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SQL Monitor Report

1.SQL Monitor简介

在Oracle Database 11g中,系统自动监控符合以下条件的SQL,并收集执行时的细节信息:
1)采用并行方式执行

2)单次执行消耗的CPU或IO超过5秒

3)通过使用/* +MONITOR*/ HINT的语句

系统收集的SQL信息会存储在V$SQL_MONITOR、V$SQL_PLAN_MONITOR视图中

2.SQL Monitor 参数设置

STATISTICS_LEVEL设置为:'TYPICAL'(缺省)或者 'ALL'

CONTROL_MANAGEMENT_PACK_ACCESS设置为:'DIAGNOSTIC+TUNING'

3.SQL Monitor report获取方法

SQL Monitoring可以采用以下3种方式展现:

1)EM:Performance ——>右下角的SQL Monitoring ——>Monitored SQL Executions

2)SQL Developer:Tools ——>MonitorSQL

3)DBMS_SQLTUNE包 ——>DBMS_SQLTUNE.report_sql_monitor

其报告格式有:'TEXT','HTML','XML' ,'ACTIVE',其中'ACTIVE'只在11g R2以后才支持,使用HTML和Flash的方式显示动态的报告,需要从oracle官网读取相关联的Javascript和Flash。

备注:

如果不能连到Internet又想看ACTIVEReport可以下载相关的库文件到本地的HTTP服务器上,然后用BASE_PATH来制定库文件的位置。

在本地HTTP服务器上创建目录,然后下载下面的文件:

mkdir -p/var/www/html/sqlmon

cd/var/www/html/sqlmon

wget--mirror --no-host-directories --cut-dirs=1http://download.oracle.com/otn_software/emviewers/scripts/flashver.js

wget--mirror --no-host-directories --cut-dirs=1 http://download.oracle.com/otn_software/emviewers/scripts/loadswf.js

wget--mirror --no-host-directories --cut-dirs=1http://download.oracle.com/otn_software/emviewers/scripts/document.js

wget--mirror --no-host-directories --cut-dirs=1 http://download.oracle.com/otn_software/emviewers/sqlmonitor/11/sqlmonitor.swf

在调用函数时加上参数,比如:base_path=> 'http://ipaddr/sqlmon'

4. SQL Monitor report生成实例

语法:

DBMS_SQLTUNE.REPORT_SQL_MONITOR()

FUNCTIONREPORT_SQL_MONITOR RETURNS CLOB

Argument Name Type In/Out Default?

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

SQL_ID VARCHAR2 IN DEFAULT

SESSION_ID NUMBER IN DEFAULT

SESSION_SERIAL NUMBER IN DEFAULT

SQL_EXEC_START DATE IN DEFAULT

SQL_EXEC_ID NUMBER IN DEFAULT

INST_ID NUMBER IN DEFAULT

START_TIME_FILTER DATE IN DEFAULT

END_TIME_FILTER DATE IN DEFAULT

INSTANCE_ID_FILTER NUMBER IN DEFAULT

PARALLEL_FILTER VARCHAR2 IN DEFAULT

PLAN_LINE_FILTER NUMBER IN DEFAULT

EVENT_DETAIL VARCHAR2 IN DEFAULT

BUCKET_MAX_COUNT NUMBER IN DEFAULT

BUCKET_INTERVAL NUMBER IN DEFAULT

BASE_PATH VARCHAR2 IN DEFAULT

LAST_REFRESH_TIME DATE IN DEFAULT

REPORT_LEVEL VARCHAR2 IN DEFAULT

TYPE VARCHAR2 IN DEFAULT

SQL_PLAN_HASH_VALUE NUMBER IN DEFAULT

4.1Text文本格式

1) Sqlplus 参数设置查看


showparameter statistics_level;

NAME TYPE VALUE

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

statistics_level string TYPICAL


showparameter CONTROL_MANAGEMENT_PACK_ACCESS;

NAME TYPE VALUE

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

control_management_pack_access string DIAGNOSTIC+TUNING

2) 执行模拟SQL

[oracle@node4 sqlmonitor]$ sqlplus -S/nolog

conn /as sysdba;

select /* +moniotr*/* fromscott.dept where deptno<=30;

DEPTNODNAME LOC

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

10 ACCOUNTING NEW YORK

20 RESEARCH DALLAS

30 SALES CHICAGO

3) 从v$sql_monitor获取模拟SQL信息

col sql_text for a60;

set line 200;

set pagesize 20000;

select sql_id,sql_text fromv$sql_monitor where sql_text like '%scott.dept%';

SQL_ID SQL_TEXT

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

74qqqwntwzxb1 select /*+ Monitor*/* from scott.dept where deptno=10

4) 生成text类型报告

SET LONG 1000000

SET LONGCHUNKSIZE 1000000

SET LINESIZE 1000

SET PAGESIZE 0

SET TRIM ON

SET TRIMSPOOL ON

SET ECHO OFF

SET FEEDBACK OFF

spool report_sql_monitor_text.txt

SELECT DBMS_SQLTUNE.REPORT_SQL_MONITOR(

SQL_ID =>'74qqqwntwzxb1',

TYPE => 'TEXT',

REPORT_LEVEL => 'ALL') AS REPORT

FROM dual;

spool off

5) 展示报告内容

4.2HTML格式

1)生成HTML类型报告

SET LONG 1000000

SET LONGCHUNKSIZE 1000000

SET LINESIZE 1000

SET PAGESIZE 0

SET TRIM ON

SET TRIMSPOOL ON

SET ECHO OFF

SET FEEDBACK OFF

spool report_sql_monitor_html.html

SELECT DBMS_SQLTUNE.REPORT_SQL_MONITOR(

SQL_ID =>'74qqqwntwzxb1',

TYPE => 'HTML',

REPORT_LEVEL => 'ALL') AS REPORT

FROM dual;

