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I accidentally installed Evaluation Sql Server 2008 R2 instead of Sql server 2008 R2.
Now i am getting an error like Evaluation has expired. can anyone tell me how to retrieve my database's.

Based on your question I assume you have a valid sql license.

The following article describes how to use your key to enable an evaluation version of sql.[^]
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1. Using the 'Services' applet, stop SQL Server.
2. Save your MDF and LDF files (the ones for your databases, not MS).
3. Uninstall the evaluation version
4. Install SQL server
5. Attach the MDF/LDF files (from Management Studio, object browser, right-click the 'Databases' folder, pick 'All Tasks', then 'Attach Database').

Hope this helps,
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lisalis 11-Jun-12 16:07pm    
I am getting an version error. i am not able to attache the databases.
Pablo Aliskevicius 12-Jun-12 3:04am    
Possibly your evaluation version was more advanced that your production version: e.g., your evaluation version was SP1 or R2, and your production version is plain old sql2008.

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