Download Migrate SharePoint`s SQL Server to another SQL

Migrate SharePoint’s SQL Server to another SQL Server
The following migration method for move database server to new SQL Server
Method 1:shutdown the farm and Detach / Attach SQL server database to new server
with same name
Method 2: step by step procedure for moving database.
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Nintex databases(need to check the documentation with Nintex)
Stop all SharePoint and IIS Related Services
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Configuration database
Central Administration content database
Content databases
Service application databases
SharePoint 2010 Administration
SharePoint 2010 Timer
SharePoint 2010 Tracing
SharePoint 2010 User Code Host
SharePoint 2010 VSS Writer
SharePoint Foundation Search V4
World Wide Web Publishing Service
SharePoint Server Search 14
Web Analytics Data Processing Service
Web Analytics Web Service
Stop IIS
iisreset /stop
Detach all related SQL Server databases
 Configuration database
 Central Administration content database
 Content databases
 Service application databases
 Nintex databases
Move all database files (.mdf, .ldf, and .ndf) to the new server.
Place it in the data folder of the SQL Server instance of the new host.
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In SQL Server, ensure that all of the SQL Server logins, fixed server roles, fixed
database roles, and permissions for the databases from the source server have
also been configured correctly on the destination server.
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To set up permissions on the new server
On the destination database server, open SQL Server Management Studio and
transfer All logins and permissions from the original instance to the destination
instance
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Attach your databases to the new SQL Server
Verify what ports your New SQL is using
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Go to your SharePoint server and create\Edit your SQL Server Alias
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If you don’t have SQL Configuration Manager in your SharePoint Server then
run the CLICONFIG again on both 32 and 64 bit instances. For 32 bit go to run
command and execute this “%SystemRoot%/SysWow64/CliConfg.exe”
and for 64 just this “CLICONFG
Use SQL Server connection aliases to point to the new database server, and
then use the connection alias to update all Web servers. A connection alias is a
defined alternate name that can be used to connect to an instance of SQL
Server. You have to configure the alias on all Web servers and application
servers in the farm.
Test the SQL Server client alias
Start all your SharePoint services, now you have successfully migrated your
database.
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SharePoint 2010 Administration
SharePoint 2010 Timer
SharePoint 2010 Tracing
SharePoint 2010 User Code Host
SharePoint 2010 VSS Writer
SharePoint Foundation Search V4
World Wide Web Publishing Service
SharePoint Server Search 14
Web Analytics Data Processing Service
Web Analytics Web Service
10. Stop IIS
iisreset /stop
Check all site and workflow, Services…