RMAN in active data guard with real time apply ON without a catalog DB

I would like to know whether I can take RMAN backups (both level 0 & incremental) in active data guard with real time apply ON without a catalog database. version is 11.2.0.3.2. Will it make difference in the control file of standby syncing with primary? Can I use these backups on primary to restore and recover the database(including control file backup)?

Thank you very much msberg. Could you please answer the below queries as well?
Should I cancel Real Time Apply before starting RMAN?
Will it make difference in the control file of standby syncing with primary? Is it possible to use these backups on primary to restore and recover the database(including control file backup)? If possible, how will I do that?

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Active Data guard with R12.1.X

Hi
One of our customers wants to configure their EBS R12 Instance with Active Data guard
Current Architecture:
R12.0.6 with RDBMS 10.2.0.4
Projected Architecture:
R12.1.3 with 11.2.0.3 RDBMS with Active Data guard.
I have checked the MOS ID :
Using Active Data Guard Reporting with Oracle E-Business Suite Release 12.1 and Oracle Database 11g [ID 1070491.1]
Please share your ideas and doc id's to do this activity successfully.
Please share the docs to upgrade R12.0.6 to R12.1.1
Thanks
Shaik

One of our customers wants to configure their EBS R12 Instance with Active Data guard
Current Architecture:
R12.0.6 with RDBMS 10.2.0.4
Projected Architecture:
R12.1.3 with 11.2.0.3 RDBMS with Active Data guard.
I have checked the MOS ID :
Using Active Data Guard Reporting with Oracle E-Business Suite Release 12.1 and Oracle Database 11g [ID 1070491.1]
Please share your ideas and doc id's to do this activity successfully.The document you posted covers every thing in detail.
In details you can check
http://appsdbastuff.blogspot.com/2009/07/configuring-standby-databasedataguard.html
Disaster recovery for R12.1.1
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Gap resolution is not always happening with real time apply

Hi
I noticed a strange behavior in one of my 10.2.0.4 dataguards , and I am wondering if anyone else has encountered it :
When there is an archive gap that need to be resolved , the gap is NOT always being identified and acted upon , when the recovery is started as such :
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION.
its just sitting there doing nothing, and nothing is written to the alert log regarding the gap and nothing is being transferred from the primary as needed.
However, if I restart the apply , omitting the 'USING CURRENT LOGFILE' clause , the gap is identified and acted upon, as such :
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION.
At first I thought its merely due to me stopping and starting the apply process ( nothing like a "reboot" , right ? ) , but that is not the case.
if I restart , but still use the USING CURRENT LOGFILE clause , the gap is still not being identified .
Anyone had this issue ? any theories as to why that happens ?

Using Real-Time Apply to Apply Redo Data Immediately
http://docs.oracle.com/cd/E11882_01/server.112/e25608/log_apply.htm#i1022881
1.What is compatible parameter, it should be 11.1
2.Try to check parameters mentioned in below link:
http://easyoradba.com/2011/01/10/real-time-apply-in-oracle-data-guard-10g/
Regards
Girish Sharma
Edited by: Girish Sharma on Nov 15, 2012 12:37 PM

Starting a Physical Standby DB which is configured with real-time apply

Hi,
I wanted to get clarification on the correct procedure for starting and stopping a physical standby database. The Dataguard documentation states the following:
1. Start and mount the database:
SQL> STARTUP MOUNT;
2. Start log apply services:
To start Redo Apply, issue the following statement:
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
2> DISCONNECT FROM SESSION;
To start real-time apply, issue the following statement:
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
2> USING CURRENT LOGFILE;
My configuration is using real-time apply based on the information provided by the RECOVERY_MODE column of the V$ARCHIVED_DEST_STATUS view. Should I execute both ALTER statements or just the second one. If only the second one, how will the database re-synchronize, especially after a long down time. Also, must I do anything on the primary database prior to starting up the physical standby?
I'm using Oracle 10g SP1 on a linux server.

No. But you can recover until the last arch file generated on the primary, then you cancel the recovery and then use query#2 to start applying real-time. Refer to Note:343424.1 on Metalink.

