create rman backup script
su - oracle
echo '#! /bin/sh' >>/backup/rman_backup_forstby.sh
echo 'source ~/.bash_profile' >>/backup/rman_backup_forstby.sh
echo 'backtime=`date +"20%y%m%d%H%M%S"`' >>/backup/rman_backup_forstby.sh
echo "rman target / log=/backup/rman_backup_forstby_\${backtime}.log<<EOF" >>/backup/rman_backup_forstby.sh
echo 'run {' >>/backup/rman_backup_forstby.sh
echo 'allocate channel c1 device type disk; ' >>/backup/rman_backup_forstby.sh
echo 'allocate channel c2 device type disk; ' >>/backup/rman_backup_forstby.sh
echo 'allocate channel c3 device type disk; ' >>/backup/rman_backup_forstby.sh
echo 'allocate channel c4 device type disk; ' >>/backup/rman_backup_forstby.sh
echo 'crosscheck backup; ' >>/backup/rman_backup_forstby.sh
echo 'crosscheck archivelog all; ' >>/backup/rman_backup_forstby.sh
echo 'sql "alter system switch logfile"; ' >>/backup/rman_backup_forstby.sh
echo 'delete noprompt expired backup; ' >>/backup/rman_backup_forstby.sh
echo 'delete noprompt obsolete device type disk; ' >>/backup/rman_backup_forstby.sh
echo "backup database format '/backup/FULL_%U.bak';" >>/backup/rman_backup_forstby.sh
echo "backup archivelog all format '/backup/ARC_%U.bak';" >>/backup/rman_backup_forstby.sh
echo 'release channel c1; ' >>/backup/rman_backup_forstby.sh
echo 'release channel c2; ' >>/backup/rman_backup_forstby.sh
echo 'release channel c3; ' >>/backup/rman_backup_forstby.sh
echo 'release channel c4; ' >>/backup/rman_backup_forstby.sh
echo '} ' >>/backup/rman_backup_forstby.sh
echo 'EOF' >>/backup/rman_backup_forstby.sh
##begin rman backup
chmod +x /backup/rman_backup_forstby.sh
nohup /backup/rman_backup_forstby.sh >/dev/null 2>&1 &
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4.Create a Control File for the Standby Database
ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/tmp/stby_ctrl.ctl';
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5.Create a Parameter File for the Standby Database
CREATE PFILE='/tmp/initstby.ora' FROM SPFILE;
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6.Copy Files from the Primary System to the Standby System
a.Copy the Backup datafiles
##Standby create /backup dir
mkdir /backup
chown oracle:oinstall /backup
chmod 775 /backup
##Primary copy backup files
scp *bak /backup/oracle@orcl_stby:/backup
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b.Copy the remote login password file
##ORACLE_HOME must be the same dir on primary and standby first
scp $ORACLE_HOME/dbs/orapworcl oracle@orcl_stby:$ORACLE_HOME/dbs
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c.Copy the Standby control file
scp stby_ctrl.ctl oracle@orcl_stby:/tmp
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d.Copy the Initialization parameter file
scp initstby.ora oracle@orcl_stby:/tmp/
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7.Configure listeners for the primary and standby databases
Configure hosts for the primary and standby databases
##Botn Primary and standby Set
vi /etc/hosts
#Add Public IP192.168.56.120 former 192.168.56.121 orcl_stbyCopy the code
##Botn Primary and standby Set listener.ora
vi $TNS_ADMIN/listener.ora
##ADDSID_LIST_LISTENER = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = former) (ORACLE_HOME = / u01 / app/oracle/product / 11.2.0 / db) (SID_NAME = orcl) ) )##Then restart listener
lsnrctl stop
lsnrctl start
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8.Create Oracle Net service names.
