How to upgrade the version of a SQL Server 2008R2 instance?

Hi all,

I have a SQL server 2008R2 installation with 2 instances.

One of them is up to date but the other is not.

So, when i try to restore a *.BAK backup on a database, i obtain this message :

The database was backed up on a server running version 10.50.1600. That version is incompatible with this server, which is running version 10.00.5500

So, how can I do?
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AdmicomAsked:
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Nakul VachhrajaniConnect With a Mentor Technical Architect, Capgemini IndiaCommented:
One of your two instances (the one with version 10.00.5500) is NOT SQL Server 2008 R2.
The R2 release comes with a version # 10.50, whereas the 2008 came with a version # in the series of 10.00.

Sadly, they are two separate versions and there is no CU or SP that can upgrade you from one to another. You can perform an upgrade using the SQL Server installer, but if you are not familiar with in-place upgrades, my recommendation would be to not do so.

As a general rule, you can always restore backups taken on a lower version of SQL to a higher version, i.e. a backup of a database on SQL Server 2008 can always be restored on SQL Server 2008, 2008 R2 or higher. But the vice-versa is not true.

Keep your backups and restores in a single direction (from 2008 to 2008 R2) and you should be all set.
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