Server Administration :: How To Get Ddl Of View

I can desc the view,but i can not get the ddl of the view,how can i do?

SQL> desc oss03.VW_OSS_PM_MONTH_3_201112;

Name Null? Type
----------------------------------------- -------- ---------------------------

RECDATE NOT NULL NUMBER(8)
USERNUMBER NOT NULL VARCHAR2(32)
MODULEID NOT NULL NUMBER(8)
CHANNELID NOT NULL NUMBER(8)
OPERID NOT NULL NUMBER(10)
CONTENTID NOT NULL NUMBER(10)
SERVICEID NOT NULL NUMBER(10)
OPERTYPE NOT NULL NUMBER(10)
PROVCODE NOT NULL NUMBER(5)
AREACODE NOT NULL NUMBER(5)
SERVICEITEM NOT NULL VARCHAR2(20)
ORDERTYPE NOT NULL NUMBER(8)

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