How to write stored procedure to spool data into file

Question

Hi ,
We get differnt excel sheets of differnt products.
We upload data from excel sheet to database . After uploading data , I run Preprossor (sql script) to check the data
This preprocessor script contains several select statements that query different tables in database .the output is spooled into a cvs file .
I need to change this script into a stored procedure and spool the output to cvs file.
File spooling should be done inside the stored procedure so that if I call this stored procedure from java program ,or any concurrent program,its output is .cvs file and in parameter should be productname.
But inside the stored procedure , we cannot spool the data to some .cvs file . Is any way.I do not want to spool to file when calling.It should be inside stored procedure.
Or do I need to create a table and insert all the select statements output into it .
Here is the sample preprocessor script.
spool Graco_Product.csv
set head off
set feedback off
set Pagesize 100
SELECT '1. EVERY ASSEMBLY GROUP ADDED IN sys_PRODUCT TABLE MUST HAVE AT LEAST ONE ITEM IN WOC_ASSEMBLY_ITEM'
     FROM DUAL;
SELECT 'ASSEMBLY_GROUP_NAME'
     FROM DUAL;
SELECT
     assembly_group_name
     FROM association
     WHERE product_model_name = 'Graco_Product'
     AND assembly_group_name NOT IN (SELECT DISTINCT assembly_group_name FROM woc_assembly_item);
SELECT '2. A RULE SHOULD HAVE AT LEAST ONE EXPRESSION FOR ITS ACTION SIDE.'
     FROM DUAL;
SELECT 'RELATION_ID , RELATION_TYPE'
     FROM DUAL;
SELECT wr.Relation_ID                    ||','||
     wr.Relation_Type                    
     FROM WOC_Relation wr
     WHERE NOT EXISTS (SELECT 'X' FROM WOC_Relation_Expression wre
WHERE wre.Relation_Side = 'Action'
AND wr.Relation_ID = wre.Relation_ID)
     AND wr.Relation_Type NOT IN ( 'Rule Warning','Rule Resource','Rule Default');
SELECT '3. PROPERTIES USED IN RULES SHOULD EXIST IN WOC_PROPERTY_MASTER -- EXP_LHS_VALUE'
     FROM DUAL;
SELECT
     'RELATION_OWNER,EXP_LHS_OPERAND,RELATION_SIDE,RELATION_ID,EXP_LHS_VALUE,RELATION_TYPE'     
     FROM DUAL;
SELECT
     b.relation_owner               ||','||
     a.exp_lhs_operand               ||','||
     a.relation_side                    ||','||
     a.relation_id                    ||','||
     a.exp_lhs_value                    ||','||
     b.relation_type
     FROM woc_relation_expression a, woc_relation b
     WHERE a.exp_lhs_value IS NOT NULL
     AND a.exp_lhs_value_type = 'Property'
     AND a.exp_lhs_value NOT IN (SELECT property_name FROM woc_property)
     AND b.product_model_name = 'Graco_Product'
     AND a.relation_id = b.relation_id;
SELECT '--------------------------------------------------------------------------------'
from dual;
spool off
set head on
set feedback on

Answer 1

High level description
Full documentation
Note that the UTL_ and DBMS_ packages are all covered in the PL/SQL Packages and Types Reference.
You may also want to read up on the CREATE DIRECTORY statement, which lets you refer to an actual OS directory (which you create separately) via a database object.