Enabling the Active Dataguard and Real Time Apply

11.2.0.2 on AIX
I gather that , to enable Active Dataguard, you need to execute
STARTUP ; ----not startup mount
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;The above commands will enable both Active Dataguard (Real Time QUERY) and Real Time Apply. Right?
To enable just 'Real Time Apply' , I need to
startup mount
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;Am I right ?
Question on 'WITH SESSION SHUTDOWN' clause
While googling I've come across the following variant with an additonal 'WITH SESSION SHUTDOWN' clause
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE WITH SESSION SHUTDOWN;What difference does this clause bring ?
Is this claused used to enable Active Dataguard feature or 'Real Time Apply' or both ?

I gather that , to enable Active Dataguard, you need to execute
STARTUP ; ----not startup mount
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;
The above commands will enable both Active Dataguard (Real Time QUERY) and Real Time Apply. Right? Yes, It will be in both recovery / realtime + Read only mode, Also you can use
To enable just 'Real Time Apply' , I need to
startup mount
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;Am I right ?Yes. It will be in just recovery/real time mode.
Question on 'WITH SESSION SHUTDOWN' clause
While googling I've come across the following variant with an additonal 'WITH SESSION SHUTDOWN' clause
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE WITH SESSION SHUTDOWN;What difference does this clause bring ?
Is this claused used to enable Active Dataguard feature or 'Real Time Apply' or both ?It has multiple options based on startup type
For this example check link of Julian Dyke.
http://juliandyke.wordpress.com/2010/10/14/oracle-11gr2-active-data-guard/

Real - Time Apply some times uses Archived log file

Hi All,
I have a doubt on real time apply in Oracle 10g 10.2.0.4 version where arch process has been configured on primary database and standby has been configured for maximum performance mode with real time apply.
But in standby alert log file i use to find below message rarely
Media Recovery Log /oraclearch/oraarch/ctdr/5548.dbf
Media Recovery Log /oraclearch/oraarch/ctdr/5549.dbfSo my doubt is why archived files are applied as standby has been configured for real time apply where it should apply only from standby online redo log files.
Also i dont find any information on standby database in the view v$standby_log that these standby online log files have been archived in archived column, so how to find how much of data has been written by rfs process on SRL's...
-Yasser

hi,
As the remote file server (RFS) process writes the redo data to standby redo log files on the standby database, log apply services can recover redo from standby redo log files as they are being filled.
please check http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/log_apply.htm
thanks,
baskar.l

Active data Guard but with delay on applying redo logs

Hello,
A question: Active Data Guard gives the possibility of having a physical stand-by database open read-only, for instance for making 'up-to-date' reports.
Data Guard also has the possibility to apply logs with delay, for instance with a delay of some hours. Every commit on primary database is applied to standby after the delay period.
Can this delay be combined with Active Data Guard? This means that standby database is open read-only but with the delay... In case the delay is 2 hours, every report created on standby is ("up-to-date" minus 2 hours)...
Thanks for your answer,
Jan.

Hello All,
I answered my own question: indeed it is possible to activate 'real time apply' but with a delay in applying the logs. In EM-11 check the box "enable real time query" and apply. Nect go to thje tab "standby role properties" and change the value after "Apply delay" to for instance 30 minutes. Apply also.
Log on on the primary, create a table, insert some rows and do some logswitches. Log in on the standby and check for the new table. Notice that after 30 minutes the switched logs are applied, even when you change the delay period within the 30 minutes. The information about the delay seems to be in the log, since it is possible to change the delay immediately after the logswitches to 3 minutes, drop the table and do some logswitches again. The logs with the 'create table' statement in it are NOT applied after 3 minutes, but still after 30 minutes. The drop of the table however is done after 3 minutes on the standby. So the 'delay' information is in the log sent over to the Stand-by!

Goldengate from physical standby with Active data guard or from logical standby - which is better?

Hi,
We have Oracle 11.2.0.4 and are currently using Active Data Guard on a physical standby. My boss wants me to use Goldengate
to replicate several schema from Oracle to SqlSserver. She doesn't want to touch the Primary, which is in production. Would it be better
to setup a Logical standby for Goldendate to use, in addition to the Physical standby? Or will it be sufficient to use the Physical standby?
The application tables don't all have primary keys. I'm trying to decide if the Logical standby adds another layer of complexity or would
introduce delays in getting the data from Oracle to Sqlserver.
Thanks in advance,

Hi,
In this case I recommend you to use physical standby + Golden gate with ALO mode. You might have sligthly more trouble in logical standby. it means you might have more trouble at Goldengate's extract side.
You said
The application tables don't all have primary keys.
so you have to add keycols on replicat side.
I recommend you to add an index which should consist of keycols columns. it will be necessary for replicat performance.
Best Regards

