Tuning - Optimizer Statistics  
Indicate search criteria and press 'Select'.
Owner 
Table Name 
Select from tables 
Select max. rows 
Use Estimate by ... 
... Rows 
... Percent 
Include columns for marked tables 
Mark the tables to be optimized statistics.
    Owner     Table Name     Last Update  

%*Owner*%

%*Table*%

%*Date*%

%*Owner*%

%*Table*%

%*Date*%

Mark the columns to be optimized statistics.
    Owner     Table Name     Column Name  

%*Owner*%

%*Table*%

%*Column*%

%*Owner*%

%*Table*%

%*Column*%

Optimize statistics successfully finished.
  Select     Execute     Execute     Back