Oracle查看表, 存储过程, 触发器, 函数, 等对象定义语句

有时候，我们想查看表，存储，触发器等对象的定语语句，有以下两种方法：

1. 查 all_source 表

2. 用 DBMS_METADATA 包。

一． 通过 all_source 表
先来确认下，通过all_source 表可以查看哪些类型的对象：
SQL> SELECT distinct type FROM ALL_SOURCE;
TYPE
------------
PROCEDURE
PACKAGE
PACKAGE BODY
LIBRARY
TYPE BODY
TRIGGER
FUNCTION
JAVA SOURCE
TYPE

从以上的结果我们可以看到，我们可以通过该表查询的对象.
查看存储过程定义语句：
SQL> SELECT text FROM ALL_SOURCE where TYPE='PROCEDURE' AND NAME ='ADDCUSTBUSS';
TEXT
--------------------------------------------------------------------------------
PROCEDURE addcustbuss (
   acustid       IN       custbuss.custid%TYPE,
   bussname      IN       custbuss.businessname%TYPE,
   aopid         IN       custbuss.opid%TYPE,
   acreatetime   IN       custbuss.createtime%TYPE,
   aCustTel      IN       custbuss.CustTel%TYPE,--客户电话
   aContact      IN       custbuss.Contact%TYPE,--联系人
   aFeedback     IN       custbuss.Feedback%TYPE,--客户反馈
   asid          OUT      custbuss.ID%TYPE,
   RESULT        OUT      INTEGER
)
IS
BEGIN
   RESULT := -1;
   SELECT getarea || TO_CHAR (idseq.NEXTVAL, 'FM0999999999')
     INTO asid
     FROM DUAL;
   INSERT INTO custbuss
               (ID, custid, businessname, opid, createtime,CustTel,Contact,Feedback  
        )
        VALUES (asid, acustid, bussname, aopid, acreatetime,aCustTel,aContact,aFeedback
               );
   RESULT := 0;
EXCEPTION
   WHEN OTHERS
   THEN
      RESULT := -1;
END addcustbuss;

查看触发器 定义语句
SQL> SELECT text FROM ALL_SOURCE where TYPE='TRIGGER' AND NAME ='TRDB_TEAM';

二．通过 DBMS_METADATA 包

Oracle 的在线文档，对这个包有详细说明：

通过该dbms_metadata 包的get_ddl（）方法，我们可以查看表，索引，视图，存储过程等的定义语句。

SQL> select dbms_metadata.get_ddl('object_type','name','user_name') from dual;

1. 查看表的定义语句

SQL> set long 9999999
SQL> select dbms_metadata.get_ddl('TABLE','BBS','NEWCCS') from dual;
DBMS_METADATA.GET_DDL('TABLE','BBS','NEWCCS')
--------------------------------------------------------------------------------
  CREATE TABLE "NEWCCS"."BBS"
   (    "BBSID" NUMBER(16,0),
        "SENDER" VARCHAR2(20) NOT NULL ENABLE,
        "INCEPT" VARCHAR2(20) NOT NULL ENABLE,
        "MSGTITLE" VARCHAR2(40) NOT NULL ENABLE,
        "MSG" VARCHAR2(500),
        "SENDTIME" DATE DEFAULT sysdate NOT NULL ENABLE,
        "MSGTOP" VARCHAR2(1) DEFAULT 0,
        "MSGFILENAME" VARCHAR2(100),
        "MSGFILE" LONG RAW,
        "EDITTIME" DATE DEFAULT sysdate,
         CONSTRAINT "PK_BBS" PRIMARY KEY ("BBSID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE 
DEFAULT CELL_FLASH_CACHE DEFAULT)   TABLESPACE "NEWCCS"  ENABLE
   ) SEGMENT CREATION IMMEDIATE
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE 
DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "NEWCCS"

从上面的查询可以看到，返回的结果里面含有一些storage 属性，看起来很不舒服。我们可以通过设置会话级别来不显示这些storage 属性。

Example: Fetch the DDL for all Complete Tables in the Current Schema, Filter Out Nested Tables and Overflow Segments

This example fetches the DDL for all "complete" tables in the current schema, filtering out nested tables and overflow segments. The example uses SET_TRANSFORM_PARAM (with the handle value = DBMS_METADATA.SESSION_TRANSFORM meaning "for the current session") to specify that storage clauses are not to be returned in the SQL DDL. Afterwards, the example resets the session-level parameters to their defaults.

To generate complete, uninterrupted output, set the PAGESIZE to 0 and set LONG to some large number, as shown, before executing your query.

SQL> SET LONG 2000000
SQL> SET PAGESIZE 0
SQL> EXECUTE DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'STORAGE',false);

SQL> select dbms_metadata.get_ddl('TABLE','BBS','NEWCCS') from dual;
  CREATE TABLE "NEWCCS"."BBS"
   (    "BBSID" NUMBER(16,0),
        "SENDER" VARCHAR2(20) NOT NULL ENABLE,
        "INCEPT" VARCHAR2(20) NOT NULL ENABLE,
        "MSGTITLE" VARCHAR2(40) NOT NULL ENABLE,
        "MSG" VARCHAR2(500),
        "SENDTIME" DATE DEFAULT sysdate NOT NULL ENABLE,
        "MSGTOP" VARCHAR2(1) DEFAULT 0,
        "MSGFILENAME" VARCHAR2(100),
        "MSGFILE" LONG RAW,
        "EDITTIME" DATE DEFAULT sysdate,
         CONSTRAINT "PK_BBS" PRIMARY KEY ("BBSID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  TABLESPACE "NEWCCS"  ENABLE
   ) SEGMENT CREATION IMMEDIATE
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  TABLESPACE "NEWCCS"

DEFAULT:
SQL> EXECUTE DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'DEFAULT');

2. 查看 存储过程 的定义语句
SQL> SET LONG 9999
SQL> select dbms_metadata.get_ddl('PROCEDURE','ANALYZEDB','NEWCCS') from dual;
SQL> select dbms_metadata.get_ddl('INDEX','IDX_ENAME','SCOTT') from dual;