Querying log size

I'm about to write a script to tell me the log size before/after some events.
So I was looking into the sys.xxx to see where I could find the one for log size and came up with
select * from sys.database_files
This tells me the log is 3163192 (31GB) yet when I double check this with windows explorer the log (file size) is 25GB.
I have right clicked and ensured the size on disk is also 25GB.
When I look at the disk space usage reports it says the log is 24.7GB and 99.3% unused.

Why the huge size difference between what windows explorer tells me and what database_files says.
LVL 29
QPRAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

momi_sabagCommented:
which column of sys.database_files did you check in order to determine the size?
0
RimvisCommented:
sys.database_files stores size in pages. Page size is 8KB

To get size in GB use this:
select (siZe  * 8)/(1024.0*1024.0)AS SizeInGB, *    from sys.database_files
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
vinurajrCommented:
sp_helpdb DBName will tells the exact file size or the sysdatabases
you Interpreted wrongly.... The size in the sys.database_files is nothing but Current size of the file, in 8-KB pages.


select (3163192*8)/(1024.0*1024.0)
0
QPRAuthor Commented:
ahhh I see I was using select size/1000 and assumed I was dealing with actual file size.
Points split:
Rimvis for pointing out my problem and vinurarj for reminding me about sp_helpdb which I will now use
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2005

From novice to tech pro — start learning today.