DBA常用SQL之DDL生成语句

获取对象定义的包为：dbms_metadata，其中的get_ddl函数是获取对象的函数

GET_DDL函数返回创建对象的原数据的DDL语句，参数说明

1、object_type 
---需要返回原数据的DDL语句的对象类型
2、name --- 对象名称
3、schema 
---对象所在的Schema，默认为当前用户所在所Schema
4、version ---对象原数据的版本
5、model 
---原数据的类型默认为ORACLE
6、transform. - XSL-T transform. to be 
applied.
7、RETURNS: 
对象的原数据默认以CLOB类型返回

其中，我们经常用到的是前三项。

dbms_metadata包中的get_ddl函数定义：

FUNCTION 
get_ddl ( object_type IN VARCHAR2,
name IN VARCHAR2,
schema IN VARCHAR2 
DEFAULT NULL,
version IN VARCHAR2 DEFAULT 'COMPATIBLE',
model IN VARCHAR2 
DEFAULT 'ORACLE',
transform. IN VARCHAR2 DEFAULT 'DDL') RETURN 
CLOB;

注意：

1、如果使用sqlplus需要进行下列格式化，特别需要对long进行设置，否则无法显示完整的SQL
2、参数要使用大写，否则会查不到

set 
linesize 180
set pages 999
set long 

1、查看数据库表的定义写法：

select 
dbms_metadata.get_ddl('TABLE','TABLENAME','USERNAME') from 
dual;

2、查看索引的SQL

select 
dbms_metadata.get_ddl('INDEX','INDEXNAME','USERNAME') from 
dual;

3、查看创建主键的SQL

SELECT 
DBMS_METADATA.GET_DDL('CONSTRAINT','CONSTRAINTNAME','USERNAME') FROM 
DUAL;

4、查看创建外键的SQL

SELECT 
DBMS_METADATA.GET_DDL('REF_CONSTRAINT','REF_CONSTRAINTNAME','USERNAME') FROM 
DUAL;

5、查看创建视图的SQL

SELECT 
DBMS_METADATA.GET_DDL('VIEW','VIEWNAME','USERNAME') FROM 
DUAL;

6、查看用户的SQL

SELECT DBMS_METADATA.GET_DDL('USER','USERNAME') 
FROM DUAL;

7、查看角色的SQL

SELECT 
DBMS_METADATA.GET_DDL('ROLE','ROLENAME') FROM 
DUAL;

8、查看表空间的SQL

SELECT 
DBMS_METADATA.GET_DDL('TABLESPACE','TABLESPACENAME') FROM 
DUAL;

9、获取物化视图SQL

select dbms_metadata.get_ddl('MATERIALIZED 
VIEW','MVNAME') FROM DUAL;

10、获取远程连接定义SQL

SELECT 
dbms_metadata.get_ddl('DB_LINK','DBLINKNAME','USERNAME') stmt FROM 
dual

11、获取用户下的触发器SQL

select 
DBMS_METADATA.GET_DDL('TRIGGER','TRIGGERNAME','USERNAME) FROM 
DUAL;

或

SELECT l.owner,
       l.db_link,
       l.username,
       dbms_metadata.get_ddl('DB_LINK', l.db_link, l.owner) stmt
  FROM  dba_db_links l



12、获取用户下的序列

select 
DBMS_METADATA.GET_DDL('SEQUENCE','SEQUENCENAME') from 
DUAL;

13、获取用户下的函数

select 
DBMS_METADATA.GET_DDL('FUNCTION','FUNCTIONNAME','USERNAME') from 
DUAL

14、获取包的定义

select 
DBMS_METADATA.GET_DDL('PACKAGE','PACKAGENAME','USERNAME') from 
dual

15、获取存储过程

select 
DBMS_METADATA.GET_DDL('PROCEDURE','PROCEDURENAME','USERNAME') from 
dual

16、获取包体定义

select DBMS_METADATA.GET_DDL('PACKAGE 
BODY','PACKAGEBODYNAME','USERNAME') from 
dual

17、获取远程数据库对象的定义

SELECT 
DBMS_LOB.SUBSTR@dblinkname(DBMS_METADATA.GET_DDL@dblinkname('TABLE', 
'TABLENAME', 'USERNAME')) FROM DUAL@dblinkname

