PACKAGE BACKUP in ORACLE

PACKAGE BACKUP
--------------
set heading off
set echo off
set flush off
set pagesize 50000
set linesize 32767
set long 99999999
spool PACKAGE_NAME.pks
select dbms_metadata.get_ddl('PACKAGE','<PACKAGE_NAME>','<OWNER_NAME>') from dual ;
spool off;

OR

set linesize 500
set pagesize 100000
set head off
set verify off
spool PACKAGE_NAME.pks
select text from dba_source where owner='<OWNER_NAME>'and name='<PACKAGE_NAME>';
spool off

OR

select text from dba_source where owner='<OWNER_NAME>' and name='PACKAGE_NAME' and type='PACKAGE' order by line;

PACKAGE BODY BACKUP
-------------------
select dbms_metadata.get_ddl('PACKAGE_BODY','<PACKAGE_BODY_NAME>','<OWNER_NAME>') from dual ;

OR

set pagesize 0
set linesize 800
set trimspool on
set heading off
set feedback off
spool PACKAGE_BODY_NAME.pkb
select text from dba_source where owner='<OWNER_NAME>'and name='<PACKAGE_BODY_NAME>';
spool off

OR

select text from dba_source where owner='<OWNER_NAME>' and name='PACKAGE_BODY_NAME' and type='PACKAGE BODY' order by line;

DROP PACKAGE
------------
set pagesize 0
set linesize 800
col object_name for a30
col object_type for a25
col owner for a25
spool package_drop.sql
select owner,object_name,object_type from dba_objects where object_name='<object_name>';
drop package <owner>.<package_name>;
spool Off;