B2MML with real time data

Hi All
I want some B2mml files with real time data.
So exact( maintenance infromation and Production) B2MML that is coming from MIS.
So if anyone have some information regarding this please tell me.
Thanks in Advance
Ramshanker

Hi, Ramshanker.
In the cases where the plant system is directly delivering B2MML documents (such as with certain products from Wonderware, Siemens, and some others), using the data in xMII is quite straightforward.
1) If the B2MML message is not "standard" B2MML (be aware that very few plant vendors use the baseline standard - most have a number of specific extensions), you can add the vendors' schemas or B2MML example documents to xMII by adding them to a ReferenceDocument folder on the server.
2) In xMII BLS, create a transaction (let's assume you called it B2MMLHandler) with one input parameter, of type "XML" (let's assume you called it "B2MMLDocument"). Add a "ReferenceSchema" or "ReferenceDocument" action, and configure it to load the vendor's B2MML format. Use the "assign reference document" menu option to assign this format to the transaction input.
3) You can now use the B2MML document to perform analytics or to map from the B2MML document into any RFC or BAPI calls or ESA service calls from within BLS.
4) The plant system system should "post" the XML data to an xMII transaction using the "Runner" URL as in:
http://<yourserver>/Lighthammer/Runner?Transaction=B2MMLHandler&InputParameter=B2MMLDocument
Of course, if the MES system isn't capable of posting the documents and they are available on the file system, you can use the xMII file actions (or remote file access via FTP) to access and load the B2MML documents, perhaps at a scheduled interval.
Hope this helps get you started in the right direction.
Best regards,
Rick Bullotta

Using Oracle EM 11g with Active Data Guard 11g

Has anyone installed Active Data Guard 11g with OEM 11g for an active-active state or know if there are any installation procedures with these two products? We will be installing these products this year. Thanks, Cathy

If you already have both servers configured in Grid Control as targets, it should be fairly easy to create a standby database on server B. OEM has Availability tab on your primary database Instance section should have "Data Guard" section which has "Setup and Manage" option. You follow through the wizard, and it will generate a standby database on server B. Then you can convert your standby db on server B to Active Read-only database by clicking few more buttons.
If you do not have these two servers configured on your Grid Control, that would be the first task.
We set up three standby databases using Grid Control 11g in our test boxes, and they worked very well. Our biggest problem was to actually installing the Grid Control, but once installed, everything was easy.

RMAN and 11g Active Data Guard

I just build my first 11g Active Data Guard . . . well the next thing to do is the RMAN part.
At this point I want to know:
A) How/What do you query to know that a log has been applied on the Standby side
B) How does RMAN know what has been applied
C) If I do the RMAN backup on the Standby side, won't there always be some difference because there is always some delay between the Primary and Standby?

I presume you mean using RMAN to delete archive logs? If the log hasnt been shipped and applied to the standby yet RMAN wont remove it, instead it outputs the following error:
RMAN-08137: WARNING: archive log not deleted as it is still needed
Until the log has been applied on the standby, this intelligence is built in at 11G (at 10G you needed an "_" parameter to get this working).
Thanks
Paul

Data guard real time apply vs archived log apply on physical standby

Dear DBA's,
last week i configuared DR , now the phyiscal stanby database is archive apply mode,
i want to confirm is it better to apply the archived log or should i cahnge it to real time apply .
give me sugesstions.
Thanks and Regards
Raja...

One question are you using ARCH transport to move the redo? or have you configured standby redo logs and logwr transport (either async or syncronous), if you are using the archiver to transport the logs then you can not use real time apply.
If you are using log writer to transpor the redo the realtime apply reduces the recovery time required if you need to failover as trher should be less redo to apply to bring the standby up to date, which mode you use to transport redo will depend on what is acceptable in terms of data loss and the impact on performance.

Oracle 11g Active Data Guard是怎么收费的?

原来在Oracle 10g中，DG是免费使用的，想请问一下，在Oracle 11g中，性能得到加强的ADG是怎么收费的？谢谢

FYI
Use customary EE Option License Practices
Active Data Guard license required if using either Real-time Query or RMAN block-change tracking on a standby
Example with primary and 5 separate standby databases
S1 = physical - real-time query
S2 = physical - real-time query + RMAN block change tracking
S3 = physical - RMAN block change tracking
S4 = physical - neither real-time query nor RMAN block change tracking
S5 = logical
Active Data Guard must be licensed for primary and for S1, S2 and S3.
Active Data Guard is not relevant to logical standby

What are the pros and cons using Active Data Guard vs Data Guard?