##Botn Primary and standby Set tnsnames.ora
vi $TNS_ADMIN/tnsnames.ora
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = orcl)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
ORCL_STBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = orcl_stby)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl_stby)
)
)
##Test tnsping and sqlplus
tnsping orcl
tnsping orcl_stby
sqlplus sys/oracle@orcl as sysdba
sqlplus sys/oracle@orcl_stby as sysdba
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9.Add Standby redo log for the Standby Database
set line222
col member for a60
select t2.thread#,t1.group#,t1.member,t2.bytes/1024/1024 from gv$logfile t1,gv$log t2 where t1.group#=t2.group#;
THREAD# GROUP# MEMBER T2.BYTES/1024/1024
---------- ---------- ------------------------------------------------------------ ------------------
1 3 /oradata/orcl/redo03.log 120
1 2 /oradata/orcl/redo02.log 120
1 1 /oradata/orcl/redo01.log 120
-- Note:
--1. The size of stanby log is the same as that of redo log
--2. Stanby log quantity:
standby logfile=(1+Logfile group number)*thread=(1+3)*1=4Group, need to add4Set of standby logfile.If the log is rac, add a standby log for each thread
ALTER DATABASE ADD STANDBY LOGFILE thread 1
group 4 ('/oradata/orcl/standby_redo04.log') SIZE 120M,
group 5 ('/oradata/orcl/standby_redo05.log') SIZE 120M,
group 6 ('/oradata/orcl/standby_redo06.log') SIZE 120M,
group 7 ('/oradata/orcl/standby_redo07.log') SIZE 120M;
Copy the codePreparing the Standby Database for Standby Database Creation
1.Configure Parameter File for the Standby Database
vi /tmp/initstby.ora
##ADD
*.standby_file_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.db_unique_name=orcl_stby
*.fal_client='ORCL_STBY'
*.fal_server='ORCL'
*.log_archive_config='DG_CONFIG=(ORCL_STBY,ORCL)'
*.log_archive_dest_1='LOCATION=/archivelog VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=ORCL_STBY'
*.log_archive_dest_2='SERVICE=orcl LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=ORCL'
*.log_file_name_convert='/oradata/orcl'.'/oradata/orcl'
*.db_file_name_convert='/oradata/orcl'.'/oradata/orcl'
*.log_archive_dest_state_2='ENABLE'
*.log_archive_format='%t_%s_%r.arc'
*.log_archive_max_processes=4
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2.Create a server parameter file for the standby database
create spfile from pfile='/tmp/initstby.ora';
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Create Physical Standby Database
1.Start the Physical Standby Database nomount
startup nomount
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2.Restore Standby From RMAN Backup
a.Restore Standby Controlfile from RMAN Backup
restore standby controlfile from '/tmp/stby_ctrl.ctl';
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b.mount Standby database
alter database mount;
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c.Restore standby database
##create rman restore script
su - oracle
echo '#! /bin/sh' >>/backup/rman_restore_forstby.sh
echo 'source ~/.bash_profile' >>/backup/rman_restore_forstby.sh
echo 'backtime=`date +"20%y%m%d%H%M%S"`' >>/backup/rman_restore_forstby.sh
echo "rman target / log=/backup/rman_restore_forstby_\${backtime}.log<<EOF" >>/backup/rman_restore_forstby.sh
echo 'run {' >>/backup/rman_restore_forstby.sh
echo 'allocate channel c1 device type disk; ' >>/backup/rman_restore_forstby.sh
echo 'allocate channel c2 device type disk; ' >>/backup/rman_restore_forstby.sh
echo 'allocate channel c3 device type disk; ' >>/backup/rman_restore_forstby.sh
echo 'allocate channel c4 device type disk; ' >>/backup/rman_restore_forstby.sh
echo 'restore database; ' >>/backup/rman_restore_forstby.sh
echo 'release channel c1; ' >>/backup/rman_restore_forstby.sh
echo 'release channel c2; ' >>/backup/rman_restore_forstby.sh
echo 'release channel c3; ' >>/backup/rman_restore_forstby.sh
echo 'release channel c4; ' >>/backup/rman_restore_forstby.sh
echo '} ' >>/backup/rman_restore_forstby.sh
echo 'EOF' >>/backup/rman_restore_forstby.sh
##begin rman backup
chmod +x /backup/rman_restore_forstby.sh
nohup /backup/rman_restore_forstby.sh >/dev/null 2>&1 &
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d.check standby database file
select name from v$datafile
union
select name from v$controlfile
union
select member from v$logfile
union
select name from v$tempfile;
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3.Configure Primary database Parameter
-- Set the DG parameter
ALTER SYSTEM SET LOG_ARCHIVE_CONFIG='DG_CONFIG=(ORCL,ORCL_STBY)';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_1='LOCATION=/archivelog VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=ORCL';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_2='SERVICE=orcl_stby ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=ORCL_STBY';
ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2=ENABLE;
ALTER SYSTEM SET LOG_ARCHIVE_FORMAT='%t_%s_%r.arc' SCOPE=SPFILE;
ALTER SYSTEM SET LOG_ARCHIVE_MAX_PROCESSES=4;
ALTER SYSTEM SET REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE SCOPE=SPFILE;
ALTER SYSTEM SET FAL_SERVER=ORCL_STBY;
ALTER SYSTEM SET FAL_CLIENT=ORCL;
ALTER SYSTEM SET DB_FILE_NAME_CONVERT='/oradata/orcl'.'/oradata/orcl' SCOPE=SPFILE;
ALTER SYSTEM SET LOG_FILE_NAME_CONVERT='/oradata/orcl'.'/oradata/orcl' SCOPE=SPFILE;
ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=AUTO;
Copy the code4.Open Standby Database and Start Redo Apply
alter database open;
alter database recover managed standby database using current logfile disconnect from session;
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5.check Standby database
set line222
col member for a60
select open_mode,database_role from v$database;
select process,group#,thread#,sequence# from v$managed_standby;
select t1.group#,t1.thread#,t1.bytes/1024/1024,t1.status,t2.member from gv$standby_log t1,gv$logfile t2 where t1.group#=t2.group#;
select open_mode,database_role,protection_mode,protection_level,switchover_status from v$database;
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