If it's a corrupted revision, the server's error log should say something.
Ryan Schmidt wrote on Wed, Jan 05, 2011 at 20:48:34 -0600: > On Jan 5, 2011, at 08:18, zhangfan wrote: > > > I am using svn1.6.3. I put all source code and documents of our > > team into one repo. It works great for two years until last month. Now when > > I run ‘svn log http://192.168.0.3:907/svn’ (where 192.168.0.3 is our > > server’s address), svn returns ‘svn: REPORT request failed on > > '/svn/!svn/bc/20890' after returned some log information. > > You say it does return some log information, but not all of it? Sounds like > maybe a corrupted revision in the repository. You could try running "svnadmin > verify". There are also some other tools you could run depending on whether > it's a BDB or FSFS repository. > >
