10g Primary Performace - extra physical standbys

Hi
I have a 10g 3 node RAC primary db to a 3 node RAC standby (physical) db. (in SYNC mode delay = 0)
The SLA for the app is extremely tight.
I need to add 2 more standby databases (physical) in ASYNC mode.
Does anyone have any performance metrics on primary db performance when adding extra standby databases.
There is an oracle node about cascading standby db's in RAC environment (which suggests you shouldn't due to different redo streams).
Where will the bottleneck be ..... if any...

hello,
I need to add 2 more standby databases (physical) in ASYNC mode.
Does anyone have any performance metrics on primary db performance when adding extra standby databases.
its depends on several things
1. on the workload vs the cpu, memory,storage performance
2. the size of your database
3. network performance
4. if you have recent backup, will reduce the time and impact on primary db
There is an oracle node about cascading standby db's in RAC environment (which suggests you shouldn't due to different redo streams).
Where will the bottleneck be ..... if any...if you are using cascading standby db, then the workload of redo transport will be off the primary.
BUT "Cascaded Redo Transport Destinations... Releases prior to 11.2.0.2 have several limitations for this feature that are not present in release 11.2.0.2."
Tobi
HTH

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10g Primary database work with a 11g Standby database

Can a 10g Primary database work with a 11g Standby database?
The existing database is Oracle 10g and I don't want to upgrade it. But I really need the Real-time Query feature of 11g Physical Standby Database.
Can they work together?

Hi,
do you have any proof?
I never find any proof in Oracle Docs.Kindly refer to doc's and check things it states Primary and Standby Servers Versions must be same - similar to that you can find very much clear. That is more than enough for proof else Test it you will find your self...;-).
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http://oracleinternals.blogspot.com/

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Hi Experts,
How many physical standbys can be created from primary in one data guard environment? Why LOG_ARCHIVE_CONFIG limits up to 9 unique database names? Thanks.

Victor Jin-Oracle wrote:
Hi Experts,
How many physical standbys can be created from primary in one data guard environment? Why LOG_ARCHIVE_CONFIG limits up to 9 unique database names? Thanks.
Post the source of your information abouit the limit of 9 names.
Even the Oracle doc shows 1..30 names in the same provided although that doesn't necessarily indicate a limit.
https://docs.oracle.com/database/121/REFRN/refrn10237.htm

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Hi,
I've set up the Dataguard with one primary on machine A and 2 physical standbys on the same machine B.
Note: the Dataguard worked fine with one primary and one phy standby on the separate machines.
The problem I have is the Redo Logs can only applied to either one of the phy stdbys.
Which one started 1st, then that phy stdby can apply the Redo Log.
The redo logs have been transferred to both phy stdbys successfully but ONLY one phy stdby can apply the Redo Logs.
Anyone got this experience, pls point out. Thanks.
QN
The error in the alert file is below:
ORA-01110: data file 1: '/u01/DG/system01.dbf'
ORA-27086: unable to lock file - already in use
SVR4 Error: 11: Resource temporarily unavailable
Additional information: 8
Additional information: 3619
Wed Aug 15 14:22:13 2007
Errors in file /oracle/admin/LSSTDBY/bdump/lsstdby_dbw0_4574.trc:
ORA-01157: cannot identify/lock data file 2 - see DBWR trace file
ORA-01110: data file 2: '/u01/DG/undotbs01.dbf'
ORA-27086: unable to lock file - already in use
SVR4 Error: 11: Resource temporarily unavailable
Additional information: 8
Additional information: 3619
Wed Aug 15 14:22:13 2007
Errors in file /oracle/admin/LSSTDBY/bdump/lsstdby_dbw0_4574.trc:
ORA-01157: cannot identify/lock data file 3 - see DBWR trace file
ORA-01110: data file 3: '/u01/DG/sysaux01.dbf'
ORA-27086: unable to lock file - already in use
SVR4 Error: 11: Resource temporarily unavailable
Additional information: 8
Additional information: 3619
MRP0: Background Media Recovery terminated with error 1110
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Errors in file /oracle/admin/LSSTDBY/bdump/lsstdby_mrp0_4616.trc:
ORA-01110: data file 1: '/u01/DG/system01.dbf'
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: '/u01/DG/system01.dbf'
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ORA-01110: data file 1: '/u01/DG/system01.dbf'
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
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Thanks a lot for asking me questions. Thus I understand my problem.
I checked the locations of datafiles of both phy stdbys, I saw they use the same datafiles.
Because when I created the phy standby, I shutdown the pri, copy a COLD backup of the pri to the stdby, then startup mount db. This is not right. The directories of the datafiles are not the same.
I'm not clear about how to create a phy stdby if their directories of the datafiles are different.
Thanks.

