space check

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space check

mobasha

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March 22, 2008 at 7:07 am

#183532

Comments posted to this topic are about the item space check
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MobashA

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ksullivan SSCrazy Points: 2346 More actions · Answer 1

There is no need to include upper() in the where clause. TSQL is not case sensitive. Since the minumum allowable amount of space may vary between systems it makes more sense to me to have parameters for the allowable space by drive than to hardcode them. The original script was overly generous in declaring space for its variables. One example, since @convertedC is being set to convert(varchar(20),@c) then @convertedC does not need to be any bigger than 20. And @string would never get any near as long as 8000 characters.

Revised code:

alter procedure harddisk_check_space

@MinOkC int = 20,

@MinOkNotC int = 3

as

begin

declare @mytable table (drive varchar(10),sp int)

declare @C int

declare @notc int

insert into @mytable exec master.dbo.xp_fixeddrives

select @C=sp from @mytable

where drive='C'

select @notc=sum(sp) from @mytable

where drive<>'C'

set @C=@c/1000

set @notc=@notc/1000

if(@c < @MinOkC or @notc < @MinOkNotC)

begin

declare @string varchar(120)

declare @convertedC varchar(20)

declare @convertedNotC varchar(20)

set @convertedC=convert(varchar(20),@c)

set @convertedNotC=convert(varchar(20),@notc)

set @string='there is not enough space left on the server, '+@convertedC+' GB left on C: and '+@convertedNotC+' GB left on the other drives'

raiserror(@string,16,1) with log

-- print (@string)

end

Jeff Moden SSC Guru Points: 1004406 More actions · Answer 2

ksullivan (3/22/2008)
There is no need to include upper() in the where clause. TSQL is not case sensitive.

Not quite true... the default is to setup SQL Server so that it is neither Case nor Accent Sensitive. However, I've seen many servers that have been setup to be Case Sensitive. If you're trying to make code work in any Case Sensitive environment, the use of UPPER or LOWER is prudent.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Michael Sallmen SSC Enthusiast Points: 181 More actions · Answer 3

Maybe it's trivial, but shouldn't the divisor to convert MB to GB be 1024? Otherwise, the free space calculated is more than what is truly available.