SQL Server 2008: How to query all databases sizes?
I have MS SQL 2008 R2, 500 databases. What is the most efficient, easiest and 'modern' way to query all databases sizes.
The output should have columns:
- DatabaseName
- DataFilesSize
- LogFilesSize
Solution 1:
with fs
as
(
select database_id, type, size * 8.0 / 1024 size
from sys.master_files
)
select
name,
(select sum(size) from fs where type = 0 and fs.database_id = db.database_id) DataFileSizeMB,
(select sum(size) from fs where type = 1 and fs.database_id = db.database_id) LogFileSizeMB
from sys.databases db
Solution 2:
I don't know exactly what you mean by efficiency but this is straightforward and it works for me:
SELECT
DB_NAME(db.database_id) DatabaseName,
(CAST(mfrows.RowSize AS FLOAT)*8)/1024 RowSizeMB,
(CAST(mflog.LogSize AS FLOAT)*8)/1024 LogSizeMB,
(CAST(mfstream.StreamSize AS FLOAT)*8)/1024 StreamSizeMB,
(CAST(mftext.TextIndexSize AS FLOAT)*8)/1024 TextIndexSizeMB
FROM sys.databases db
LEFT JOIN (SELECT database_id, SUM(size) RowSize FROM sys.master_files WHERE type = 0 GROUP BY database_id, type) mfrows ON mfrows.database_id = db.database_id
LEFT JOIN (SELECT database_id, SUM(size) LogSize FROM sys.master_files WHERE type = 1 GROUP BY database_id, type) mflog ON mflog.database_id = db.database_id
LEFT JOIN (SELECT database_id, SUM(size) StreamSize FROM sys.master_files WHERE type = 2 GROUP BY database_id, type) mfstream ON mfstream.database_id = db.database_id
LEFT JOIN (SELECT database_id, SUM(size) TextIndexSize FROM sys.master_files WHERE type = 4 GROUP BY database_id, type) mftext ON mftext.database_id = db.database_id
With results like:
DatabaseName RowSizeMB LogSizeMB StreamSizeMB TextIndexSizeMB
------------- --------- --------- ------------ ---------------
master 4 1.25 NULL NULL
model 2.25 0.75 NULL NULL
msdb 14.75 8.1875 NULL NULL
tempdb 8 0.5 NULL NULL
Note: was inspired by this article
Solution 3:
Here's a simple, quick and reliable query that will give all database and log file names, sizes and also database statuses (e.g. ONLINE) in a nice, easy to read output:
SELECT
D.name,
F.Name AS FileType,
F.physical_name AS PhysicalFile,
F.state_desc AS OnlineStatus,
CAST(F.size AS bigint) * 8*1024 AS SizeInBytes,
CAST((F.size*8.0)/1024/1024 AS decimal(18,3)) AS SizeInGB
FROM
sys.master_files F
INNER JOIN sys.databases D ON D.database_id = F.database_id
ORDER BY SizeInBytes desc
Solution 4:
with Total Database size ordered Desc
SELECT
DB_NAME(db.database_id) DatabaseName,
(CAST(mfrows.RowSize AS FLOAT)*8)/1024 RowSizeMB,
(CAST(mflog.LogSize AS FLOAT)*8)/1024 LogSizeMB,
(CAST(mfrows.RowSize AS FLOAT)*8)/1024/1024+(CAST(mflog.LogSize AS FLOAT)*8)/1024/1024 DBSizeG,
(CAST(mfstream.StreamSize AS FLOAT)*8)/1024 StreamSizeMB,
(CAST(mftext.TextIndexSize AS FLOAT)*8)/1024 TextIndexSizeMB
FROM sys.databases db
LEFT JOIN (SELECT database_id,
SUM(size) RowSize
FROM sys.master_files
WHERE type = 0
GROUP BY database_id, type) mfrows
ON mfrows.database_id = db.database_id
LEFT JOIN (SELECT database_id,
SUM(size) LogSize
FROM sys.master_files
WHERE type = 1
GROUP BY database_id, type) mflog
ON mflog.database_id = db.database_id
LEFT JOIN (SELECT database_id,
SUM(size) StreamSize
FROM sys.master_files
WHERE type = 2
GROUP BY database_id, type) mfstream
ON mfstream.database_id = db.database_id
LEFT JOIN (SELECT database_id,
SUM(size) TextIndexSize
FROM sys.master_files
WHERE type = 4
GROUP BY database_id, type) mftext
ON mftext.database_id = db.database_id
ORDER BY 4 DESC