Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.
COURSE of the MONTH
11 days, 11 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
SQL NATIVE
Posted on 2011-09-09
in the application layer we are giving the failover db instance name.
I like to understand if we failover db to the other instance rather which was mention in the application code will SQL NATIVE CLIENT will redirect the client to failed over db which was not mentioned in the application code?
2.In the application layer if i dont mention the failover db name, and due some bad failure in the server ,server went down. And there is mirroring setup and it has been manual failover.
Now how will application will connect to failured over server?since sql native is down on old priniciple server?
I like to understand if we failover db to the other instance rather which was mention in the application code will SQL NATIVE CLIENT will redirect the client to failed over db which was not mentioned in the application code?
2.In the application layer if i dont mention the failover db name, and due some bad failure in the server ,server went down. And there is mirroring setup and it has been manual failover.
Now how will application will connect to failured over server?since sql native is down on old priniciple server?
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
2-
2
5 Comments
If you have cluster with 2 nodes (servers) your db-instance can work on both. Your cluster has a name that has to be mentioned for the connections, not the name of the active node. Failover means that the instance with sitll the same name changed from the one node to the other node but beacuse the cluster and instance name don't change there is no 'connection problem'.
DB-mirroring <> failover cluster.
DB-mirroring <> failover cluster.
no i am using cluster technology here. I just having 2 servers where principle is on one server and mirrior is on another server.In this case for question above which i have posted, how it will work?
Active 3 days ago
You will have to simulate cluster unless you change all the clients to point to the new server. By simulate, I mean, you will have to create a specific entry in DNS like appdb.yourdomain that points that is usually bound to the production DB server. When it dies, you have to bind that IP address to the mirror server for the clients to pick it up.
So if I am not mentioning in appdomain fileor in application layer then application or users will not be able to redirect to appropriate sql box Am i right?
so how does SQL native client is useful?
so how does SQL native client is useful?
Active 3 days ago
Correct, if you are not using a name that resolves to the new server once you have a failure on the production one, then the clients won't be able to automatically switch. I am not sure I understand the second question. The issue is that the Native Client connects to a DNS name or IP address for example and said entity has failed. Without a change either on client to a new entity OR binding of the old information to a new system, the Native Client can't connect. Sounds like you want a cluster whether physical or virtually managed by an appliance that directs a virtual IP address to the appropriate physical IP node based on status.
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
This article shows gives you an overview on SQL Server 2016 row level security. You will also get to know the usages of row-level-security and how it works
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.
Suggested Courses
Course of the Month11 days, 11 hours left to enroll
752 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.