禁用sga自动管理机制，分配比较小的数据缓冲区(30m)和共享池(70m)空间
1.1关闭SGA自动管理机制
查看是否开启了ASSM
idle>show parameter sga;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 804M
sga_target big integer 500M
关闭sga自动管理机制：(部分参数重启数据库生效)
sys@TESTDB12>alter system set memory_target=0;
idle>alter system set sga_target=0;
idle>show parameter memory;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
hi_shared_memory_address integer 0
memory_max_target big integer 804M
memory_target big integer 0
shared_memory_address integer 0
idle>show parameter sga;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 804M
sga_target big integer 0
1.2设置数据缓冲区的大小为30m
idle>alter system set db_cache_size=30m;
System altered.
1.3 设置共享池的大小为70m
idle>alter system set shared_pool_size=70m scope=spfile;
System altered.
1.4 验证设置好的数据缓冲区和共享池的大小
idle>show parameter db_cache_size;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_cache_size big integer 32M
idle>show parameter shared_pool_size;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
shared_pool_size big integer 72M
sys@TESTDB12>select component,current_size/1024/1024 from v$sga_dynamic_components;
COMPONENT CURRENT_SIZE/1024/1024
---------------------------------------------------------------- ----------------------
shared pool 80
large pool 4
java pool 4
streams pool 4
DEFAULT buffer cache 24
KEEP buffer cache 0
RECYCLE buffer cache 0
DEFAULT 2K buffer cache 0
DEFAULT 4K buffer cache 0
DEFAULT 8K buffer cache 0
DEFAULT 16K buffer cache 0
DEFAULT 32K buffer cache 0
Shared IO Pool 0
ASM Buffer Cache 0
14 rows selected.
2.部署statspack
2.1创建一个专门用于statspack的表空间tools
idle>create tablespace tools
2 datafile '/u01/app/oracle/oradata/TestDB12/tools01.dbf'
3 size 300m;
Tablespace created.
2.2以sysdba身份执行创建prefstat对象的脚本
SQL> @?/rdbms/admin/spcreate.sql /sppurge.sql是删除快照
Choose the PERFSTAT user's password
-----------------------------------
Not specifying a password will result in the installation FAILING
Enter value for perfstat_password: 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
SYSAUX PERMANENT *
TOOLS PERMANENT
USERS PERMANENT
Pressing <return> will result in STATSPACK's recommended default
tablespace (identified by *) being used.
Enter value for default_tablespace: tools
Using tablespace TOOLS 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 <return> will result in the database's default Temporary
tablespace (identified by *) being used.
Enter value for temporary_tablespace:回车
… …
NOTE:
SPCPKG complete. Please check spcpkg.lis for any errors.
Statstack安装完成。
2.3设置statspack自动产生快照的间隔时间为15分钟（一天有24小时96个15分钟）
{oracle@Redhat55.cuug.net:/u01/app/oracle/product/11.2.0/dbhome_1/rdbms/admin}$ vi /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/admin/spauto.sql
variable jobno number;
variable instno number;
begin
select instance_number into :instno from v$instance;
dbms_job.submit(:jobno, 'statspack.snap;', trunc(sysdate+1/96,'MI'), 'trunc(SYSDATE+1/96,''MI'')', TRUE, :instno);
commit;
end;
2.4设置快照的默认级别为7级
perfstat@TESTDB12>exec statspack.modify_statspack_parameter(i_snap_level=>7);
PL/SQL procedure successfully completed.
创建序列
sys@TESTDB12>alter user scott identified by tiger;
User altered.
sys@TESTDB12>conn scott/tiger;
Connected.
scott@TESTDB12>CREATE SEQUENCE emp2_empno
2 INCREMENT BY 1
3 START WITH 1
4 MAXVALUE 100000000
5 CACHE 10000
6 NOCYCLE;
Sequence created.
3搭建查询环境
3.1创建新表并插入数据
scott@TESTDB12>create table emp2 as select * from emp where 1=2;
Table created.
scott@TESTDB12>alter table emp2 modify empno number(10);
Table altered.
scott@TESTDB12>alter table emp2 modify ename varchar(30);
Table altered.
将emp2 表设为nologging
scott@TESTDB12>alter table emp2 nologging;
Table altered.
插入2千万行数据：
scott@TESTDB12>begin
2 for i in 1..20000000 loop
3 insert into emp2
4 values (emp2_empno.nextval,'cuug'||i,'SALESMAN',7698,sysdate,1600,300,30);
5 if mod(i,1000)=0 then
6 commit;
7 end if;
8 end loop;
9 commit;
10 end;
11 /
3.2编写查询业务脚本
{oracle@Redhat55.cuug.net:/home/oracle}$ mkdir -p script/bin/
{oracle@Redhat55.cuug.net:/home/oracle/script/bin}$ vi script/bin/share_pool_sql_1.sh
#!/bin/bash
CNT=1
while [ $CNT -lt 20000000 ]
do
sqlplus scott/tiger <<EOF
select * from emp2 where empno=$CNT;
exit
EOF
CNT=`expr $CNT + 1`
done
4.运行查询业务脚本并产生statspack报告
4.1运行查询业务脚本并启动statspack的自动快照
{oracle@Redhat55.cuug.net:/home/oracle/script/bin}$ sh share_pool_sql_1.sh
sys@TESTDB12>conn perfstat/oracle
Connected.
perfstat@TESTDB12>@?/rdbms/admin/spauto
----------------------------------------------华丽的分割线----------------------------------------------------------------------------------
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem $Header: spauto.sql 16-feb-00.16:49:37 cdialeri Exp $
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem spauto.sql
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem Copyright (c) Oracle Corporation 1999, 2000. All Rights Reserved.
