Dataguard Switch Over

RAC:11.2.0.2
OS:Linux
DB:11.2.0.1
I have 2 node RAC datebase on Primary as well and Standby side also configured the datagaurd Brooker.
sqlplus sys/xxxxxx@EIOIDP1_DAL_DGB as sysdba # Able to login when database is up
sqlplus sys/xxxxxx@EIOIDP1_DAL_DGB as sysdba #Unable to login when database is down

user13549752 wrote:
Actually when i am doing a switchover using dgmgrl commands it is unable to bringup the new standby instance.
DGMGRL> show configuration
Configuration - eioidp1_dg
Protection Mode: MaxPerformance
Databases:
eioidp1_dal - Primary database
eioidp1_rtp - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
DGMGRL> switchover to eioidp1_rtp
Performing switchover NOW, please wait...
New primary database "eioidp1_rtp" is opening...
Operation requires shutdown of instance "eioidp11" on database "eioidp1_dal"
Shutting down instance "eioidp11"...
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "eioidp11" on database "eioidp1_dal"
Starting instance "eioidp11"...
Unable to connect to database
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Failed.
Warning: You are no longer connected to ORACLE.
Please complete the following steps to finish switchover:
start up instance "eioidp11" of database "eioidp1_dal"
I have to manually startup the instance.Hello,
Here is your answer :)
*Automatic Restart of Databases during Switchover fail with ORA-12514 in DGMGRL [ID 308943.1]*
Post your listener.ora here or Make changes according to Note.

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Dataguard switch over connection

Hi all,
suppose we configured dataguard in high protection mode. Now all the users are connecting to primary database.
Primary netservice name is prim and standby netservice name is stand,
Now if we switch over this primary database to standby and standby to primary to which database users are going to connect. how they connect to current primary database (previously it was standby).
How application will connect to the primary database (previously it was standby). all the applications will be using prim netservice name right...? what would be stuff from dba's end.
Please let me know.
Thank you!

Hi;
There is seeded dg forum site. For your future issue i suggest close your thread here as changing thread status to answered and move it to Oracle Discussion Forums » High Availability » Data Guard which you can get more quick response
Regard
Helios

Post switch over in oracle dataguard 11g

Dear Guru,
Switch over has been completed successfully from primary database to standby database.
new primaray database is open and accessible but its showing his satus in v$database as below.
database_role = primary
switchover_status = not allowed
db_unique_name = dg1_stdby
old primaray database which is now standby showing his satus in v$database as below.
database_role = physical standby
switchover_status = session active
db_unique_name = dg1_primy
when check status in data guard broker its
for both the databases - dg1_primy and dg1_stdby its showing error ORA-16810: multiple errors or warnings detected for the database.
when checked dataguard log file on new primary server its showing
ORA-16816: incorrect database role
ORA-16700: the standby database has diverged from the primary database
Please guide me how to resolved issue.
Thanks & Regards,
Nikunj Thaker

Hi Nikunj,
You can find the scenario, in the "Problem : Data Guard Broker Switchover fails With ORA-16665 using Active Data Guard", on metalink.oracle.com
First of all manually complete the Switchover, ie. restart the Databases in its new Role. Note that the final Role Change has not been recognized by the Broker, so you have to rebuild the Data Guard Broker Configuration when the Databases have been restarted:
DGMGRL> remove configuration;
DGMGRL> create configuration ...
DGMGRL> add database ...
DGMGRL> enable configuration;
Best regards,
Orkun Gedik

Switch over for oracle application

Hi Guru
By using dataguard we can achieve switch for database but i need how to configure switch over on oracle apps 11i
Thanks
user7300437

Hi,
Please see section 5 in
Business Continuity for Oracle Applications Release 11i, Database Releases 9i and 10g [ID 216212.1]
Section 6.1 in
Business Continuity for Oracle E-Business Release 11i Using Oracle 11g Physical Standby Database - Single Instance and Oracle RAC [ID 1068913.1]

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On the sender side a switch over implementation like WebDispatcher, Load Balancer, etc.
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Could be this as suitable solution for SAP PI Business Continuity or do you know better solutions?
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Jochen

Hello Bernhard, Hello Holger,
many thanks for reply and providing these valuable information's.
The nZDM Concept is already known to me but it doesn’t answer all our questions.
Please let me explain a little more in detail.
Not currently but in the near future we assume some new interface over our SAP PI System will come with the requirement max. downtime lower thank 10 to 15 min. only allowed.
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PI Federation – An Overview
among others Page: 27
Business Continuity: Central PI integration Server with redundant Integration Server to be used in controlled switch over scenarios when upgrading or patching.
or
How to Fast-Switch Integration Scenarios between SAP PI Runtimes Part II: Web Dispatcher
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The solution should fit as well to our existing hardware infrastructure.
For production we use an IBM (AIX) failover-cluster switch between our both data center.
Regarding our hardware infrastructure prerequisites and downtime requirements, which solution(s) do you recommend? Is PI Federation still an option?
Many thanks in advance!
Regards,
Jochen

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Dataguard Switch Over

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