#查看对像创建语句 (适合于 'VIEW','CLUSTER','INDEX')

set long 1000000;
select dbms_metadata.get_ddl('TABLE','T_SM_COMMU_COMMU_USER','WSD') from dual;

#获得动态视图的定义
 select view_definition from v_$fixed_view_definition where view_name='V$DATAFILE';

#获取存储过程,包,函数定义
dba_source