Get DB Maximum Capacity Query?

Posted on 2010-11-17
Last Modified: 2012-05-10
I would like to run a query to determine the maximum DB size. This is for a Windows app that will be installed on various servers.
Question by:pointeman
LVL 21

Expert Comment

by:Jason Yousef, MS
ID: 34160655
DO you mean the maximum capacity for SQL server databases??
anyway Max size is "huge" far larger than anything you'll encounter (heck, just
buying the disks to reach the max size will break most budgets).

check this

or you can use this command to get the current DB size, but there's no such thing as maximim size, as databases are has auto growth, unless you turned it off !


EXEC sp_spaceused


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hope that helps
LVL 75

Assisted Solution

by:Anthony Perkins
Anthony Perkins earned 83 total points
ID: 34160835
And it should be added that the MSDE/Express Editions have limitations of 2GB, 4GB and 10GB, depending on the version.

Assisted Solution

subhashpunia earned 83 total points
ID: 34163092
For SQL Server 2008 the max size limit of database is 524,272 terabytes (TB).
LVL 69

Expert Comment

ID: 34164634
I would think he means the largest existing db on the instance.
LVL 21

Accepted Solution

Jason Yousef, MS earned 84 total points
ID: 34165554
OK, then run that, to get list of DBs along with Size, in DESC order
use master



        DATABASE_NAME   = db_name(s_mf.database_id),

        DATABASE_SIZE   = convert(int,

                                    case -- more than 2TB(maxint) worth of pages (by 8K each) can not fit an int...

                                    when convert(bigint, sum(s_mf.size)) >= 268435456

                                    then null

                                    else sum(s_mf.size)*8 -- Convert from 8192 byte pages to Kb



        sys.master_files s_mf


        s_mf.state = 0 and -- ONLINE

        has_dbaccess(db_name(s_mf.database_id)) = 1 -- Only look at databases to which we have access

    group by s_mf.database_id

order by DATABASE_SIZE desc

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or just run

EXEC sp_databases
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Author Comment

ID: 34165913
My idea is to simple check which SQL "version" is installed like so:

string limit;

if(sqlVersion == "Express 2005") //or ver# ????????????
   limit = "4GB"
else if(sqlVersion == "Express 2008") // or ver# 10.50.1600.1
   limit = "8GB";

Author Comment

ID: 34165933
Just found this, but unsure if it works for ALL Microsoft SQL versions:

SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition')

LVL 21

Expert Comment

by:Jason Yousef, MS
ID: 34166218
works for me in 2008 R2

Author Comment

ID: 34172672
Because I only need to know if the DB server is 'Express' or not, the following simple query works fine so far.

Select SERVERPROPERTY('EngineEdition')

         int eEditon = System.Convert.ToInt32(cmd.ExecuteScalar());

         if (eEditon == 4)//
               return true;

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Author Closing Comment

ID: 34301164
Thank you all........

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