SQL Server 2012 In-Place3 Upgrade and Timing of Database Version Change -

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we updating several sql server 2008r2 instances sql server 2012 sp3 cu2. know database versions changed 100 110 during process (e.g. once finished, databases can no longer moved 2008r2 instance).

does change databases occur during upgrade or first time databases brought online when server restarts?

sql server keeps track of version in 2 ways. first, sql server instance has version (for example sql server 2008 r2 10, followed decimals keep track of patches).

your databases separate version, known compatibility level. if upgrade instance, databases not upgraded until choose so. not mean there not impact, mean databases can remain in old version. example of 100 , 110 both compatibility level.

please see changing compatibility on msdn here: https://msdn.microsoft.com/en-us/library/bb510680.aspx


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