There are no licenses required for Data Guard - it is included with Enterprise Edition of the database and you can do log shipping on your own in Standard Edition. I believe the only licenses associated with Data Guard are the Database licenses required for the standby server, and in 11g a separate license is required specifically for the new Active Data Guard feature. Here is a link to the relevant doc: http://download.oracle.com/docs/cd/B19306_01/license.102/b14199/editions.htm#BABJICBB Table 1-1 Feature Availability for Oracle Database Editions Feature/Option SE1 SE EE Notes High Availability Oracle Data Guard-Redo Apply N N Y Oracle Data Guard-SQL Apply N N Y Regards, Brandon ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.