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Changing The Logical File Names Of A SQL Database
December 28th, 2015 by Ian Grieve
When a database is created, it has a logical name assigned to it which will match the physical name. However, when working with Microsoft Dynamics GP, we often create both a live and test database and then populate the settings in the live database and replicate over the top of the test one.
Or on occasion we have created a template database which then gets copied when a new company is created (this method is often used for clients who have a substantial amount of setup in third party modules which the PSTL Company Copy doesn’t cater for.
The problem with both of these is that when a database is restored elsewhere it brings it’s logical name with it; meaning a mismatch between the logical and physical names which causes problems when backing up and restoring databases.
However, all is not lost; it is possible to change the logical name of a database using a simple SQL script. The script, below, has two ALTER DATABASE commands, one for the data file and the other for the log file.
I am changing the logical name from GPST15R2 to GPSP15R2 on both files (see highlighted text):
/* Created by Ian Grieve of azurecurve|Ramblings of a Dynamics GP Consultant (http://www.azurecurve.co.uk) This code is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0 Int). */ ALTER DATABASE P15R2 MODIFY FILE ( NAME = [GPST15R2Dat.mdf] ,NEWNAME = [GPSP15R2Dat.mdf] ) GO ALTER DATABASE P15R2 MODIFY FILE ( NAME = [GPST15R2Log.ldf] ,NEWNAME = [GPSP15R2Log.ldf] ) GO
As always when running a SQL script against a database, make sure you have a good backup and perform a test afterward to make sure there are no problems.