SVN commit Error

I am able to do SVN update, but when I do SVN commit it throws the error below:

Error:  Commit Failed (details follow):
Error:  Can't read from connection:  An existing connection was forcibly开发者_StackOverflow中文版 closed by the     
Error:  remote host

After this I can't even browse my repository from Visual SVN. It throws an error saying

Can't connect to host 'ddev':  No connection could be made because the target machine actively refused it.

I have to restart Subversion Server to browse and update.... but CAN'T commit.

Where should I look into ?

From the symptoms you've described, it sounds like your Subversion server is crashing when you try to commit (that's why you can't browse the repo after getting the first error). Have a look at the server logs to see if you can find out why.

I would look at the post commit hooks first.