Oracle 10g Standby Database
--------------------------------------
PRODUCTION DATABASE: 10.100.0.65
STANDBY DATABASE: 10.100.0.32
-----------------I. Before you get started:-------------------
1. Make sure the operating system and platform architecture on the primary and standby systems are the same;
2. Install Oracle database software without the starter database on the standby server and patch it if necessary. Make sure the same Oracle software release is used on the Primary and Standby databases, and Oracle home paths are identical.
---------II. On the Primary Database Side:---------------------
Enable forced logging on your primary database:
Select FORCE_LOGGING from V$DATABASE;
ALTER DATABASE FORCE LOGGING;
1) The size of the standby redo log files should match the size of the current Primary database online redo log files. To find out the size of your online redo log files:
SQL> select bytes from v$log;
BYTES
----------
52428800
52428800
52428800
2) Use the following command to determine your current log file groups:
SQL> select group#, member from v$logfile;
3) Create standby Redo log groups.
My primary database had 5 log file groups originally and I created 5 standby redo log groups using the following commands:
ALTER DATABASE ADD STANDBY LOGFILE GROUP 6 SIZE 50M;
ALTER DATABASE ADD STANDBY LOGFILE GROUP 7 SIZE 50M;
ALTER DATABASE ADD STANDBY LOGFILE GROUP 8 SIZE 50M;
ALTER DATABASE ADD STANDBY LOGFILE GROUP 9 SIZE 50M;
ALTER DATABASE ADD STANDBY LOGFILE GROUP 10 SIZE 50M;
4) To verify the results of the standby redo log groups creation, run the following query:
SQL>select * from v$standby_log;
-----------NO NEED--------------5) Enable Archiving on Primary.
If your primary database is not already in Archive Log mode, enable the archive log mode:
SQL>shutdown immediate;
SQL>startup mount;
SQL>alter database archivelog;
SQL>alter database open;
SQL>archive log list;
6) Set Primary Database Initialization Parameters
Create a text initialization parameter file (PFILE) from the server parameter file (SPFILE), to add the new primary role parameters.
A) Create pfile from spfile for the primary database:
SQL>create pfile='d:\oracle\product\10.2.0\db_1\database\INITSNS6.ORA' from spfile;
B) Edit INITSNS6.ora to add the new primary and standby role parameters:
select * from v$parameter where name like '%log_archive_format%';
select * from v$parameter where name like '%standby%';
select * from v$parameter where name like '%remote_archive_enable%';
select * from v$parameter where name like '%log_archive_dest_state_%';
select * from v$parameter where name like '%convert%';
----------------------INITSNS1011.ORA------------------
sns6.__db_cache_size=1006632960
sns6.__java_pool_size=8388608
sns6.__large_pool_size=8388608
sns6.__shared_pool_size=645922816
sns6.__streams_pool_size=0
*.audit_file_dest='d:\oracle\product\10.2.0\admin\sns1011\adump'
*.audit_trail='DB'
*.background_dump_dest='d:\oracle\product\10.2.0\admin\sns1011\bdump'
*.compatible='10.2.0.3.0'
*.control_files='e:\snsd1011\control01.ora','e:\snsd1011\control02.ora','e:\snsd1011\control03.ora'
*.core_dump_dest='d:\oracle\product\10.2.0\admin\sns1011\cdump'
*.db_block_size=16384
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='sns1011'
*.job_queue_processes=35
*.LOG_ARCHIVE_CONFIG='DG_CONFIG=(sns1011,sns1011sby)'
*.LOG_ARCHIVE_DEST_1='LOCATION=D:\archive0910\sns1011\arch VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=sns1011'
*.LOG_ARCHIVE_DEST_2='SERVICE=sns1011sby LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=sns1011sby'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=ENABLE
*.LOG_ARCHIVE_MAX_PROCESSES=30
*.FAL_SERVER=sns1011sby
*.FAL_CLIENT=sns1011
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_FILE_NAME_CONVERT='c:\oracle\product\10.2.0\admin\sns1011sby','d:\oracle\product\10.2.0\admin\sns1011'
*.LOG_FILE_NAME_CONVERT='c:\oracle\product\10.2.0\admin\sns1011sby','d:\oracle\product\10.2.0\admin\sns1011'
*.log_archive_format='ARC%S_%R.%T'
*.open_cursors=300
*.pga_aggregate_target=337641472
*.processes=500
*.remote_login_passwordfile='EXCLUSIVE'
*.sessions=555
*.sga_max_size=1677721600
*.sga_target=1677721600
*.smtp_out_server='mail.uniconindia.in'
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='d:\oracle\product\10.2.0\admin\sns1011\udump'
*.utl_file_dir='d:\ldoutput'
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=sns1011XDB)'