My understanding is that Active Data Guard is an additional database option for Oracle 11gR2 Enterprise Edition. I need to know the pros and cons using Active Data Guard vs Data Guard in order to decide whether to get pay extra for the Active Data Guard.
Thanks for any help.

Hemant K Chitale wrote:
Before jumping in to Active Data Guard, one needs to evaluate :
a. Is there really a need to run queries on the Standby ? The Standby could / should be at a remote site so queries are "across the network". Depending on the nature of the queries and the volume of output, the "performance" of the queries may not seem to be the same.
b. If the database is not in Maximum Protection mode, the data "seen" at the standby may not be in "real-time" synch
c. Not all applications are truely read-only when querying. Some applications use "jobs" that write to tables when querying. Such would not work with Active DataGuard. (example : EBusiness Suite). There are very complicated ways of handling this -- and one needs to consider if the complications can be introduced and supported.
Over the network accessing standby read only is really not an good idea, I think no one will compare performance with primary and standby,
But some of them they want to validate data which are very critical, as it is matching with primary or not, Its an added advantage with ACTIVE DATAGUARD
Prior to that until unless stop MRP, open database and then we need to validate, So there is an interruption of recovery, I can say its also an advantage where there is no interruption of recovery.

11gr2 Dataguard Active Standby - Unable to get Real-Time apply working

As above, I am unable to get real time apply to work WITHOUT it switching my standby back to MOUNT state. There does not seem to be anyting obvious from the broker, or alert logs.
On the Standby:
SQL> alter database recover managed standby database cancel;
Database altered.
SQL> alter database open read only;
Database altered.
SQL> select open_mode from v$database;
OPEN_MODE
READ ONLY
SQL> alter database recover managed standby database using current logfile disconnect;
Database altered.
SQL> select open_mode from v$database;
OPEN_MODE
MOUNTED
Primary:-
SQL> SELECT status, recovery_mode FROM v$archive_dest_status where dest_name = 'LOG_ARCHIVE_DEST_2';
STATUS RECOVERY_MODE
VALID MANAGED REAL TIME APPLY
Edited by: Imran on Apr 17, 2012 10:56 PM

Hello;
This is expected.
Works the same exact way on my system. How Redo Data is applied is set when the database is MOUNTED.
See - 6 Redo Apply Services
Data Guard Concepts and Administration 11g Release 2 (11.2) E10700-0
The document is vague on this at best, but think about the error you get if you try to start apply twice.
Data Guard Real-Time Apply FAQ [ID 828274.1]
Best Regards
mseberg
Edited by: mseberg on Apr 17, 2012 10:04 AM
h1. Test
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> alter database recover managed standby database cancel;
Database altered.
SQL> alter database open read only;
Database altered.
SQL> alter database recover managed standby database using current logfile disconnect;
Database altered.
SQL> select open_mode from v$database;
OPEN_MODE
READ ONLY WITH APPLY
SQL> So I get different results ??
Edited by: mseberg on Apr 17, 2012 10:40 AM
h2. Still more
I would like to change my answer. Based on my test and queries as shown below I believe REAL TIME apply is working. Note the last log says NO because its in progress.
Checking last sequence in v$archived_log
STANDBY               SEQUENCE# APPLIED    COMPLETIO
STANDBY                     343 YES        16-APR-12
STANDBY                     344 YES        16-APR-12
STANDBY                     345 YES        16-APR-12
STANDBY                     346 YES        16-APR-12
STANDBY                     347 YES        17-APR-12
STANDBY                     348 NO         17-APR-12
6 rows selected.
----------------Last log on Primary--------------------------------------|
MAX(SEQUENCE#)
           348
1 row selected.Yes, I doubled check and it works on mine. I guess I read what I wanted to read.
All my Standby redo are setup correctly ( size and numbers )
READ ONLY WITH APPLYYour answer my be the Uwe answer at the end of this thread :
Enabling the Active Dataguard and Real Time Apply
Best Regards
mseberg
Edited by: mseberg on Apr 17, 2012 10:50 AM

RMAN in active data guard with real time apply ON without a catalog DB

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