What are things we need to take care from Oracle Applications and Database side for the DNS Level failover.

regards
yadava

thanks for the information

regards
yadava

you can make your DNS point to 2 IP addresses at the same time, the browser will connect to what ever server thats listening on web port. have apache running only the server thats is active. Make sure to test it before implementing

review the below link for better understanding of DNS
http://www.tenereillo.com/GSLBPageOfShame.htm

Vasu

Appreciate your effort in clarifying the below thing.
I want to have a failover DNS, where, 1 entry can point to 2 different ip address. But at one time, only point to 1 primary server.
And if the primary server down or not available, the other server will take over and the dns can automatically change the dns entry to point to the failover server.

1. I want to know whether simplefailover can do or not?
2. is it free software?
3. how about maintenance. is it easy to maintain?

thanks yadava

I appreciate your patience in presenting the article. Do you have any best practise documents available for implementing the DNS for 11i failover.

thanks
yadava

I appreciate your effort in posting the DNS Setup for Effective 11i DR Failover. I am implementing a DNS level failover for our 11i applications, on the same server it contains the other 3rd party application like appxwors for scheduling the jobs, and it does uses any Load balancers as of now.My concern is if we use DNS failover then end users can access the secondary server with the same URL or they need to change the URL.

You are right. We cannot make 11i failover 100% transparent. There is some downtime involved there. My point was more in the context of URLs that user uses to login to 11i after failover. I have seen clients, who use completely different URL for the DR failover instance. This makes it difficult for the end User, who often bookmarks the 11i URL in his/her browser

thanks
Vasu

>> One of the main goals in architecting a Disaster Recovery (DR) solution is to make a DR failover transparent to the end users.

I doubt if 11i Instance fail over can be made transparent to the users. Is there such a technology…? You will have at least to bounce the middle tier services.

Thanks,
Madhu