Hi I was reading up the pythian blogs and came across this comment by Alex Fatkulin.(I am sure alex is frequenting this list) Can somebody have a look at this thread and explain what alex means by Quote Backup optimization is “all or nothing” - it can (and will) affect other things Unqote I am curious to know what effect does it have if i enable it in my environment and what positive and negative implications could there possibly be. http://www.pythian.com/blogs/478/plus-archivelog-and-rman-optimization I have a host of 9i and 10g databases regards Hrishy regards Hrishy __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html -- //www.freelists.org/webpage/oracle-l