DataGuard (1 primary and 2 physical stdby)

Hi everybody,
could someone be so kind to point me to a doc explaining how to set up DataGuard with a primary and 2 physical stdbys ?
we have to modify the current configuration (1 primary and 1 physical stdby), adding a second physical stdby, and I'm not sure about whether there are 'special steps' to follow...
Thanks in advance.

uhm guess you're referring to section E Cascaded Destinations...
quite honestly, I have always skipped this part, at least so far, since I've never had to use this
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thanks

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hi
i want to create two standby (physical) and one primary dataguard.
so please tell me what is sequence for db_file_name_convert and db_file_name_convert.
i mean how i will give database name or path in this parameter.

Hello;
One option is Data Guard Cascading Standby.
Here are my complete test notes if it help :
http://www.visi.com/~mseberg/Data_Guard_Cascading_Standby_Setup_and_Test.pdf
Best Regards
mseberg

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I try to setup this env but fails. I want to know more related issues about create Primary DB /Physical DB/Logical DB on the same host and how to configure between them.
Below steps is my try:
1. Create Primary DB on the /scratch/primary_db
2. Create Physical Db software only on the /scratch/physical_db
3. Create Logical Db software only on the /scratch/logical_db
4. Using EM Wizard to create physical standby database and logical standby database, and these two targets can show up on the "All Targets" Page.
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Issues:
So I want to know about how to configure physical db and logical db's listener using EM or manually?
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Hi,
As this a test case then you need to create two more listener for each Oracle Home (/scratch/physical_db & /scratch/logical_db) make sure that they have different names and ports.
Then add the new listeners manually using GC?
Try it and let me know
Regards
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Regards,
Asif Abbasi

Note the requirement that the 10g database be running with COMPATIBLE set to 9.2 in order to permit a downgrade to 9.2. That would be a pretty unusual setting for a 10g database to have unless you had just upgraded it from 9.2 to 10.2. The last step of the upgrade process is generally to update the COMPATIBLE parameter.
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Restore primary database using physical standby

hi,
i am taking rman backup on production database,we have physical standby.coming month i have to take backup from standby instead of prod db.pls advise me, is it possible to restore and recover production database using standby database backup.if production crashed.pls advise me .i am new to dba.if possible pls provide proper steps.
Regards
Faruk

Faruk.m wrote:
hi,
i have to take backup on standby instead of production.failover i can do.but i need to know the recovery procedures from standby.and thank u for reply.i want, is it possible to restore my production controlfile with controlfile backup from standby.
i tested with my local database ,that below:
1.backup with controlfile from standby (rman>backup current controlfile)
2.manual deleted my test db controlfile,tried to restore from backup taken from standby(rman>restore controlfile from '*****************';)
3.rman>restore database
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my conclusion:above my cmds used to create datafiles on standby becoz i restored with standby controlfile.
my question:what is wrong with my steps? and how to restore my (prod) controlfile from standby.and bring backup my prod db.
regards
farukHi Faruk,
Sorry my late.
I can share with you my test.
It is my standby database, I connecting with RMAN
SQL> select database_role, db_unique_name, name from v$database;
DATABASE_ROLE      DB_UNIQUE_NAME           NAME
PHYSICAL STANDBY       stldb                    ADMDB
[oracle@oel62-x64 oradata]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 12:23:00 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: ADMDB (DBID=4063877183, not open)
RMAN> backup current controlfile;
Starting backup at 23-APR-13
Starting implicit crosscheck backup at 23-APR-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=29 device type=DISK
Finished implicit crosscheck backup at 23-APR-13
Starting implicit crosscheck copy at 23-APR-13
using channel ORA_DISK_1
Finished implicit crosscheck copy at 23-APR-13
searching for all files in the recovery area
cataloging files...
no files cataloged
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
channel ORA_DISK_1: starting piece 1 at 23-APR-13
channel ORA_DISK_1: finished piece 1 at 23-APR-13
piece handle=/u01/app/oracle/fast_recovery_area/stldb/STLDB/backupset/2013_04_23/o1_mf_ncnnf_TAG20130423T122310_8qdfq19x_.bkp tag=TAG20130423T122310 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 23-APR-13
RMAN> exit
Recovery Manager complete.
[oracle@oel62-x64 oradata]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue Apr 23 12:23:26 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> shut immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 551165952 bytes
Fixed Size              2230232 bytes
Variable Size            167774248 bytes
Database Buffers       377487360 bytes
Redo Buffers              3674112 bytes
SQL>
SQL>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@oel62-x64 oradata]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 12:34:58 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: ADMDB (not mounted)
RMAN> restore controlfile from '/u01/app/oracle/fast_recovery_area/stldb/STLDB/backupset/2013_04_23/o1_mf_ncnnf_TAG20130423T122310_8qdfq19x_.bkp';
Starting restore at 23-APR-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/app/oracle/oradata/stldb/control01.ctl
Finished restore at 23-APR-13
RMAN> alter database mount;
database mounted
released channel: ORA_DISK_1
RMAN> exit
Recovery Manager complete.
[oracle@oel62-x64 oradata]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue Apr 23 12:35:31 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select database_role, db_unique_name, name from v$database;
DATABASE_ROLE      DB_UNIQUE_NAME           NAME
PRIMARY       stldb                    ADMDB
As show here, you can backup standby control file, and restore as primary .
Regars
Mahir M. Quluzade
http://www.mahir-quluzade.com

