Is their any document avaiable on Active-Active SQL cluster
on microsoft site. If yes can some one please send the link

Click Start | Help. Type in "server cluster". That gives you more than
enough information on accomplishing the Windows clustering portion of this.
After that, open up Books Online and type in "failover clustering". That
will give you the rest of the information.

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Mike
Principal Mentor
Solid Quality Learning
"More than just Training"
SQL Server MVP
http://www.solidqualitylearning.com
http://www.mssqlserver.com