came across 2 more new sites...
1...http://eternal-donut.blogspot.com/
owner of pictural company in australia.. he is a oracle ace..
and he owns this site
His site has contents for sotring multimedia .. in oracle

2...
Richard Foote is another oracle ace...and he has gone in depth in oracle dba tuning
http://richardfoote.wordpress.com/
He is currently in Australia..