METALINK
https://metalink.oracle.com/CSP/ui/index.html
RAC OTN FORUM
http://forums.oracle.com/forums/forum.jspa?forumID=384
GRID COMPUTING FORUM
http://forums.oracle.com/forums/category.jspa?categoryID=140
ORACLE HISTOGRAMS TIPS AND TECQNIQUES
http://www.dbazine.com/oracle/or-articles/hotka4
RAC SAMPLES and SERVER SIDE CALLOUTS
http://www.oracle.com/technology/sample_code/products/rac/index.html
TECHNICAL ARTICLES FOR DBAs AND SYSADMINs
http://www.oracle.com/technology/pub/articles/tech_dba.html
SQL/PLSQL INSTANT FORMATTER
http://www.dpriver.com/pp/sqlformat.htm
NICE DBA TIPS