sql - PostgreSQL から Oracle へのデータベース移行

Question

データベース サーバーを PostgreSQL から Oracle 11g に移行しています。Squirrel SQLなどのさまざまなツールを試しました。ただし、ほとんどの移行ツールは、テーブルとビューの移行をサポートしています。手順と機能を移行するための解決策が見つかりません。機能と手順を移行する方法を教えてください。以下の機能のいずれかを見つけてください。

CREATE OR REPLACE FUNCTION hrms.fngetstatus(iactdate character varying, ideactdate character varying)
  RETURNS character varying AS
$BODY$
   returnval   VARCHAR (1);
BEGIN
   IF     TO_DATE (iactdate, 'mm/dd/yyyy') >
                      TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
      AND TO_DATE (ideactdate, 'mm/dd/yyyy') >
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
   THEN
        returnval := 'D';
   ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') >
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') IS NULL
   THEN

       returnval := 'D';
   ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') <=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') >
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
   THEN
        returnval := 'A';
   ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') <=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') IS NULL
   THEN
      returnval := 'A';
   ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') <
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') <=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
   THEN
      returnval := 'D';
   ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') =
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') =
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
   THEN
      returnval := 'D';
        ELSIF     TO_DATE (ideactdate, 'mm/dd/yyyy') >=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (iactdate, 'mm/dd/yyyy') is null                      
   THEN
      returnval := 'A';  
        ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') <=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') <
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')   
   THEN
      returnval := 'A';  
        ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') >
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') <
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')   
   THEN
      returnval := 'D';   
          ELSIF     TO_DATE (iactdate, 'mm/dd/yyyy') >
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')
         AND TO_DATE (ideactdate, 'mm/dd/yyyy') <=
                       TO_DATE (TO_CHAR (SYSDATE, 'mm/dd/yyyy'), 'mm/dd/yyyy')   
   THEN
      returnval := 'D';    
   END IF;
   RETURN returnval;
END$BODY$
  LANGUAGE edbspl VOLATILE SECURITY DEFINER
  COST 100;
ALTER FUNCTION hrms.fngetstatus(character varying, character varying)
  OWNER TO enterprisedb;