Spool Command with dbms_metadata.GET_DDL function

Question

Hi All,
My requirement is before applying a patch on the Database Schema, I need to take a backup of the db objects DDL script, so that incase if I want to rollback I can use it. what I am trying to use is the dbms_metadata.GET_DDL function to get the DDL script and with the help of spool command store that in a text file.
The problem I am encountering is the whole script runs without an error but whne I check the spool file for certain big packages the DDL script is not fully exported. The below is the script that I make use of to generate the DDL script.
set heading off
set feedback off
set echo off
set term off
set newpage none
set space 0
set trimout on
set TRIMSPOOL ON
column c1 format a4000
set long 99999
set lines 1000
exec DBMS_METADATA.SET_TRANSFORM_PARAM (DBMS_METADATA.SESSION_TRANSFORM, 'PRETTY', true);
spool c:\Rollback.sql
select dbms_metadata.GET_DDL('FUNCTION',u.object_name) || '/' c1
from user_objects u
where object_type = 'FUNCTION'
and object_name in ('FN_CALCMASTERDATA_AGE','FUNC_ASSIGNBENEFITSNONFLEX','FUNC_CHECKNEWEMPLOYEE');
select dbms_metadata.GET_DDL('PACKAGE_SPEC',u.object_name) || '/' c1
from user_objects u
where object_type = 'PACKAGE'
and object_name in('PKGT_BEN_YEAR_DETL','PKGT_BENS_TEST');
select dbms_metadata.GET_DDL('PACKAGE_BODY',u.object_name) || '/' c1
from user_objects u
where object_type = 'PACKAGE'
and object_name in ('PKGT_BEN_YEAR_DETL','PKGT_BENS_TEST','PKGT_FLEX_INITIALIZATION','PKGT_EMP');
spool off
Note: Database Oracle 10 g,
Client Machine Windows XP from where the script is ran.
Is there any limitation in amount of data that can be spooled? or is there is any better way to accomplish this task, please help.
Thanks
Saami

Answer 1

set long longer ;-)
set long 1000000 longchunksize 1000000 linesize 32000 pagesize 0