We had a legacy SharePoint 2007 which was using an old version of SQL Database. The Content Database was then migrated to a different SQL Server that was running on a newer version. This has caused the SharePoint 2007 instance to become inaccessible. The registry key that references which Database should be used has been updated however in the Logs for the SharePoint Instance we are still getting this issue;
Cannot connect to SQL Server. <ServerName> not found. Additional error information from SQL Server is included below. [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
Is there anywhere else that we need to update the reference to the database other than the Registry?