Can't open file 'D:\Repositories\repo\db\current': The process cannot access the file because it is being used by another process

Hello,

I have a strange new problem with my Subversion setup. Various tasks are
failing intermittently with the above message. I've seen it with commits,
where a PROPFIND error is followed by the message in the subject, "svnsync
sync"s, and "svnadmin dump"s.

Using Windows 2003, Apache 2.2.4, Subversion 1.4.3, FSFS repository and an
svnsync that is indirectly run post-commit.

Unfortunately, lots of things have changed recently in my setup, and it isn't
really practical to go back to the original one:

- application of SP1,
- new (faster) server hardware,
- move from a VMware-hosted server to a native server,
- move to a new network,
- move to hosting the repositories on a RAID disk,
- additional post-commit script that sometimes rewrites the svn:author
  property,
- change of anti-virus software (which I have asked nicely to not concern
  itself with the contents of the repository areas)

However, I didn't start seeing the problem until a day or two ago, which is a
few days after making all those changes.

No-one here seems to be suffering the same problem, so I guess I'm not hopeful
of finding a solution. I did find something that looked like a possible:
turning off oplocks, as suggested at http://www.superbase.com/services_tech_support_net_fact_sheet.htm. But that
might only apply to Samba shares.

I'm sure the file locking behaviour has changed, because I used to be able to
copy large Apache logs from one place to another while they were still being
written to, but now I'm getting errors such as "The process cannot access the
file because another process has locked a portion of the file."

Any useful suggestions will be appreciated.

Thanks,

--
Jon Ashley
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