spool off

2)html类型报告展示


4.3Active格式

如不能联网,需要下载相应的flash组件、脚本,详细见SQL Monitor report获取方法

1)active类型报告生成

SET LONG 1000000

SET LONGCHUNKSIZE 1000000

SET LINESIZE 1000

SET PAGESIZE 0

SET TRIM ON

SET TRIMSPOOL ON

SET ECHO OFF

SET FEEDBACK OFF

spool report_sql_monitor_active.html

SELECT DBMS_SQLTUNE.REPORT_SQL_MONITOR(

SQL_ID => '74qqqwntwzxb1',

TYPE => 'ACTIVE',

REPORT_LEVEL => 'ALL',

BASE_PATH =>'http://ipaddr/sqlmon') AS report

FROM dual;

spool off

2)active类型报告展示

可以通过启动http服务,将文件放置在发布目录下,通过http://ipaddr/sqlmon/report_sql_monitor_active.html形式查看(需下载相应的脚本和组件)


或者拿到windows本地查看


5. SQL Monitor report其他方法使用

1)DBMS_SQLTUNE.REPORT_SQL_MONITOR_LIST


FUNCTION REPORT_SQL_MONITOR_LIST RETURNS CLOB
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SQL_ID VARCHAR2 IN DEFAULT
SESSION_ID NUMBER IN DEFAULT
SESSION_SERIAL NUMBER IN DEFAULT
INST_ID NUMBER IN DEFAULT
ACTIVE_SINCE_DATE DATE IN DEFAULT
ACTIVE_SINCE_SEC NUMBER IN DEFAULT
LAST_REFRESH_TIME DATE IN DEFAULT
REPORT_LEVEL VARCHAR2 IN DEFAULT
AUTO_REFRESH NUMBER IN DEFAULT
BASE_PATH VARCHAR2 IN DEFAULT
TYPE VARCHAR2 IN DEFAULT

需要Oracle 11g R2以上版本。此函数用于产生一个对监控SQL的汇总页,类似于EM中的“Monitored SQL Executions”。

常用参数:TYPE和REPORT_LEVEL,用法与REPORT_SQL_MONITOR类似。

例如:

conn /as sysdba;
SET LONG 1000000
SET LONGCHUNKSIZE 1000000
SET LINESIZE 1000
SET PAGESIZE 0
SET TRIM ON
SET TRIMSPOOL ON
SET ECHO OFF
SET FEEDBACK OFF
SPOOL REPORT_SQL_MONITOR_LIST.HTML
SELECT dbms_sqltune.report_sql_monitor_list(
type => 'HTML',
report_level => 'ALL') AS report
FROM dual;
SPOOL OFF



2)DBMS_SQLTUNE.REPORT_SQL_DETAIL


FUNCTION REPORT_SQL_DETAIL RETURNS CLOB
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SQL_ID VARCHAR2 IN DEFAULT
SQL_PLAN_HASH_VALUE NUMBER IN DEFAULT
START_TIME DATE IN DEFAULT
DURATION NUMBER IN DEFAULT
INST_ID NUMBER IN DEFAULT
DBID NUMBER IN DEFAULT
EVENT_DETAIL VARCHAR2 IN DEFAULT
BUCKET_MAX_COUNT NUMBER IN DEFAULT
BUCKET_INTERVAL NUMBER IN DEFAULT
TOP_N NUMBER IN DEFAULT
REPORT_LEVEL VARCHAR2 IN DEFAULT
TYPE VARCHAR2 IN DEFAULT
DATA_SOURCE VARCHAR2 IN DEFAULT
END_TIME DATE IN DEFAULT
DURATION_STATS NUMBER IN DEFAULT
需要Oracle 11g R2以上版本。此函数用于根据各种条件参数(包括:start_time, end_time, duration, inst_id, dbid, event_detail,bucket_max_count, bucket_interval, top_n, duration_stats),产生比使用REPORT_SQL_MONITOR更加详细的SQL报告。

例如:


conn /as sysdba;
SET LONG 1000000
SET LONGCHUNKSIZE 1000000
SET LINESIZE 1000
SET PAGESIZE 0
SET TRIM ON
SET TRIMSPOOL ON
SET ECHO OFF
SET FEEDBACK OFF
SPOOL REPORT_SQL_DETAIL_HTML.HTML
SELECT dbms_sqltune.REPORT_SQL_DETAIL(SQL_ID => '74qqqwntwzxb1',
TYPE => 'active',
report_level => 'ALL') AS report
FROM dual;
SPOOL OFF

ERROR:
ORA-13971: Component "sql_detail" unknown
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.DBMS_REPORT", line 166
ORA-06512: at "SYS.DBMS_REPORT", line 612
ORA-06512: at "SYS.DBMS_REPORT", line 1079
ORA-06512: at "SYS.DBMS_REPORT", line 1135
ORA-06512: at "SYS.DBMS_SQLTUNE", line 20101
ORA-06512: at line 1
(上述错误在指定html格式,调整为active格式即可)



可以针对topSQL

conn /as sysdba;
SET LONG 1000000
SET LONGCHUNKSIZE 1000000
SET LINESIZE 1000
SET PAGESIZE 0
SET TRIM ON
SET TRIMSPOOL ON
SET ECHO OFF
SET FEEDBACK OFF
SPOOL REPORT_SQL_DETAIL.HTML
SELECT dbms_sqltune.report_sql_detail(top_n => 5,
TYPE => 'active',
report_level => 'ALL') AS report
FROM dual;
SPOOL OFF


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