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;

已选择32行。

SQL>

查看触发器 定义语句

SQL> SELECT text FROM ALL_SOURCE where TYPE='TRIGGER' AND NAME ='TRDB_TEAM';

TEXT

-----------------------------------------------------------------------------

TRIGGER "NEWCCS".trdb_team

BEFORE DELETE

ON team

REFERENCING NEW AS NEW OLD AS OLD

FOR EACH ROW

BEGIN

DELETE FROM team_teamgroup_map

WHERE teamid = :OLD.teamid;

END trdb_team;

已选择10行。

方法也比较简单，修改TYPE 和 NAME 就可以。 注意要大写。

二． 通过  DBMS_METADATA  包

Oracle 的在线文档，对这个包有详细说明：

DBMS_METADATA

http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28419/d_metada.htm#ARPLS640

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。
用法：

SQL> select dbms_metadata.get_ddl('对象类型','名称','用户名') 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"

SQL>

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);

PL/SQL 过程已成功完成。

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"

SQL> EXECUTE DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'

DEFAULT');

PL/SQL 过程已成功完成。

SQL>

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;

CREATE OR REPLACE PROCEDURE "NEWCCS"."ANALYZEDB"

IS

CURSOR get_ownertable

IS

SELECT table_name

FROM user_tables;

ownertable   get_ownertable%ROWTYPE;

BEGIN

OPEN get_ownertable;

LOOP

FETCH get_ownertable

INTO ownertable;

EXIT WHEN get_ownertable%NOTFOUND;

EXECUTE IMMEDIATE    'analyze table '

|| ownertable.table_name

|| ' compute statistics for table for all indexes for all indexed columns ';

END LOOP;

EXCEPTION

WHEN OTHERS

THEN

RAISE;

END;

其他的查询和这个类似，只需修改对象类型即可。 感兴趣的自己实验一下。

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