Oracle Database 10g中配置statspack的方法

 

首先进行一些基本的设置

1.SQL*PLUS中输入

SQL> connect sys/sys as sysdba;

SQL> alter system set job_queue_processes = 6; --自动执行数据收集时该参数需要大于0

System altered

SQL> alter system set timed_statistics = true;  

System altered

--使用statspack收集统计信息时建议将该值设置为 TRUE，否则收集的统计信息大约只能起到10%的作用

 

SQL> @C:\oracle\ora92\rdbms\admin\spcreate.sql;

输入 perfstat_password 的值:  perfstat

输入default_tablespace的值:  perfstat

输入temporary_tablespace 的值:  temp

 

NOTE:

SPCPKG complete. Please check spcpkg.lis for any errors.

--需要出现上述语句才算成功，否则请查看.lis文件并执行，进行重建

SQL> @C:\oracle\ora92\rdbms\admin\spdrop.sql

SQL> @C:\oracle\ora92\rdbms\admin\spcreate.sql;

 

2.查看文件夹会产生三个文件

C:\oracle\ora92\bin

spcpkg.lis

spctab.lis

spcusr.lis

 

3.手动执行STATSPACK收集统计信息

SQL> show user

USER为"PERFSTAT"

SQL> execute statspack.snap;

 

4.生成STATSPACK调整报告

SQL> @C:\oracle\ora92\rdbms\admin\spreport.sql;

Current Instance

~~~~~~~~~~~~~~~~

   DB Id    DB Name      Inst Num Instance

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

 357371480 COLM                1 colm

Instances in this Statspack schema

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   DB Id    Inst Num DB Name      Instance     Host

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

 357371480        1 COLM         colm         STEVENHUANG3

Using 357371480 for database Id

Using          1 for instance number

Completed Snapshots

                           Snap                    Snap

Instance     DB Name         Id   Snap Started    Level Comment

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

colm         COLM           1 11 10月 2006 21:5     5

                                0

                              2 11 10月 2006 21:5     5

                                0

Specify the Begin and End Snapshot Ids

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

输入 begin_snap 的值: 1

输入 end_snap 的值: 2

End   Snapshot Id specified: 2

Specify the Report Name

~~~~~~~~~~~~~~~~~~~~~~~

The default report file name is sp_1_2. To use this name,

press <return></return>to continue, otherwise enter an alternative.

输入 report_name 的值: report1.txt

End of Report

 

5.查看产生的report1文档

C:\oracle\ora92\bin\report1.txt

6.自动执行STATSPACK收集统计信息

SQL>@C:\oracle\ora92\rdbms\admin\spauto.sql;

Job number for automated statistics collection for this instance

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Note that this job number is needed when modifying or removing

the job:

     JOBNO

----------

         1

Job queue process

~~~~~~~~~~~~~~~~~

Below is the current setting of the job_queue_processes init.ora

parameter - the value for this parameter must be greater

than 0 to use automatic statistics gathering:

NAME_COL_PLUS_SHOW_PARAM

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

TYPE

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

VALUE_COL_PLUS_SHOW_PARAM

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

job_queue_processes

integer

6

Next scheduled run

~~~~~~~~~~~~~~~~~~

The next scheduled run for this job is:

       JOB NEXT_DATE

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

NEXT_SEC

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

         1 11-10月-06

23:00:00

spauto.sql中主要调用dbms_job.submit，默认每小时收集1次（1/24）

variable jobno number;

variable instno number;

begin

 select instance_number into :instno from v$instance;

 dbms_job.submit(:jobno,'statspack.snap;',trunc(sysdate+1/24,'HH'), 'trunc(SYSDATE+1/24,''HH'')', TRUE, :instno);

 commit;

end;

/

可以通过修改这个值设置采集时间

1/24 HH 每小时一次

1/48 MI 每半小时一次

1/144 MI 每十分钟一次

1/288 MI 每五分钟一次

7. 移除自动执行STATSPACK收集

SQL>select job,log_user,priv_user,last_date,next_date,interval from user_jobs; --先查看当前自动收集的jobs

SQL> execute dbms_job.remove('1');  --移除任务1

8．删除统计资料（statspack相关的所有系统表）

SQL>select max(snap_id) from stats$snapshot;

SQL> @C:\oracle\ora92\rdbms\admin\sptrunc.sql;

Warning

~~~~~~~

Running sptrunc.sql removes ALL data from Statspack tables. You may

wish to export the data before continuing.

About to Truncate Statspack Tables

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If you would like to continue, press <return></return>

输入 return 的值:

Entered - starting truncate operation