Fetching the record one by one dynamically Oracle - oracle

Question

I am creating a dynamic procedure which could accept 2 table names.Fetch the records from one table and after certain record (let's say 100 records) i have to issue the commit command.
Both tabName and temp_tabName are always be identical.Since I have billions of records in first table i am doing the commit after every 10000 records in order to get rid of undo table space problem.
Till now what i did is :
CREATE OR REPLACE PROCEDURE MyProdecure (
tabName IN USER_TABLES.table_name%TYPE,
temp_tabName IN USER_TABLES.table_name%TYPE
)
IS
v_sql VARCHAR2 (100) := 'select * from ' || tabName;
TEMP_CURSOR SYS_REFCURSOR;
COUNT NUMBER (6) := 0;
BEGIN
OPEN TEMP_CURSOR FOR v_sql;
LOOP
FETCH TEMP_CURSOR INTO V_ROW;
--=================================================================================
/*
* I need the code here to fetch the 100 record from TEMP_CURSOR into a Variable
* and insert into the second table. or one record increment the count and if
* count>= 100 commit
*What would be the data type of V_ROW. How to fetch the data from V_ROW and complete the insert into command.
*/
--================================================================================
EXIT WHEN TEMP_CURSOR%NOTFOUND;
END LOOP;
CLOSE TEMP_CURSOR;
END MyProdecure;

Answer 1

There is no way to define V_ROW in such a way as to make your PL/SQL block work correctly for an input table whose name and structure is not known until runtime.
To make your approach work, you would need to use DBMS_SQL.
Have you considered a variation of the following, to bypass the vast majority of the UNDO generation?
CREATE OR REPLACE PROCEDURE MyProcedure (
tabName IN USER_TABLES.table_name%TYPE,
temp_tabName IN USER_TABLES.table_name%TYPE
)
IS
l_log_io NUMBER;
C_BLOCK_SIZE NUMBER := 8192; -- assuming 8192 byte block size
l_undo_bytes NUMBER;
BEGIN
EXECUTE IMMEDIATE 'INSERT /*+ APPEND */ INTO ' || temp_tabName ||
' SELECT * FROM ' || tabName;
select t.log_io, t.used_ublk*C_BLOCK_SIZE undo_bytes
into l_log_io, l_undo_bytes
from v$transaction t
where t.addr = ( SELECT s.taddr FROM v$session s WHERE s.sid = USERENV('SID'));
dbms_output.put_line('Undo bytes used: ' || l_undo_bytes);
END;
INSERT /*+ APPEND */ comes with a number of caveats that you should look into before using it, but it could be a much simpler way of accomplishing your goal.