Disk space and database size email alerts

Create a stored procedure that will send out disk space and database alerts via email that you can attach to a job

About

A previous client was struggling with disk space on one of their SQL Servers. We wanted to get early visibility of where potential errors could arise, and looked online for some samples which led us to these two articles;

MSDN Article
SQL Server Central Article

Our adapted code will send you an alert for low space, a statement of drive space and a list of database sizes, we then scheduled it as part of a job to run at various times of the day.

You will need to set up an email account for your server to use, I will try and add an article for this myself, but in the mean time have a look at this article by Pinal Dave on SQL Authority.com or this MSDN Article.

SQL Code

USE [utilities]
GO
CREATE PROCEDURE [maint].[DiskFreeSpaceAlert]
@DriveCBenchmark int= 1024,
@OtherDataDriveBenchmark int= 10240,
@ProfileName sysname='DatabaseEmailProfileName',
@Recipients NVARCHAR(1000)='youremail@yourdomain'
AS BEGIN

IF EXISTS(SELECT * FROM tempdb..sysobjects
WHERE id =object_id(N'[tempdb]..[##disk_free_space]'))
DROP TABLE ##disk_free_space
CREATE TABLE ##disk_free_space(
DriveLetter CHAR(1) NOT NULL,
FreeMB INTEGER NOT NULL)

DECLARE @DiskFreeSpace INT
DECLARE @DriveLetter CHAR(1)
DECLARE @AlertMessage VARCHAR(500)
DECLARE @MailSubject VARCHAR(100)

INSERT INTO ##disk_free_space
EXEC master..xp_fixeddrives

SELECT @DiskFreeSpace = FreeMB FROM ##disk_free_space where DriveLetter ='C'

SET @MailSubject =''+@@SERVERNAME+' Disk Analysis'
EXEC msdb..sp_send_dbmail @profile_name=@ProfileName,
@recipients = @Recipients,
@subject = @MailSubject,
@query=N'SELECT DriveLetter,CAST(CAST(CAST(FreeMB ASDECIMAL(18,2))/CAST(1024 AS DECIMAL(18,2)) AS DECIMAL(18,2)) AS VARCHAR(20)) +'' GB '' SpaceAvailable FROM ##disk_free_space'

/* Get db sizes */
DECLARE @dbName sysname
CREATE TABLE ##TempDBNames(
DatabaseName sysname,
DATABASE_SIZE int,
REMARKS varchar(254))
INSERT INTO ##TempDBNames
EXEC sp_databases

CREATE TABLE ##DBInfo(
dbName sysname,
name sysname,
filepath sysname,
dbType VARCHAR(10),
dbSize INT,
DataModified DATETIME
)

DECLARE dbs CURSOR FOR
SELECT DatabaseName FROM ##TempDBNames

open dbs
fetch next from dbs into @dbName
WHILE (@@FETCH_STATUS= 0)
Begin
EXEC ('USE '+ @dbName +' INSERT INTO ##DBInfo SELECT '''+ @dbName +''',name,physical_name,type_desc,size,(SELECTMAX(modify_date) FROM sys.tables) LastModified FROM sys.database_files')
fetch next from dbs into @dbName
End
close dbs
deallocate dbs

SET @MailSubject =''+@@SERVERNAME+' Database Analysis'
EXEC msdb..sp_send_dbmail @profile_name=@ProfileName,
@recipients = @Recipients,
@subject = @MailSubject,
@query=N'SELECT dbName,dbType,(dbSize*8)/1024dbSize,DataModified FROM ##DBInfo'

DROP TABLE ##DBInfo
DROP TABLE ##TempDBNames
/* End get dbsizes */

IF @DiskFreeSpace < @DriveCBenchmark
Begin
SET @MailSubject ='Drive C free space is low on '+@@SERVERNAME
SET @AlertMessage ='Drive C on '+@@SERVERNAME+' has only '+ CAST(@DiskFreeSpace AS VARCHAR)+' MB left. Please freeup space on this drive. C drive usually has OS installed on it. Lower space onC could slow down performance of the server'

EXEC msdb..sp_send_dbmail @profile_name=@ProfileName,
@recipients = @Recipients,
@subject = @MailSubject,
@body = @AlertMessage
End

DECLARE DriveSpace CURSOR FAST_FORWARD FOR
select DriveLetter, FreeMB from ##disk_free_space where DriveLetter not in('C')

open DriveSpace
fetch next from DriveSpace into @DriveLetter,@DiskFreeSpace

WHILE (@@FETCH_STATUS= 0)
Begin
if @DiskFreeSpace <@OtherDataDriveBenchmark
Begin
set @MailSubject ='Drive '+ @DriveLetter +' free space is low on '+@@SERVERNAME
set @AlertMessage = @DriveLetter +' has only '+cast(@DiskFreeSpace as varchar)+' MB left. Please increase free space for thisdrive immediately to avoid production issues'

EXEC msdb..sp_send_dbmail @profile_name=@ProfileName,
@recipients = @Recipients,
@subject = @MailSubject,
@body = @AlertMessage
End
fetch next from DriveSpace into @DriveLetter,@DiskFreeSpace
End
close DriveSpace
deallocate DriveSpace
DROP TABLE ##disk_free_space
END

Please note!

We had to adapt our code above as someone copied the whole procedure in and sent us an email in Portuguese with their disk space details, so make sure you fill in the email address properly.