How to view all my views in a Database?

Question

Hi there,
could any one tell me what's the command to display each of the following:
1. all views (SYstem and the user define ones)
2. all triggers (SYstem and the user define ones)
3. all procedures, (SYstem and the user define ones)
in the database?
TY

Answer 1

If you just want a listing, you can do this:
select owner, object_type, object_name
from   dba_objects
where  object_type in ('VIEW','TRIGGER','PROCEDURE');(you don't want to see functions or packages?)
If you want to see the code for these types, an easy way is to use the package dbms_metadata to display them:
SQL> select dbms_metadata.get_ddl('TRIGGER','ORDERS_TRG','OE') from dual;
DBMS_METADATA.GET_DDL('TRIGGER','ORDERS_TRG','OE')
  CREATE OR REPLACE TRIGGER "OE"."ORDERS_TRG" INSTEAD OF INSERT
ON oc_orders FOR EACH ROW
BEGIN
   INSERT INTO ORDERS (order_id, order_mode, order_total,
                       sales_rep_id, order_status)
               VALUES (:NEW.order_id, :NEW.order_mode,
                       :NEW.order_total, :NEW.sales_rep_id,
                       :NEW.order_status);
END;
ALTER TRIGGER "OE"."ORDERS_TRG" ENABLE