How do you gather statistics? How frequently you do that? Who will you identify there is a need to gather statistics?
11i and R12: Are there any recommended/ideal Percentages for running Gather Schema Statistics across e-Business Suite? [ID 1184276.1]
Concurrent Processing - How To Gather Statistics On Oracle Applications Release 11i and/or Release 12 - Concurrent Process,Temp Tables, Manually [ID 419728.1]
Definition of Parameters Used in Gather Schema Statistics Program [ID 556466.1]
How Often Should Gather Schema Statistics Program be Run? [ID 168136.1]
How to Identify when a Table/Index was Last Analyzed by Gather Schema Statistics [ID 1434191.1]