I'm going to say this even more clearly: If you backup a repository by copying its files while a server is running, the backup may be created corrupted.
http://subversion.apache.org/docs/release-notes/1.7#single-db (sic) Erik Huelsmann wrote on Wed, Jun 29, 2011 at 18:27:31 +0200: > Hi Waseem, > > On Wed, Jun 29, 2011 at 6:17 PM, Waseem Bokhari < > waseem.bokh...@netsoltech.com> wrote: > > > Hi Guys!**** > > > > We are using 3rd party software that take (Copy/Paste) > > Backup of all databases of SVN on differential basis. *I have some > > confusion.***** > > > > What's in all these **.txn folders (33740-q3q.txn, 1757-1d0.txn, > > 33753-q43.txn)* Please guide ? Are they of any use? What is their > > importance for Us? Could they be ignored or excluded?**** > > > > For some reason new set of files that are being dropped into these folders > > and they happen to be Alternate data streams, and which we do not seem to be > > able to pseudo mirror.**** > > > > Thanks in > > > > The only safe way to run a backup of a Subversion repository is to use the > 'svnadmin hotcopy' functionality or equivalent functionality in other > Subversion clients. > > With kind regards, > > > Erik.