【效能優化】Oracle 部署 Statspack並生成報告

Oracle 部署 Statspack

[實驗環境]
作業系統 RedHat 5.5
主機名 lxh
資料庫版本 Oracle 10.2.0
字符集 GHS16GBK
生產庫例項名 prod

[實驗過程]
1.部署statspack

1.1、建立一個專門用於statspack的表空間statspack

SYS@ prod>create tablespace statspack datafile '/u01/app/oracle/oradata/prod/statspack01.dbf' size 300m;

1.2、以sysdba身份執行建立prefstat物件的指令碼
SYS@ prod>@?/rdbms/admin/spcreate.sql
Choose the PERFSTAT user's password
-----------------------------------
Not specifying a password will result in the installation FAILING

Enter value for perfstat_password:oracle
oracle
Choose the Default tablespace for the PERFSTAT user
---------------------------------------------------
Below is the list of online tablespaces in this database which can
store user data. Specifying the SYSTEM tablespace for the user's
default tablespace will result in the installation FAILING, as
using SYSTEM for performance data is not supported.
Choose the PERFSTAT users's default tablespace. This is the tablespace
in which the STATSPACK tables and indexes will be created.
TABLESPACE_NAME CONTENTS STATSPACK DEFAULT TABLESPACE
------------------------------ --------- ----------------------------
EXAMPLE PERMANENT
STATSPACK PERMANENT
SYSAUX PERMANENT *
TBS1 PERMANENT
TEST3 PERMANENT
USERS PERMANENT

Pressing will result in STATSPACK's recommended default
tablespace (identified by *) being used.

Enter value for default_tablespace:statspack
Using tablespace STATSPACK as PERFSTAT default tablespace.
Choose the Temporary tablespace for the PERFSTAT user
-----------------------------------------------------
Below is the list of online tablespaces in this database which can
store temporary data (e.g. for sort workareas). Specifying the SYSTEM
tablespace for the user's temporary tablespace will result in the
installation FAILING, as using SYSTEM for workareas is not supported.
Choose the PERFSTAT user's Temporary tablespace.
TABLESPACE_NAME CONTENTS DB DEFAULT TEMP TABLESPACE
------------------------------ --------- --------------------------
TEMP TEMPORARY *
Pressing will result in the database's default Temporary
tablespace (identified by *) being used.
Enter value for temporary_tablespace:回車
… …
NOTE:
SPCPKG complete. Please check spcpkg.lis for any errors.
PERFSTAT@ prod>

Statstack安裝完成。

1.3、設定statspack自動產生快照的間隔時間為15分鐘

[oracle@James ~]$vi /u01/app/oracle/product/10.2.0/db_1/rdbms/admin/spauto.sql
variable jobno number;
variable instno number;
begin
select instance_number into :instno from v$instance;
dbms_job.submit(:jobno, 'statspack.snap;',trunc(sysdate+1/96,'MI'), 'trunc(SYSDATE+1/96,''MI'')', TRUE, :instno);
commit;
end;
/
1.4、設定快照的預設級別為7級

SYS@ prod>exec statspack.modify_statspack_parameter(i_snap_level=>7);

2.產生statspack報告

2.1、啟動statspack的自動快照

SCOTT@ prod>conn perfstat/oracle
PERFSTAT@ prod>@?/rdbms/admin/spauto

2.2、驗證statspack自動生成的報告

PERFSTAT@prod>alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
PERFSTAT@prod>select snap_id,snap_time,snap_level from stats$snapshot order by snap_time;

SNAP_ID SNAP_TIME SNAP_LEVEL
---------- ------------------- ----------
1 2014-08-25 17:52:02 7
2 2014-08-25 19:05:03 7
3 2014-08-25 19:20:04 7
4 2014-08-25 19:35:05 7
5 2014-08-25 19:50:05 7
6 2014-08-25 20:05:01 7

2.3、生成statspack分析報告
SQL>@?/rdbms/admin/spreport

Current Instance
~~~~~~~~~~~~~~~~
DB Id DB Name Inst Num Instance
----------- ------------ -------- ------------
199802235 PROD 1 prod
Instances in this Statspack schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DB Id Inst Num DB Name Instance Host
----------- -------- ------------ ------------ ------------
199802235 1 PROD prod lxh

Using 199802235 for database Id
Using 1 for instance number
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Entering the number of days (n) will result in the most recent
(n) days of snapshots being listed. Pressing without
specifying a number lists all completed snapshots.
Listing all Completed Snapshots
Snap
Instance DB Name Snap Id Snap Started Level Comment
------------ ------------ --------- ----------------- ----- --------------------
prod PROD 1 25 Aug 2014 17:52 7

2 25 Aug 2014 19:05 7
3 25 Aug 2014 19:20 7
4 25 Aug 2014 19:35 7
5 25 Aug 2014 19:50 7
6 25 Aug 2014 20:05 7
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap:2
Enter value for end_snap: 3
Enter value for report_name:

@?/rdbms/admin/spreport

Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 3
Enter value for end_snap: 4
Enter value for report_name:

Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 4
Enter value for end_snap: 5
Enter value for report_name:

Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 5
Enter value for end_snap: 6
Enter value for report_name:

2.4、取消statspack自動生成快照
檢視job ID
PERFSTAT@ prod>select job,log_user,last_date,next_date from user_jobs;

JOB LOG_USER LAST_DATE NEXT_DATE
---------- ------------------------------ ------------------- -------------------
22 PERFSTAT 2014-08-25 20:05:01 2014-08-25 20:20:00

PERFSTAT@ prod>exec dbms_job.remove('22');

呂星昊
2014.9.10

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/29475508/viewspace-1267304/，如需轉載，請註明出處，否則將追究法律責任。

【效能優化】Oracle 部署 Statspack並生成報告

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