Migrating SQL Server Database Logins with sp_help_revlogin
The third most popular blog post for 2012! Enjoy!
You’ve migrated your database to a new box, with no problems. You created the login that goes with this database, and all is right in the world. However, when your user goes to connect to it they get the dreaded error 18456, login failed. But wait, I created the login, right?
Not so fast there, accidental DBA. You are going to need the help of a nifty stored procedure called sp_help_revlogin. This stored procedure, provided by Microsoft in the link below, will generate a T-SQL script that will copy the logins, their passwords and their corresponding SIDs (or security identification number, which is usually the culprit here). This is also a great utility when the database has numerous users with various security levels and passwords. Really now, who wants to write all of that down and recreate it? Even with screenshots, it can turn into a large, fat-fingering and time consuming event. …
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