Have you ever run out of space on your Confluence server, but you don’t know who is downloading the most attachments?

To find out, you need access to the PostgreSQL confluence database.

Using SQL query to PostgreSQL database, you can find useful statistics on Confluence.

Total size of all attachments in Confluence:

SELECT s.spaceid,
s.spacename,
sum (LONGVAL)
FROM contentproperties c
JOIN content co ON c.contentid = co.contentid
JOIN spaces s ON co.spaceid = s.spaceid
WHERE c.contentid IN
(SELECT contentid
FROM content
WHERE contenttype = 'ATTACHMENT')
AND c.propertyname = 'FILESIZE'
GROUP BY s.spaceid
ORDER BY SUM DESC
LIMIT 5;

Output (spacename replaced):

Pages with most historical versions in conjunction:

SELECT title,
MAX (VERSION)
FROM content
WHERE contenttype = 'PAGE'
GROUP BY title
ORDER BY 2 DESC
LIMIT 5;

Output:

The largest attachment files in your Confluence instance

SELECT DISTINCT c.contentid,
c.title AS attachmentTitle,
u.username AS uploadedBy,
co.title AS pageTitle,
cn.longval AS bytes
FROM CONTENT AS c
JOIN USER_MAPPING AS u ON u.user_key = c.creator
JOIN CONTENT AS co ON c.pageid = co.contentid
JOIN CONTENTPROPERTIES AS cn ON cn.contentid = c.contentid
WHERE c.contenttype = 'ATTACHMENT'
AND cn.longval IS NOT NULL
ORDER BY cn.longval DESC
LIMIT 5;

Output:

The number of pages in the basket and the total size of pages in the basket per space:

SELECT Count (content.contentid) AS number_of_trashed_pages,
Pg_size_pretty (SUM (Pg_column_size (bodycontent.BODY))) AS trash_total_size,
spaces.spacename AS space_name
FROM bodycontent
INNER JOIN content ON (content.contentid = bodycontent.contentid)
INNER JOIN spaces ON (content.spaceid = spaces.spaceid)
WHERE bodycontent.contentid IN
(SELECT contentid
FROM content
WHERE content_status = 'deleted'
AND contenttype = 'PAGE')
GROUP BY space_name
ORDER BY trash_total_size
LIMIT 5;

Output:

Total size of attachments downloaded by each user on all pages

SELECT u.lower_username,
sum (cp.longval) AS "size"
FROM content c1
JOIN content c2 ON c1.contentid = c2.pageid
JOIN user_mapping u ON c1.creator = u.user_key
JOIN contentproperties cp ON c2.contentid = cp.contentid
WHERE c2.contenttype = 'ATTACHMENT'
GROUP BY u.lower_username
ORDER BY sum (cp.longval) DESC
LIMIT 5;

Output: