【转载】sql monitor

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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 ——>Monitor SQL

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ACTIVE Report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=1 http://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=1 http://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()

FUNCTION REPORT_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

4.1 Text文本格式

1） Sqlplus 参数设置查看

show parameter statistics_level;

NAME TYPE VALUE

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

statistics_level string TYPICAL

show parameter 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*/* from scott.dept where deptno<=30;

DEPTNO DNAME 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 from v$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

4.2 HTML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

4.3 Active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