-------------------
C. Create spfile from pfile, and restart primary database using the new spfile.
SQL> shutdown immediate;
SQL> startup nomount pfile='d:\oracle\product\10.2.0\db_1\database\INITSNS1011.ORA';
SQL>create spfile from pfile='d:\oracle\product\10.2.0\db_1\database\INITSNS1011.ORA';
SQL>shutdown immediate;
SQL>Startup;
7) CREATE STANDBY CONTROLFILE
SQL>shutdown immediate;
SQL>startup mount;
SQL>alter database create standby controlfile as 'C:\SBY.ORA';
SQL>ALTER DATABASE OPEN;
8) take target db backup using rman and restore to standby
run RMAN backup script
----------------III. On the Standby Database Site:---------------
1. CREATE STANDBY DATABASE WITHOUT STARTUP DATABASE
2. Create directory STRUCTURE SAME AS PRIMARY DATABASE for data files. ALSO Create directory (multiplexing) for online logs.
create all required directories for dump and archived log destination:
Create directories adump, bdump, cdump, udump, and archived log destinations for the standby database.
3. Copy the Primary DB pfile to Standby server and rename/edit the file.
1) Copy INITSNS1011.ora from Primary server to Standby server, to database folder C:\oracle\product\10.2.0\db_1\database.
2) Rename it to INITSNS1011SBY.ORA, and modify the file as follows
NOTE: The db_name in the standby's init file should be the same as the primary database.
--------------------------INITSNS1011SBY.ORA----------------------
sns6.__db_cache_size=1207959552
sns6.__java_pool_size=8388608
sns6.__large_pool_size=8388608
sns6.__shared_pool_size=343932928
sns6.__streams_pool_size=0
*.audit_file_dest='c:\oracle\product\10.2.0\admin\sns1011sby\adump'
*.background_dump_dest='c:\oracle\product\10.2.0\admin\sns1011sby\bdump'
*.compatible='10.2.0.3.0'
*.control_files='e:\snsd1011\control01.ora','e:\snsd1011\control02.ora','e:\snsd1011\control03.ora'
*.core_dump_dest='c:\oracle\product\10.2.0\admin\sns1011sby\cdump'
*.db_block_size=16384
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='sns1011sby'
*.job_queue_processes=35
*.LOG_ARCHIVE_CONFIG='DG_CONFIG=(sns1011sby,sns1011)'
*.LOG_ARCHIVE_DEST_1='LOCATION=D:\archive0910\sns1011sby\arch VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=sns1011sby'
*.LOG_ARCHIVE_DEST_2='SERVICE=sns1011 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=sns1011sby'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=ENABLE
*.LOG_ARCHIVE_MAX_PROCESSES=30
*.FAL_SERVER=sns1011
*.FAL_CLIENT=sns1011sby
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_FILE_NAME_CONVERT='d:\oracle\product\10.2.0\admin\sns1011','c:\oracle\product\10.2.0\admin\sns1011sby'
*.LOG_FILE_NAME_CONVERT='d:\oracle\product\10.2.0\admin\sns1011','c:\oracle\product\10.2.0\admin\sns1011sby'
*.log_archive_format='ARC%S_%R.%T'
*.open_cursors=300
*.pga_aggregate_target=337641472
*.processes=500
*.remote_login_passwordfile='EXCLUSIVE'
*.sessions=555
*.sga_max_size=1572864000
*.sga_target=1572864000
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*._ALLOW_RESETLOGS_CORRUPTION=TRUE
*.user_dump_dest='c:\oracle\product\10.2.0\admin\sns1011sby\udump'
*.utl_file_dir='e:\ldoutput'
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=sns1011SBYXDB)'
--------------------------------------------------------
4. Copy the Primary password file to standby and rename it to pwdsns6SBY.ora.
TO C:\oracle\product\10.2.0\db_1\database.
