Ask Tom: http://asktom.oracle.com/pls/asktom/f?p=100:1:0
Metalink: http://metalink.oracle.com/
Oracle 10.2g document: http://download-east.oracle.com/docs/cd/B19306_01/index.htm
Oracle OTN Forum: http://forums.oracle.com/forums/category.jspa?categoryID=18
ITPUB: http://www.itpub.net/