Question : Oracle analyze table

Hey guys how can I find when had Oracle analyze table last time. And if it is not analyzed than how can I analyze a table. Thanks for your help in advance

Answer : Oracle analyze table

ANALYZE TABLE employees COMPUTE STATISTICS;
ANALYZE INDEX employees_pk COMPUTE STATISTICS;

ANALYZE TABLE employees ESTIMATE STATISTICS SAMPLE 100 ROWS;
ANALYZE TABLE employees ESTIMATE STATISTICS SAMPLE 15 PERCENT;

Read this article for more:

http://www.oracle-base.com/articles/8i/CostBasedOptimizerAndDatabaseStatistics.php