Cursor For Loop SQL/PL right application? Need help with PL Performance

Question

I will preface this post by saying that I am a novice Oracle PL user, so an overexplanation would not be an issue here.
Goal: Run a hierarchial query for over 120k rows and insert output into Table 1. Currently I am using a Cursor For Loop that takes the first record and puts 2 columns in "Start" section and "connect by" section. The hierarchial query runs and then it inserts the output into another table. I do this 120k times( I know it's not very efficient). Now the hierarchial query doesn't take too long ( run by itself for many parts) but this loop process is taking over 9 hrs to run all 120k records. I am looking for a way to make this run faster. I've read about "Bulk collect" and "forall", but I am not understanding how they function to help me in my specific case.
Is there anyway I can rewrite the PL/SQL Statement below with the Cursor For loop or with another methodology to accomplish the goal significantly quicker?
Below is the code ( I am leaving some parts out for space)
CREATE OR REPLACE PROCEDURE INV_BOM is
CURSOR DISPATCH_CSR IS
select materialid,plantid
from INV_SAP_BOM_MAKE_UNIQUE;
Begin
For Row_value in Dispatch_CSR Loop
begin
insert into Table 1
select column1
,column2
,column3
,column4
from( select ..
from table 3
start with materialid = row_value.materialid
and plantid = row_value.plantid
connect by prior plantid = row.value_plantid
exception...
end loop
exception..
commit

Answer 1

BluShadow:
The table that the cursor is pulling from ( INV_SAP_BOM_MAKE_UNIQUE) has only 2 columns
Materialid and Plantid
Example
Materialid Plantid
100-C 1000
100-B 1010
X-2 2004
I use the cursor to go down the list 1 by 1 and run a hierarchical query for each row. The only reason I do this is because I have 120,000 materialid,plantid combinations that I need to run and SQL has a limit of 1000 items in the "start with" if I'm semi-correct on that.
Structure of Table it would be inserted into ( Table 1) after Hierarchical SQL Statement runs:
Materialid Plantid User Create Column1 Col2
100-C 1000 25 EA
The Hierarchical query ran gives the 2 columns at the end.
I am looking for a way to either just run a quicker SQL or a more efficient way of running all 120,000 materialid, plantid rows through the Hierarchial Query.
Any Advice? I really appreciate it. Thank You.