ORA-16820: fast-start failover observer is no longer observing this databa

Wem have primary and physical standby of Oracle 11.2 on linux 2.6.18-92.el5. For a reason of hardware resources, we want to run the Observer on the standby machine. Here I have several questions:
1) Is it supported to run Observer on the standby?
2) Does fast-start failover means automatical detecting down of primary and switch over the role automatically? WE do not want automatical switch over.
3) Started Observer on the standby and run show configuration, get errorDGMGRL> show configuration;
Configuration - antony
Protection Mode: MaxAvailability
Databases:
    rdev2 - Primary database
    sdev2 - (*) Physical standby database
      Error: ORA-16820: fast-start failover observer is no longer observing this database
Fast-Start Failover: ENABLED
Configuration Status:
ERROR Is the error caused by sunning Observer on standby, or other things?
Thanks.

Answering all your questions
Does fast-start failover means automatical detecting down of primary and switch over the role automatically? WE do not want automatical switch over.
Fast-Start Failover is an Oracle Data Guard 10g Release 2 feature that automatically, quickly, and reliably fails over to a designated, synchronized standby database in the event of loss of the production database, without requiring manual intervention to execute the failover.
In addition, following a fast-start failover, the original production database is automatically reconfigured as a new standby database upon reconnection to the configuration. This enables Data Guard to restore disaster protection in the configuration quickly and easily, returning the database to a protected state as soon as possible.
Is it supported to run Observer on the standby?
There are three essential participants in a Fast-Start Failover configuration:
• The production database
• A target standby database
• The Fast-Start Failover Observer
The target standby database will become the new production database following a fast-start failover (note: There can be multiple standby databases in a Data Guard configuration, but only one can be designated as the fast-start failover target. A manual failover would be required in order to execute a failover to any of the additional standby databases within the configuration).
The Observer is a separate process incorporated into the DGMGRL client that continuously monitors the production database and the target standby database for possible failure conditions.
The rule is that out of these three participants, (production database, standby database & observer) whichever two can communicate with each other will determine the outcome of fast-start failover
Hope the above explaination answers your question.

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Warning: ORA-16829: fast-start failover configuration is lagging

Hi
I got waring for fast_start failover configuration
DGMGRL> show configuration
Configuration - activefailover_migdb
Protection Mode: MaxPerformance
Databases:
migdb - Primary database
Warning: ORA-16829: fast-start failover configuration is lagging
migdbdr - (*) Physical standby database
Warning: ORA-16829: fast-start failover configuration is lagging
Fast-Start Failover: ENABLED
Configuration Status:
WARNING
anybody please suggest solution for the same

Dear shd,
Please check the following link;
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28419/d_dg.htm
*ORA-16829: lagging Fast-Start Failover configuration*
+DBMS_DG.INITIATE_FS_FAILOVER was invoked in a maximum performance fast-start failover configuration when the configuration was not in the user-specified redo lag limit.+
Oracle Error :: ORA-16829
fast-start failover configuration is lagging
Cause
The fast-start failover target standby database was not within the lag limit specified by the FastStartFailoverLagLimit configuration property. As a result, a fast-start failover could not happen in the event of a primary database failure.
Action
Ensure that the fast-start failover target standby database is running and applying redo data and that the primary database is successfully trasmitting redo data. If this condition persists consider raising the value of the FastStartFailoverLagLimit configuration property.
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Data Guard Broker: errors ORA-16816 and ORA-16817 with Fast Start Failover

Hi,
my environment is:
OS: Windows XP Professional Edition SP2
DB: Oracle EE 10.2.0.3
Primary db: orcl
Standby db: stby
both databases are running on the same server.
I have configured Data Guard as described in the DG Administration Guide.
In the Data Guard Broker I switch to 'stby' succesfully and 'stby' is the primary db and 'orcl' is the standby db.
I switched back to 'orcl' as primary db and I get some errors:
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STATUS REPORT
INSTANCE_NAME SEVERITY ERROR_TEXT
* WARNING ORA-16817: configuration for Fast Start of Failover is not synchronized.
DGMGRL> show database 'stby' statusreport;
STATUS REPORT
INSTANCE_NAME SEVERITY ERROR_TEXT
* ERROR ORA-16816: wrong databaserole
* WARNING ORA-16817: configuration for Fast Start of Failover is not synchronized.
DGMGRL> show configuration;
Configuration
Name: DG1
Enabled: YES
Protection Mode: MaxAvailability
Fast-Start Failover: ENABLED
Databases:
orcl - Physical standby database
- Fast-Start Failover target
stby - Primary database
Current status for DG1:
Warning: ORA-16607: one or more databases failed.
I have searched for solutions on Metalink and google, but with no success.
Has anyone got this kind of problem?
Any suggestions on how to resolve it?
Thanks

