How to find out Subversion repository version?

Question

How can I determine current version of my repository to see if I need to upgrade it (svnadmin upgrade)?

In reality I\'m hosting SVN with 3rd party and I want to find

Answer 1

Have a look at <REPO>/db/format. After upgrading to 1.5 format, my format file shows:

3
layout sharded 1000

Before it used to be:

2

Answer 2

Take the http or https link to your repository and cut & paste it into a browser. The Subversion repository server version appears in the footer by default.

Powered by Subversion version 1.4.5 (r25188).

One would assume that a 1.4 server won't be running against a 1.5 repository.

For details, see the Subversion 1.5 Release Notes

Thanks to @Omus for the correction.