One primary and two Physical standby

Hi everyone,
I want configure two separate Physical standby one work in Redo apply and one in log apply mode.
is it posible?

user011232 wrote:
Hi everyone,
I want configure two separate Physical standby one work in Redo apply and one in log apply mode.
is it posible?Yes it can possible very much. You have to configure as below in remote destinations.
Example_:-
Log_archive_dest_2='service= stby1 lgwr async ';
Log_archive_dest_3='service= stby2 arch async ';
What is the plan behind that? just for testing purpose? Even me too not tested but you can try configuring as above. :)
Edited by: CKPT on Feb 14, 2012 5:46 PM

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Hi all,
i have production setup as below
2 node 10gR2 RAC on win2K3 datafiles on ASM
Oracle Standard edition
On the standby site it will be a manual standby (since SE) .
Biz doesnt want the archives to be on local NTFS partition, hence the archives are on ASM. To resfresh the standby i need to transfer the archives through RMAN (catalog database is used) but facing issues when i take archive backup and put it on standby (error says that the files are already on storage) . So i am unable to refresh .
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thanks
[email protected]

So what I would do is this :
On the Primary :
alter system set log_archive_dest_state_2=defer;
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Startup mount and start recovery again and run you query again on that sequence.
If it finally clears enable the primary again.
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By chance does this show its waiting for a gap
select process, status, sequence#, block# from v$managed_standby;Best Regards
mseberg
Edited by: mseberg on Aug 23, 2011 8:38 AM

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Thanks!
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+++Administrator:b44b0000:b44b0002:----2011/04/05 11:07:17
-------------------- SQL Request:
<Logical SQL>
+++Administrator:b44b0000:b44b0002:----2011/04/05 11:07:17
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For example, below is UDML syntax for adding new column.
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Upgrading the primary and physical standby database

Solaris 9
oracle 9i (9.2.0.8)
upgrade to 10g (10.2.0.3)
Hi,
I would like to know how to upgrade database in dataguard envronment.(primary and remote physical standby database)
Is rolling upgrade possible in this case?
Or any steps or Document is appreciated.
Thanks.
Message was edited by:
user539835

Read this Metalink Note:407040.1

Switchover to 1 of 3 Physical Standby (oracle 10g R2)

Hi all,
Previously I already had done switchover primary to standby (only 1 Physical standby was in the configuration)
now i have some additional physical standbys (3 Physical standbys)
stby1
stby2
stby3
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Kindly suggest!
Best Regards,
Muhammad Shakeel Azeem

921542 wrote:
Hi all,
Previously I already had done switchover primary to standby (only 1 Physical standby was in the configuration)
now i have some additional physical standbys (3 Physical standbys)
stby1
stby2
stby3
i want to switch to stby1 ,what needs to be done at stby2,stby3 to make them capable of identifying stby1 as their new primary.
Kindly suggest!
Best Regards,
Muhammad Shakeel AzeemAzeem,
Welcome to OTN,
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http://www.oracle.com/technetwork/database/features/availability/maa10gr2multiplestandbybp-1-131937.pdf

How to upgrade the 10g Dataguard after the primary was upgraded to 11g

Hi
What is the best procedure to follow to upgrade my 10g physical Dataguard after the 10g primary was upgraded to 11g ?
I was planning on stopping archiving of hte primary prior to the upgrade and enable after.
Do I need to reastablish my Dataguard from scratch ??
Old verison : 10.2.0.4
New version : 11.2.0.1
Thanks in advance
Orna

Orna Weisman wrote:
Hi
What is the best procedure to follow to upgrade my 10g physical Dataguard after the 10g primary was upgraded to 11g ?
I was planning on stopping archiving of hte primary prior to the upgrade and enable after.
Do I need to reastablish my Dataguard from scratch ??
Old verison : 10.2.0.4
New version : 11.2.0.1Hope this helps :
http://www.oracle.com/technology/deploy/availability/htdocs/DataGuardOverview.html
http://www.oracle.com/technology/deploy/availability/maa/maa_wp_11g_upgrades_made_easy.pdf
http://www.oracle.com/technology/deploy/availability/pdf/maa_wp_11g_transientlogicalrollingupgrade.pdf
http://www.oracle.com/technology/deploy/availability/pdf/maa_wp_10gr2_rollingupgradebestpractices.pdf
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10g Primary Performace - extra physical standbys

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