dbms_random.value
SQL> SQL> set serverout on SQL> exec dbms_output.put_line( dbms_random.value ); .02384074069949541946799357018112732833 PL/SQL procedure successfully completed. SQL> SQL> set serverout on SQL> exec dbms_output.put_line( dbms_random.value ); .9204517146492220886865737108916710535 PL/SQL procedure successfully completed. SQL> --