I have two website with same content?

[Jake]

It could dilute the search ranking of each site, having 1 site on page one is way better than 2 sites on page 2 of the search results. The effect is probably not that dramatic but it may be detrimental to the original site, it may be more so if Google can identify a common owner by a shared server IP address.

One aid you might read up on is the Canonical tag, intended mainly for duplicates within a site, like a print formatted version of a page, you can show the search engines which copy is the master copy that should get search ranking, it can be used to point to another site as the source.

http://moz.com/community/q/using-the-can...le-domains

http://moz.com/learn/seo/canonicalization