1

)当前数据库中的模式名：

select distinct object_name TABLE_SCHEMA from all_objects where object_type = 'SCH';

2

)查出各模式对应的用户：

select

SCH_OBJ.NAME   ,

SCH_OBJ.ID     ,

SCH_OBJ.CRTDATE,

USER_OBJ.NAME

from

(

select NAME, ID, PID, CRTDATE from SYS.SYSOBJECTS where TYPE$='SCH'

)

SCH_OBJ,

(

select NAME, ID from SYS.SYSOBJECTS where TYPE$='UR' and SUBTYPE$='USER'

)

USER_OBJ

where

SCH_OBJ.PID=USER_OBJ.ID

ORDER BY

SCH_OBJ.NAME

3

)查看数据库使用内存

SELECT

name                              ,--

内存池描述名称

sum(org_size)                     ,--

内存池原始大小，sum

函数：总数

sf_get_ep_seqno(rowid)            ,--rowid

数据对象编号

sum(total_size)/1024.0/1024/1024 G,--

内存池目前大小

sum(reserved_size)                ,--

内存池内已经分配掉的空间

count(         *)                          ,

avg(total_size)/1024.0/1024 --

内存池目前大小，avg

函数：平均值

FROM

V$MEM_POOL

group by

name,

sf_get_ep_seqno(rowid)

order by

4 desc;

4

)定时删除作业

call SP_CREATE_JOB('countall_bakall_delbakall',1,0,'',0,0,'',0,'

每天晚上00

点收集统计信息、全库备份、删除30

天前的全库备份文件');

call SP_JOB_CONFIG_START('countall_bakall_delbakall');

call SP_ADD_JOB_STEP('countall_bakall_delbakall', 'countall', 0, 'CALL SP_DB_STAT_INIT ();', 1, 2, 0, 0, NULL, 0);

call SP_ADD_JOB_STEP('countall_bakall_delbakall', 'bakall', 6, '01000900', 1, 2, 0, 0, NULL, 0);

call SP_ADD_JOB_STEP('countall_bakall_delbakall', 'delbakall', 0, 'sp_db_bakallset_remove_batch(null,sysdate-30);', 1, 2, 0, 0, NULL, 0);

call SP_ADD_JOB_SCHEDULE('countall_bakall_delbakall', 'countall_bakall_delbakall_time01', 1, 1, 1, 0, 0, '00:01:00', NULL, '2019-02-28 10:37:43', NULL, '');

call SP_JOB_CONFIG_COMMIT('countall_bakall_delbakall');

5

)根据表查看锁超时

select * from systexts where upper(cast(txt as varchar)) like '%MID.CUS_CREDIT%'

6

)监控表空间使用情况

select

t.name tablespace_name,

d.free_size*SF_GET_PAGE_SIZE()/1024/1024

||'M' free_space,

d.total_size*SF_GET_PAGE_SIZE()/1024/1024

||'M' total_space,

d.free_size*100/d.total_size "% FREE"

from

v$tablespace t,

v$datafile d

where

t.id=d.group_id;

select

tablespace_name       ,

file_name             ,

bytes/1024/1024||'M'  total_space,

user_bytes/1024/1024||'M'  user_space,

user_bytes*100/bytes "% FREE"

from

dba_data_files

7

)批量编译存储过程

create or replace procedure compile_invalid_procedures(

p_owner varchar2 --

所有者名称，即 SCHEMA

) as

--

编译某个用户下的无效存储过程

str_sql varchar2(200);

begin

for invalid_procedures in (select object_name from all_objects

where status = 'INVALID' and object_type = 'PROCEDURE' and owner=upper(p_owner))

loop

str_sql := 'alter procedure '||p_owner||'.'||invalid_procedures.object_name || ' compile';

begin

execute immediate str_sql;

exception

--When Others Then Null;

when OTHERS Then

dbms_output.put_line(sqlerrm);

end;

end loop;

end;

8

)清空模式下所有表数据

declare

begin

for RS in (select * from all_tables where "OWNER" in ('MID','BAS'))LOOP DECLARE

BEGIN

EXECUTE IMMEDIATE 'TRUNCATE TABLE '||RS.OWNER||'.'||RS.TABLE_NAME;

EXCEPTION WHEN OTHERS THEN

PRINT ('TRUNCATE TABLE'||RS.OWNER||'.'||RS.TABLE_NAME);

END;

end loop;

end;

9

)统计存储过程数量

select sch.name,proc.name,proc.crtdate from sysobjects sch,sysobjects proc where proc.schid=sch.id

and sch.name IN('MID','APP') AND PROC.SUBTYPE$='PROC'; and proc.CRtDATE>SYSDATE-1;

10

)已知表被锁：解锁

SELECT ID as "TABLE_ID" from SYSOBJECTS WHERE NAME = 'CITY';--

根据表名查TABLE_ID

SELECT TRX_ID,LTYPE,LMODE,TABLE_ID FROM V$LOCK WHERE TABLE_ID 1199;--

根据TABLE_ID

查TRX_ID

SELECT * FROM V$SESSIONS WHERE TRX_ID = 50702145;--

根据TRX_ID

查看SESS_ID

SP_CLOSE_SESSION(140165318846264);--

根据SESS_ID

解锁

11

)与oracle

比对表顺序

SELECT * FROM DBA_TAB_COLUMNS--

查看达梦信息

SELECT * FROM ALL_TAB_COLS --

查看ORACLE

信息

CREATE TABLE TAB_1 AS SELECT * FROM DBA_TAB_COLUMNS

CREATE TABLE TAB_2 AS SELECT * FROM ALL_TAB_COLS --ORACLE

不能导出所有列

达梦端比对

SELECT

DISTINCT

A.OWNER

,A.TABLE_NAME

FROM SYSDBA.TABLE_2 A LEFT JOIN SYSDBA.TXT_1 B

ON A.OWNER|| A.TABLE_NAME = B.OWNER|| B.TABLE_NAME AND B.COLUMN_NAME = A.COLUMN_NAME AND

B.COLUMN_ID=A.COLUMN_ID

WHERE A.OWNER='XJNX' AND B.OWNER IS NULL

ORDER BY A.TABLE_NAME

12

)执行计划缓存

CALL SP_CREATE_SYSTEM_PACKAGES(1);--

创建系统包

DBMS_STATS.GATHER_SCHEMA_STATS('SYSDBA',100,FALSE,'FOR ALL COLUMNS SIZE AUTO');

--

收集SYSDBA

模式下

所有索引的统计信息

清理执行计划缓存 CALL SP_CLEAR_PLAN_CACHE();