set line 200
set pagesize 0
set long 99999
set feedback off
set echo off

select dbms_metadata.get_ddl('TABLE','TABLE_NamE','TABLE_OWNER') From dual;
select dbms_metadata.get_ddl('INDEX','INDEX_NAME','INDEX_OWNER') from dual;
select dbms_metadata.get_ddl('VIEW','VIEW_NAME','VIEW_OWNER') from dual;
select dbms_metadata.get_ddl('PROCEDURE','PROCEDURE_NAME','PROCEDURE_OWNER') from dual;
select dbms_metadata.get_ddl('FUNCTION','FUNCTION_NAME','FUNCTION_OWNER') from dual;

set pagesize 0
set long 90000
set feedback off
set echo off
spool schema_ddl.sql
SELECT DBMS_METADATA.GET_DDL('TABLE',u.table_name,u.owner) FROM DBA_TABLES u;
SELECT DBMS_METADATA.GET_DDL('VIEW',u.view_name,u.owner) FROM DBA_VIEWS u;
SELECT DBMS_METADATA.GET_DDL('INDEX',u.index_name,u.owner) FROM DBA_INDEXES u;
select dbms_metadata.get_ddl('PROCEDURE',u.object_name, u.owner,) from dba_objects u where u.object_tyPE = 'PROCEDURE';
select dbms_metadata.get_ddl('FUNCTION',u.object_name, u.owner,) from dba_objects u where u.object_type = 'FUNCTION';
spool off;

select dbms_metadata.get_ddl('TABLESPACE','TBS_NAME') from dual;

SELECT DBMS_METADATA.GET_DDL('TABLESPACE', TS.tablespace_name)
FROM DBA_TABLESPACES TS;

select dbms_metadata.get_ddl('USER','EPAY_USER') from dual;

SELECT DBMS_METADATA.GET_DDL('USER',U.username)
FROM DBA_USERS U;