Data Guard Software

Hello Everyone! Can anybody give a documentation regarding Data Guard Software? I really need to gather data or study about this so called Data Guard Software.

My colleague and I are planning to set - up and configure Data Guard Software to our back up server. As for now, my knowledge with this software is limited. So pls help me and guide where to get some info's about it.

By the way, we are using SAP R/3 46c and AIX5L 5.2 and Oracle 9.2.

Thanks,

Armin