REF :
- http://www.orafaq.com/wiki/DBMS_SCHEDULER
- http://docs.oracle.com/cd/B19306_01/appdev.102/b14258/d_sched.htm
- http://www.oracleutilities.com/OSUtil/tkprof.html
- http://www.oracleutilities.com/
- http://www.oracleutilities.com/Packages/TraceAnalyzer_IOUG.pdf
- http://www.oracleutilities.com/Ora10GUtilities.pdf
- http://www.comp.nus.edu.sg/~ooibc/courses/sql/