5. Copy the standby control file 'SBY.ORA' from primary to standby destinations ;
6. For Windows, create a Windows-based services (optional):
$oradim –NEW –SID SNS1011SBY –STARTMODE manual
7. Configure listeners for the primary and standby databases.
--------------TNSNAMES.ORA--PRIMARY---------
SNS1011 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.65)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(Sid = SNS1011)
)
)
SNS1011SBY =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.32)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(Sid = SNS1011sby)
)
)
-----------------LISTENER.ORA----PRIMARY--------
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(PROGRAM = EXTPROC)
(SID_NAME = PLSExtProc)
(ORACLE_HOME = d:\oracle\product\10.2.0\db_1)
)
(SID_DESC =
(GLOBAL_DBNAME = SNS1011)
(ORACLE_HOME = d:\oracle\product\10.2.0\db_1)
(SID_NAME = SNS1011)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.65)(PORT = 1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.32)(PORT = 1522))
)
)
--------------TNSNAMES.ORA--STANDBY---------
SNS1011SBY =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.32)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = SNS1011sby)
)
)
SNS1011 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.65)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = SNS1011)
)
)
-----------------LISTENER.ORA----STANDBY--------
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(PROGRAM = EXTPROC1)
(SID_NAME = PLSExtProc1)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
)
(SID_DESC =
(GLOBAL_DBNAME = SNS1011sby)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(SID_NAME = SNS1011sby)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.32)(PORT = 1522))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.0.65)(PORT = 1521))
)
)
------------------------
8.
RESTART LISTENER ON PRIMARY AND STANDBY DATABASE
LSNRCTL>RELOAD
CHECK TNSPING ON PRIMARY AND STANDBY DATABASE
$tnsping SNS1011
$tnsping SNS1011SBY
9. On Standby server, setup the environment variables to point to the Standby database.
Set up ORACLE_HOME and ORACLE_SID.
set ORACLE_SID=sns6sby
oradim -new -sid sns6sby -SRVC OracleServicesns6sby -intpwd oracle -MAXUSERS 5 -STARTMODE auto -PFILE c:\oracle\product\10.2.0\db_1\database\initsns6sby.ora
10. Start up nomount the standby database and generate a spfile.
SQL>startup nomount pfile='C:\oracle\product\10.2.0\db_1\database\INITSNS1011sby.ORA';
SQL>create spfile from pfile='C:\oracle\product\10.2.0\db_1\database\INITSNS1011sby.ORA';
SQL>shutdown immediate;
SQL>startup mount;
11.
SET ORACLE_SID=sns6sby
RMAN TARGET SYS/ORACLE@SNS1011SBY
RESTORE CONTROLFILE FROM 'C:\SBY.ORA';
catalog backuppiece 'c:\05LICVI0';
restore database;
12. DUPLICATE DATABASE
NOTE: TARGET DB SHOULD BE MOUNT AND STANDBY SHOULD BE NOMOUNT STATE
rman target sys/oracle@SNS1011 auxiliary sys/oracle@SNS1011sby
RMAN>
run{
allocate channel c1 type disk;
allocate channel c2 type disk;
allocate channel c3 type disk;
allocate channel c4 type disk;
allocate auxiliary channel stby type disk;
duplicate target database for standby;
release channel c1;
release channel c2;
release channel c3;
release channel c4;
}
13. Start Redo apply
1) On the standby database, to start redo apply:
SQL>alter database recover managed standby database disconnect from session;
-----
If you ever need to stop log apply services:
SQL> alter database recover managed standby database cancel;
-------
14. Verify the standby database is performing properly:
A) On Standby perform a query:
SQL>select sequence#, first_time, next_time from v$archived_log;
B) On Primary, force a logfile switch:
SQL>alter system switch logfile;
C) On Standby, verify the archived redo log files were applied:
SQL>
15. If you want the redo data to be applied as it is received without waiting for the current standby redo log file to be archived, enable the real-time apply.
on standby database
shut immediate;
startup mount
alter database recover managed standby database disconnect;
alter database recover managed standby database cancel;
alter database recover managed standby database disconnect;
alter database recover managed standby database cancel;
alter database open;
alter database recover managed standby database using current logfile disconnect;
on primary only one time
alter system switch logfile;
alter system switch logfile;
16. To create multiple standby databases, repeat this procedure.
17) Failover
SELECT THREAD#, LOW_SEQUENCE#, HIGH_SEQUENCE# FROM V$ARCHIVE_GAP;
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH;
ALTER DATABASE ACTIVATE STANDBY DATABASE;
ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY;
--------------------
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