Mostafa, Try the Oracle By Example tutorials on OTN, they are very detailed with screen shots, lots of topics, including RAC and DataGuard Regards, Luis Freitas ________________________________ From: Mostafa Eletriby <m_etrib@xxxxxxxxx> To: ora-apps-dba@xxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx; oracle-tips@xxxxxxxxxxxxx Sent: Thu, June 9, 2011 8:04:48 AM Subject: Need simulation materials for learning RAC & Dataguard Hello DBAs, Please I need simulation materials for learning Oracle RAC 10g or 11g & Oracle Data-Guard. Also any useful links that can help at installation & managing these technologies. Your response is highly appreciated. Thanks Mostafa