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem NAME
perfstat@TESTDB12>Rem spauto.sql
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem DESCRIPTION
perfstat@TESTDB12>Rem SQL*PLUS command file to automate the collection of STATPACK
perfstat@TESTDB12>Rem statistics.
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem NOTES
perfstat@TESTDB12>Rem Should be run as the STATSPACK owner, PERFSTAT.
perfstat@TESTDB12>Rem Requires job_queue_processes init.ora parameter to be
perfstat@TESTDB12>Rem set to a number >0 before automatic statistics gathering
perfstat@TESTDB12>Rem will run.
perfstat@TESTDB12>Rem
perfstat@TESTDB12>Rem MODIFIED (MM/DD/YY)
perfstat@TESTDB12>Rem cdialeri 02/16/00 - 1191805
perfstat@TESTDB12>Rem cdialeri 12/06/99 - 1059172, 1103031
perfstat@TESTDB12>Rem cdialeri 08/13/99 - Created
perfstat@TESTDB12>Rem
perfstat@TESTDB12>
perfstat@TESTDB12>
perfstat@TESTDB12>spool spauto.lis
perfstat@TESTDB12>
perfstat@TESTDB12>--
perfstat@TESTDB12>-- Schedule a snapshot to be run on this instance every hour, on the hour
perfstat@TESTDB12>
perfstat@TESTDB12>variable jobno number;
perfstat@TESTDB12>variable instno number;
perfstat@TESTDB12>begin
2 select instance_number into :instno from v$instance;
3 dbms_job.submit(:jobno, 'statspack.snap;', trunc(sysdate+1/96,'MI'), 'trunc(SYSDATE+1/96,''MI'')', TRUE, :instno);
4 commit;
5 end;
6 /
PL/SQL procedure successfully completed.
perfstat@TESTDB12>
perfstat@TESTDB12>
perfstat@TESTDB12>prompt
perfstat@TESTDB12>prompt Job number for automated statistics collection for this instance
Job number for automated statistics collection for this instance
perfstat@TESTDB12>prompt ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
perfstat@TESTDB12>prompt Note that this job number is needed when modifying or removing
Note that this job number is needed when modifying or removing
perfstat@TESTDB12>prompt the job:
the job:
perfstat@TESTDB12>print jobno
JOBNO
----------
23
perfstat@TESTDB12>
perfstat@TESTDB12>prompt
perfstat@TESTDB12>prompt Job queue process
Job queue process
perfstat@TESTDB12>prompt ~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~
perfstat@TESTDB12>prompt Below is the current setting of the job_queue_processes init.ora
Below is the current setting of the job_queue_processes init.ora
perfstat@TESTDB12>prompt parameter - the value for this parameter must be greater
parameter - the value for this parameter must be greater
perfstat@TESTDB12>prompt than 0 to use automatic statistics gathering:
than 0 to use automatic statistics gathering:
perfstat@TESTDB12>show parameter job_queue_processes
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
job_queue_processes integer 1000
perfstat@TESTDB12>prompt
perfstat@TESTDB12>
perfstat@TESTDB12>prompt
perfstat@TESTDB12>prompt Next scheduled run
Next scheduled run
perfstat@TESTDB12>prompt ~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~
perfstat@TESTDB12>prompt The next scheduled run for this job is:
The next scheduled run for this job is:
perfstat@TESTDB12>select job, next_date, next_sec
2 from user_jobs
3 where job = :jobno;
JOB NEXT_DATE NEXT_SEC
---------- --------- --------------------------------
23 28-JUL-14 04:31:00
1 row selected.
----------------------------------------------华丽的分割线----------------------------------------------------------------------------------
4.2验证statspack自动生成的报告
perfstat@TESTDB12>alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
perfstat@TESTDB12>select snap_id,snap_time,snap_level from stats$snapshot order by snap_time;
SNAP_ID SNAP_TIME SNAP_LEVEL
---------- ------------------- ----------
1 2014-07-28 23:07:05 7
11 2014-07-28 04:46:00 7
12 2014-07-28 05:01:04 7
13 2014-07-28 05:16:02 7
14 2014-07-28 05:31:04 7
生成statspack分析报告
SQL> @?/rdbms/admin/spreport
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap:21
Enter value for end_snap: 31
Enter value for report_name:
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 31
Enter value for end_snap: 32
Enter value for report_name:
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 32
Enter value for end_snap: 33
Enter value for report_name:
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 33
Enter value for end_snap: 34
Enter value for report_name:
4.3取消statspack自动生成快照
perfstat@TESTDB12>select job,log_user,last_date,next_date from user_jobs;
JOB LOG_USER LAST_DATE
---------- ------------------------------ -------------------
NEXT_DATE
-------------------
23 PERFSTAT 2014-07-28 05:31:04
2014-07-28 05:46:00
perfstat@TESTDB12>exec dbms_job.remove('23');
5.启samba共享并对生成的statspack报告copy到windows主机
[root@James ~]# service smb start //启动samba服务
[root@James ~]# chkconfig smb on //开机自动启动
{root@Redhat55.cuug.net:/root}# smbpasswd -a oracle //将系统oracle用户添加到samba服务
