I am in a Data Centre Migration project where we are moving ebiz data and apps from a US data centre to Asia. We have DataGuard configured but the bandwith is a constraint when handling the daily spike in redo volumes. What options (software / hardware / business / users / concurrent requests ) do you explore? Typically what bandwidth is used to clone a 600GB database and daily volumes of 65GB of redo (spike if 30GB in a 4-hour peak window) ? Hemant K Chitale sent from my smartphone -- //www.freelists.org/webpage/oracle-l