Using spmetal and linq

http://blog.technock.net/2012/11/how-to-use-linq-spmetal-in-sharepoint.html

SPMetal.exe gets error: The Web application cound not be found.

http://rabbitmaomao.wordpress.com/2010/10/08/spmetal-exe-gets-error-the-web-application-cound-not-be-found/

I started receiving the error: "Error occurred in deployment step 'Recycle IIS Application Pool': Not found" after trying to deploy solution in VS2010,

solution: Provide permissions to SharePoint_config and WSS_Content databases