converting to Oracle sp from SQL Server 2 lines "not recognized" - oracle11g

Question

I am using the Oracle SQL Developer Scratch Editor tool. There are a couple of small errors, I am not sure how to fix.
--SQLDEV:Following Line Not Recognized
WHILE #I <= #PAT_CNT
--SQLDEV:Following Line Not Recognized
BEGIN
SELECT PAT_NUMBER ,
PATIENT_ID ,
MRN ,
LAST_NAME ,
FIRST_NAME ,
UNIT_CODE ,
NURSING_UNIT ,
SDT ,
EDT ,
SHIFT_CODE ,
START_TIME ,
END_TIME
INTO v_PAT_NUMBER,
v_PATIENT_ID,
v_MRN,
v_LAST_NAME,
v_FIRST_NAME,
v_UNIT_CODE,
v_NURSING_UNIT,
v_SDT,
v_EDT,
v_SHIFT_CODE,
v_START_TIME,
v_END_TIME
FROM tt_v_PATS
WHERE PKEY = v_I;
BEGIN
v_L_CUR_DATE := TRUNC_DATE(v_P_START_DATE) ;
END;
--SQLDEV:Following Line Not Recognized
WHILE #L_CUR_DATE <= OPTC.TRUNC_DATE(#P_END_DATE)
--SQLDEV:Following Line Not Recognized
BEGIN

Answer 1

It's not obvious to me exactly what you are attempting to do here...
In PL/SQL, variables are declared in the DECLARE section of an anonymous PL/SQL block or in the IS/ AS section of a named PL/SQL block (a stored procedure or a stored function). In PL/SQL, a BEGIN needs to be paired with an END-- I see a bunch of BEGIN statements in your code with no associated END. And in PL/SQL, you don't use # to refer to variables.
Something like this is syntactically valid, it's not obvious that it does what you want, however.
DECLARE
v_PAT_NUMBER tt_v_PATS.PAT_NUMBER%type;
v_PATIENT_ID tt_v_PATS.PATIENT_ID%type;
v_MRN tt_v_PATS.MRN%type;
v_LAST_NAME tt_v_PATS.LAST_NAME%type;
v_FIRST_NAME tt_v_PATS.FIRST_NAME%type;
v_UNIT_CODE tt_v_PATS.UNIT_CODE%type;
v_NURSING_UNIT tt_v_PATS.NURSING_UNIT%type;
v_SDT tt_v_PATS.SDT%type;
v_EDT tt_v_PATS.EDT%type;
v_SHIFT_CODE tt_v_PATS.SHIFT_CODE%type;
v_START_TIME tt_v_PATS.START_TIME%type;
v_END_TIME tt_v_PATS.END_TIME%type;
v_pat_cnt integer := 100;
BEGIN
FOR i IN 1 .. v_pat_cnt
LOOP
SELECT PAT_NUMBER ,
PATIENT_ID ,
MRN ,
LAST_NAME ,
FIRST_NAME ,
UNIT_CODE ,
NURSING_UNIT ,
SDT ,
EDT ,
SHIFT_CODE ,
START_TIME ,
END_TIME
INTO v_PAT_NUMBER,
v_PATIENT_ID,
v_MRN,
v_LAST_NAME,
v_FIRST_NAME,
v_UNIT_CODE,
v_NURSING_UNIT,
v_SDT,
v_EDT,
v_SHIFT_CODE,
v_START_TIME,
v_END_TIME
FROM tt_v_PATS
WHERE PKEY = i;
<<do something with the local variables>>
END LOOP;
END;
Of course, you can also use record types to simplify your code a bit
DECLARE
v_PATS_REC tt_v_PATS%rowype;
v_pat_cnt integer := 100;
BEGIN
FOR i IN 1 .. v_pat_cnt
LOOP
SELECT *
INTO v_PATS_REC
FROM tt_v_PATS
WHERE PKEY = i;
<<do something with the record>>
END LOOP;
END;