Select will not displaying the Rows in any order

Question

hai
in oracle 8i if i give run this
SELECT "Payor Name","UnappliedMonth1" AS "Apr 04", "UnappliedMonth2" AS "Mar 04",
"UnappliedMonth3" AS "Feb 04", "UnappliedMonth4" AS "Jan 04", "UnappliedMonth5" AS "Dec 03", "UnappliedMonth6" AS "Nov 03", "UnappliedMonth7" AS "Oct 03", "UnappliedMonth8" AS "Sep 03", "UnappliedMonth9" AS "Aug 03", "UnappliedMonth10" AS "Jul 03",
"UnappliedMonth11" AS "Jun 03",
"Total Cash Applied" AS "Total Cash Applied", "Total Unapplied Cash" AS "Total Unapplied Cash", "Percentage Unapplied" AS "Percentage Unapplied" FROM "RP_Unapplied0I1" GROUP BY "Payor Name", "UnappliedMonth1", "UnappliedMonth2", "UnappliedMonth3", "UnappliedMonth4", "UnappliedMonth5", "UnappliedMonth6", "UnappliedMonth7", "UnappliedMonth8", "UnappliedMonth9", "UnappliedMonth10", "UnappliedMonth11", "Total Cash Applied", "Total Unapplied Cash", "Percentage Unapplied"
statement it is displaying the result in ascending order
but if i run in oracle 9i It is not displaying in a ascending order
what is the problem?
please help me

Answer 1

Yes.
Please note that without the presence of an ORDER BY clause Oracle is free to display the resultset in any order it may choose (may depend on the plan the optimizer comes up with).
if you need results displayed in a particular order, you MUST supply an ORDER BY clause.
You cannot rely on the order of the resultset as you get today when executing the query (if not using ORDER BY clause), since the ordering can (and will) change in the future.