We are using Subversion (SVN 1.6.12-r955802).
Since the Apache version 2.2.24 has some security issues (multi-site security issue), we have moved to Apache version 2.2.25. But this updated version has the second commit issue. Issue details are given below.
"The issue with Apache 2.2.25 is when you have 'space' in folder name / file name. The first commit of these files / folders (with space in the name) is successful. We are facing issue only when subsequent commit is happening. We are using Tortoise SVN as client"