Hi guys, What is the best tool to use for general instance performance monitoring: statspack or awr? It seems that these both tools produce nearly identical reports. However awr requires additional licensing to access dba_hist views. What is the difference? Is anyone using spViewer or similar tools to perform analysis of database performance problems? Thanks. _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE