This morning I have been setting up my Azure Servers in preparation for my presentation to the Cardiff SQL User Group this month.
I used my scripts from My Post on Spinning Up Azure SQL Boxes to create two servers and then I wanted to create some databases
I decided it was time to write a Create-Database function using a number of scripts that I have used to create individual databases.
Whilst finalising the function I didn’t quite get it right sometimes and was faced with an error.
Not the most useful of errors to troubleshoot. The issue could be anywhere in the script
You can view the last errors PowerShell has shown using $Errors. This gives you the last 500 errors but you can see the last error by using $Error if you pipe it to Format-List you can get a more detailed error message so I added a try catch to the function which gave me an error message I could resolve.
Much better. The problem was
Cannot create file ‘C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\.LDF’ because it already exists.
Mistyping a variable has caused this. Creating an empty file name variable which then threw the error the second(and third,fourth fifth) times I ran the script but this error pointed me to it.
There are a vast number of variables you can set when creating a database. I decided to set File Sizes, File Growth Sizes, Max File Sizes and Recovery Model. I only set Server and Database Name as mandatory parameters and gave the other parameters default values
We take the parameters for file sizes in MB and set them to KB
Then set the default file locations. Create a database object, a Primary file group object and add the file group object to the database object
Add a User File Group for User objects
Create a database file on the primary file group using the variables set earlier
Do the same for the user file and then create a Log File
Set the Recovery Model and create the database and then set the user file group as the default
Finally catch the errors
It can then be called as follows Create-Database SERVERNAME DATABASENAME
or by setting all the parameters Create-Database -Server Fade2black -DBName DatabaseTest -SysFileSize 10 -UserFileSize 15 -LogFileSize 20 -UserFileGrowth 7 -UserFileMaxSize 150 -LogFileGrowth 8 -LogFileMaxSize 250 -DBRecModel FULL
This means that I can easily and quickly set up several databases of different types and sizes
The script can be found here Create-Database