That is a sample URL and doesn't actually exist. To find out what OAI URL to use, go to your OJS installation and look at setup page 3 (depending on your version of OJS). Under the heading "Register Journal for Indexing" you should find your OAI URL. OAI must be enabled in config.inc.php, but it is by default, so unless you've changed it you don't need to worry.
Open Journal Systems Team
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