[svn] SVN Error: Commit blocked by pre-commit hook (exit code 1) with output: Error: n/a (6)

I got the error as, "svn: Commit blocked by pre-commit hook (exit code 1) with output: Failed with exception: Lost connection to MySQL server at 'reading initial communication packet', system error: 104."

I tried 'svn commit' after 'svn cleanup'. And It works fine!.