18、获取多个对象的定义

SELECT 
DBMS_METADATA.GET_DDL(O.OBJECT_TYPE, O.object_name,O.OWNER)
FROM DBA_OBJECTS 
O
where O.OBJECT_TYPE IN ('TABLE','INDEX','PROCEDURE','FUNCTION') and ONWER = 
'ONWERNAME';

DDL生成对象创建语句

select 
j.SCHEMA_USER,
'declare ' ||
'  n_syn_points number; '||
' begin '||
'  dbms_job.submit(n_syn_points,'||
''''||j.what||''''||','||
   ' sysdate,'||
''''||j.interval||''''||');'||
'  commit; '||
' end; ' as ss
 from dba_jobs j 
where j.LOG_USER not in ('SYS')
and j.SCHEMA_USER='ZHAOPIN'
;

select 'exec dbms_job.remove(' || job || ');' as ss,s.*
  from dba_jobs s
 where s.log_user = 'LCC'

DDL生成创建Job或删除Job语句

---查询表空间
select a.tablespace_name,a.bytes/1024/1024 "Sum MB",(a.bytes-b.bytes)/1024/1024 "used MB",b.bytes/1024/1024 "free MB",
round(((a.bytes-b.bytes)/a.bytes)*100,2) "percent_used"
from
(select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name) a,
(select tablespace_name,sum(bytes) bytes,max(bytes) largest from dba_free_space group by tablespace_name) b
where a.tablespace_name=b.tablespace_name
order by ((a.bytes-b.bytes)/a.bytes) desc;

---生成添加数据文件SQL
select 'ALTER TABLESPACE '||f.tablespace_name||' ADD DATAFILE ' ||''''||f.FILE_NAME ||''''||' SIZE 10G;'  stras,f.*
from dba_data_files f
where f.TABLESPACE_NAME='SMARTDATA_HISTORY'
;

DDL生成表空间添加文件SQL

select 'drop TYPE '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='TYPE'
 order by o.created desc
 ;

01_DDL_DROP_TYPE

select 'drop view ' ||o.owner||'.'||o.object_name||';'||chr(13)||chr(10) 
 from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='VIEW'
 order by o.created desc
 ;

02_DDL_DROP_VIEW

select 'drop sequence '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='SEQUENCE'
 order by o.created desc
 ;

03_DDL_DROP_SEQUENCE

select 'drop TRIGGER '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='TRIGGER'
 order by o.created desc
 ;

04_DDL_DROP_TRIGGER

select 'drop MATERIALIZED VIEW '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='MATERIALIZED VIEW'
 order by o.created desc
 ;

05_DDL_DROP_MATERIALIZED_VIEW

select 'drop FUNCTION '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='FUNCTION'
 order by o.created desc
 ;

06_DDL_DROP_FUNCTION

select 'drop PROCEDURE '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='PROCEDURE'
 order by o.created desc
 ;
 

07_DDL_DROP_PROCEDURE

select 'drop PACKAGE '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10) 
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='PACKAGE'
 order by o.created desc
 ;

08_DDL_DROP_PACKAGE

select 'drop PACKAGE BODY '||o.owner||'.'||o.object_name ||';'||chr(13)||chr(10)
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='PACKAGE BODY'
 order by o.created desc
 ;

09_DDL_DROP_PACKAGE_BODY

select 'drop table '||o.owner||'.'||o.object_name ||' cascade constraints ;'
  from dba_objects o
 where o.owner in 
 ('HRONLINE',
 'ETS',
 'LHC',
 'BACKUPUSER',
 'CAREER_DMOLVIEW',
 'ASSEREAD',
 'NORMREAD',
 'ASSE',
 'ZHAOPIN',
 'CAREER',
 'PERFSTAT',
 'INTERNCAREER',
 'HNCAREER',
 'HOLONLINE',
 'ZTECAREER'
 )
 and o.object_type='TABLE'
 order by o.created desc
 ;

10_DDL_DROP_TABLE

select 'execute dbms_job.remove('||j.JOB||');' as removejob from dba_jobs j
where instr(j.LOG_USER,'SYS')<=0
;