Hi DigerDBA
I did your advice , the error disappear, and thanks for your advice , but do I need to keep standby_file_management='AUTO' or 'MANUAL' in primary and standby init files?
Am asking this because when I use the observer the failover failed and I get the following error
SQL Execution error=604, sql=[ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN]. See error stack below.
ORA-00604: error occurred at recursive SQL level 1
ORA-01275: Operation ADD LOGFILE is not allowed if standby file management is automatic.
Complete Failover operation failed in the step when attempting to convert the database to be the new primary.
Database Resource SetState Error (16771)
01/07/2014 09:14:43
Command FAILOVER TO epprod2 completed with error ORA-16771
if possible can you advice me please?

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Hello Experts,
I have a 3 node RCA with a 3node standby. Manual complete failover and switchover work correctly. I would like to enablr fast-start failover when nobody is around.
I know that according to the documentation, I would need a 3rd server to act like the observer. But I 've run out of servers.
Could someone provide clues or ideas how I could set this up. Do I indeed need an observer, or is it really just for additional fault tolerance?
Sincerely
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There's no shortage of short notes on this :
http://jakub.wartak.pl/blog/?p=80
http://oracleinstance.blogspot.com/2010/01/configuration-of-10g-data-guard-broker.html
http://gjilevski.wordpress.com/2010/03/06/configuring-10g-data-guard-broker-and-observer-for-failover-and-switchover/
http://www.oracle.com/technetwork/articles/smiley-fsfo-084973.html
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However when I checked my broker config it gave for STANDBYL
ORA-16795: the standby database needs to be recreated
Strange I though, since I would have expected STANDBYL to survive ok given that the new primary, STANDBYP was a physical standby of PRIMARYP.
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connected to target database: STANDBYL (DBID=440422466, not open)
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using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=11 device type=DISK
starting media recovery
archived log for thread 1 with sequence 24 is already on disk as file /home/app/oracle/fast_recovery_area/STANDBYL/archivelog/2013_12_04/o1_mf_1_24_99yqwog0_.arc
archived log for thread 1 with sequence 25 is already on disk as file /home/app/oracle/fast_recovery_area/STANDBYL/archivelog/2013_12_05/o1_mf_1_25_9b0mlyvr_.arc
media recovery complete, elapsed time: 00:00:04
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oraclel[STANDBYL]>dgmgrl
DGMGRL for Linux: Version 11.2.0.3.0 - Production
Copyright (c) 2000, 2009, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys/manager
Connected.
DGMGRL> shutdown;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
DGMGRL>
DGMGRL>
DGMGRL> startup;
ORACLE instance started.
Database mounted.
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
ORA-01589 - that a nasty surprise ! I didn't think I would need to do anything with the log sequences after a flashback
Any ideas of what is going on ?
thanks,
Jim

Hello;
This pdf might meet your needs :
http://blogs.oracle.com/AlejandroVargas/resource/DATAGUARD-FSFO-IMPLEMENTATION.pdf
Additional info :
http://oracle-tech.blogspot.com/2008/08/fast-start-failover-it-is-reliable.html
http://jakub.wartak.pl/blog/?p=80
http://www.databasejournal.com/features/oracle/article.php/3849106/Fast-Start-Failover-in-Oracle-11g-Data-Guard.htm
Best Regards
mseberg

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I've always said, size doesn't matter to Data Guard except when you are creating a standby database. After that it is the amount of Redo that is generated by the Primary database. A failover is a failover, for a 10GB database or for a 60TB database. The scary part is having to get the old Primary back up as a standby as quickly as possible.
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Hi,
Can FSF be used in Maximum Protection mode as this will always mean FSF will be able to occur? Yes, Maximum Protection Mode can be used with Fast-Start Failover, please review the next link.
http://download.oracle.com/docs/cd/B19306_01/server.102/b14230/cli.htm#BABEIIHD
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Hello Everyone,
I'm trying to troubleshoot this weird error in our DG setup. I have FSFO enabled and observer running. However, when i check the status of standby database with show database 'stdby', i get ORA-16820, however, i do the same for primary database, status is success.
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ORA-16820: fast-start failover observer is no longer observing this databa

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