New To Oracle.. Needs Help:: Conversion from SQL Server to Oracle 11g

Question

I am new to Oracle 11g and badly need the conversion of SQL Server Functions to Oracle.. Sample Pasted Code not working .. end with error.. pls help
Create Table TempT (ID1 Varchar (10),
ID2 Varchar (10)
CREATE OR REPLACE PACKAGE GLOBALPKG
AS
TYPE RCT1 IS REF CURSOR;
TRANCOUNT INTEGER := 0;
IDENTITY INTEGER;
END;
CREATE OR REPLACE FUNCTION fTempT
i IN VARCHAR2 DEFAULT NULL
RETURN GLOBALPKG.RCT1
IS
REFCURSOR GLOBALPKG.RCT1;
BEGIN
OPEN REFCURSOR FOR
SELECT TT.*
FROM TempT TT
WHERE (fTempT.i = ''
OR TT.ID1 = fTempT.i)
RETURN REFCURSOR;
END;
CREATE OR REPLACE FUNCTION fTempTF
i IN VARCHAR2 DEFAULT NULL
RETURN GLOBALPKG.RCT1
IS
REFCURSOR GLOBALPKG.RCT1;
BEGIN
OPEN REFCURSOR FOR
SELECT *
FROM TABLE(fTempT(i))
RETURN REFCURSOR;
END;
LAST FUNCTION ENDs WITH ERROR
Error(13,7): PL/SQL: ORA-22905: cannot access rows from a non-nested table item

Answer 1

2. The major purpose is to get a simplest way to create a parameterized function who can return a table like output. 2nd function has no use instead i was testing the result of First Function like thisIf you just want to select from a select, you should use a view not a function.
1. which program is more help ful for writing and executing queries bcoz after using Query Analyzer of Microsoft It seems difficult to work on SQL Developer.
sqlplus? If you are having difficulty learning new tools because of an old one you used, probably best to forget the old one and concentrate on learning the new one because it will be different. This goes for the database itself also.
2. Can DMLs be used within a Function.Yes, you just can't execute the function in another SQL statement if it modifies data and this is a good thing.
3. Can temporary tables be used within a function.Unfortunately yes, but they shouldn't be unless you are in a slowest application competition.
5. Each Function which is a Table Function must be accompanied with Type Definitions?? its a bit longer way of doing the things than SQL ServerThat is why it is better to use views instead, is there any reason you want a select that you can select from inside a function?
SQL Server for last 9 years thats why i refer this toolThat is not in itself a problem, if you try and do what you did in SQLServer in Oracle, that will be a problem though.