Configure OAS with dataguard for high availibility

Hi,
We use oracle application server to connect to 10g database. This prod db has a physical standby db. I am trying to do a failover test where I make the physical standby as primary and connect to that db from our application.
I change the dads.conf file to point to the physical db. but I get ORA-01033: ORACLE initialization or shutdown in progress Error-Code:1033 Error TimeStamp:Fri, 8 May 2009 21:57:55 GMT
but this physical db is up & open and in read write stage.
The db name is prod and prod_stby. is this because of the different names ??

Hello,
I think you need to keep the infrastructure database names the same. Have you considered using the failover capabilities within 10gAS for your application servers? This is different from
Data Guard standby database option. Here is a good Metalink note on how to setup and configure 10g Application Server failover:
Understanding OracleAS 10g High Availability - A Roadmap- Metalink Note #412159.1
Cheers,
Ben

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Please remember to click "Mark as Answer" or "Vote as Helpful" on the post that answers your question (or click "Unmark as Answer" if a marked post does not actually
answer your question). This can be beneficial to other community members reading the thread.
This forum post is my own opinion and does not necessarily reflect the opinion or view of my employer, Microsoft, its employees, or other MVPs.
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The Definitive Guide to Delivering Microsoft Office with App-V

ASM with regard to High Availability

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Hi Sebastian,
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Hi，
Thank you for your post here.
I do not think it is a good idea.
Please refer to the article below:
http://www.experts-exchange.com/Microsoft/Windows_Security/Q_28014001.html
Best Regards
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Best practice for High availability design, HSRP

Hi,
I am planning to create High Availability for LAN to WAN connectivity.
But I want to know your opinion about the best way how to do this. I googled for a solution/best way how to do this, but I didn't found in my opinion right answer.
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Hi Audrius,
I would suggest you to go with HSRP. GLBP you will use where you want load balance.
I think the connectivity between your Routers (3945) and switches (3560) is gigabit connection which is high speed. So keep one physical link from your switches to each router and do HSRP on those router physical interfaces.
In this way you will have high availability like if R1 fails then R2 will take over.
Regarding the config see the below which I have for one of my Customer DC.
ACTIVE:
track 1 interface GigabitEthernet0/0 line-protocol
track 2 interface GigabitEthernet0/0 line-protocol
interface GigabitEthernet0/1
ip address 10.10.10.12 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex full
speed 100
standby use-bia scope interface
standby 0 ip 10.10.10.10
standby 0 priority 110
standby 0 preempt
standby 0 authentication peter2mo
standby 0 track 1 decrement 30
standby 0 track 2 decrement 30
STANDBY:
track 1 interface GigabitEthernet0/0 line-protocol
interface GigabitEthernet0/1
ip address 10.10.10.11 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex full
speed 100
standby use-bia scope interface
standby 0 ip 10.10.10.10
standby 0 priority 90
standby 0 authentication peter2mo
standby 0 track 1 decrement 30
Please rate the helpfull posts.
Regards,
Naidu.

Need to add a second weblogic server for high availability

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Configure PO document type for "High sea Sale"

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User experience question for High Availability

Hi Experters,
Not sure whether this is right forum to post this message.
If anybody has already captured user experience for the failover environment, will appreciate their help on this. I will give overview of environment. Using PowerHA for ASCS/SCS failover, ORACLE Data Guard for Database failover.
Trying to capture user experience for the failover environment
if ASCS/SCS fail,
App Server Fail (using F5 Load Balancer which should reroute, unless all app server fail),
Database fail
with following cases:
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2. User logged in and run a transaction before failover.
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     What will happen in case of DB failover
   and what will happen in case of App server fail (NO High Availability, only redundant app servers.      MAX 4 app servers for each component)
3. User logged in and run a transaction during failover.
   What will happen in case of ASCS / SCS
     What will happen in case of DB failover
   and what will happen in case of App server fail (NO High Availability, only redundant app servers.      MAX 4 app servers for each component)
Not sure which one possible or not. Some case thinking system will hang need to refresh. Some case hour glass and then come back once failover complete. and some case session closed completely.
Thanks for your time and god bless the knowledge you have.
Saroj

just try to answer as much as I can (guess)
> 1. User logged in, NO ACTIVITY. I believe NO IMPACT either ASCS/SCS fail or DB fail or App Server fail.
DB failed and SCS failed won't have any impact to enduser, but if app server failed, the user session will lost, user will see a pop up error message at their SAPGUI.
> 2. User logged in and run a transaction before failover.
>      What will happen in case of ASCS / SCS
user wont'be effected during failover if user is doing nothing but idle (replica enqueue is working before failover)
>      What will happen in case of DB failover
App server won't be able to do much thing but it's work processes into reonnecting status. it should resume (reconnect to DB) when failover is compoleted. So user should be able to continue the sessions.
>    and what will happen in case of App server fail (NO High Availability, only redundant app servers.      MAX 4 app servers for each component)
user sessions in failed app server will be lost. However user should be able to logon agan if
1) logon via group, and
2) within the group, there is at least one appl server alive.
> 3. User logged in and run a transaction during failover.
hanging or
>    What will happen in case of ASCS / SCS
if the transaction is using enqueue service, for example, then user will get error message. otherwise, user won't be effected, e.g. if use is just search a list of order. user wont to able to logon via group during the failover.
You also should be pepared for user connected through message server, .e.g. http request dispatching through message server directly , or via web dispatchr. user wont be able to connect during the failover.
>      What will happen in case of DB failover
user will get error message, transaction will be aborted.
>    and what will happen in case of App server fail (NO High Availability, only redundant app servers.      MAX 4 app servers for each component)
very similar case as case 2.

BIA Load Check delivers wrong result for high availability

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Edited by: HMaeder on Jan 20, 2010 5:44 PM

Hello Hendrik
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Upgrade MS SQL 2005 to MS SQL 2008 (R2) for High-Availability SAP ERP System

Hi,
We are having ECC 6.0 SR3 Hight-Availability system on windows cluster environment.
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Thanks
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Hi Venkat
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SS

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Hello
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I have others informations to give you
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Unified APPL_TOP in R12 for High Availability application tier?

Hi Gurus,
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Consider: i have node1 and node2
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Thanks.

user5499188 wrote:
Hi,
Sorry to update after long time. A just came to me.
384248.1 says that we need to use Linux OCFS for shared appl_top.The note does not say that you must use OCFS. :-) It says that OCFS2 is certified and supported for R12 application tier file systems. That does not mean that OCFS is your only option.
1> Is it compulsory to have OCFS to use shared appl_top? if yes what OCFS we should use?
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Regards,
John P.
http://only4left.jpiwowar.com

License High for High-Availability System

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Hi
try to install the license through SLICENSE and click on. Click on new license and upload the license from the location (Download or copy the .txt file on system).
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Configure OAS with dataguard for high availibility

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