Issue: SharePoint is down after applying KB 2345304
Env: Mostly seen in WSS 3.0 FARM
Error: Cannot connect to Config db or PSConfig fails with Access Denied errors or while file uploads in the Document library we get Access Denied errors.
1. Go to SQL management studio expand the Databases
2. Go to the properties of SharePoint Configdb -> Options -> Auto Close parameter set to "False".
When this security update is applied, the SQL databases are closed and for that we need to change the "Auto Close" option to "False" from "True"
Do the same for all the SharePoint Databases in use and then run the PSConfig wizard.