Resize data file manually to prevent downtime

This script will resize the data file of a passed in database name and filename by 10%. It can run in 3 modes.Resize, INFO, HELP. RESIZE is passed into parameter @Mode when we know the database name and file we wish to resize. INFO is passed in when we only know the database name and we wish to find out the data file names. HELP is passed in when we have no idea what to do. I run this in my job agent every night to prevent SQL from doing it automatically every time the data file fills up. The reason for this is that this automatic resize can happen at any time (including peak hours) and it could slow down performance.
Instructions and parameter definitions are in the stored proc comments.
Keep in mind this uses custom errors for error trapping. You should create these errors before doing this:.Just run the following SQL. EXEC sp_addmessage 55001, 16, 'Validate - Source: [''%s''] Operation: [''%s''] Description: [''%s'']' , NULL, true, REPLACE