I dont see content aware tool on my tool bar whare is it
Yea I dont have that bar or for that matter a 3d after filter on the top and only bar.
The Options Bar should be visible if it is enabled near bottom of Window menu: Window > Options.
If you have CS6 Extended or CS5 Extended then there should be a 3D menu.
Have you purchased PS Standard or Extended? 3D Menu is only available in PS CS6 Extended.
May i know which operating system do you have?
Could you try resetting the PS CS6 preferences. http://forums.adobe.com/thread/375776
Also, try to open PS CS6 in Plugin Disabled mode. For that Press Shift+PS CS6 icon.