10GR2迁移升级到11GR2压力性能测试二

最近对一个10GR2的环境进行了迁移升级至ORACLE 11GR2，在业务真正进行切换之前，对升级的环境进行了
大量的性能分析和压力测试工作，ORACLE 11G中提供的real application testing确实很方便实用。
暂且将部分测试步骤记录在此，后续整理成一个完整的文档

SQL REPLAY 部分


10G database 执行

14:35:34 SQL> EXEC DBMS_SQLTUNE.create_sqlset(sqlset_name => 'RAC38N1',description => 'SPA TEST');
 
PL/SQL procedure successfully completed
 
Executed in 0.109 seconds
 
将快照ID 20660,20661 的SQL 放到SQLSET
14:46:04 SQL> declare cur sys_refcursor;
           2  begin
           3  open cur for
           4  SELECT VALUE(P) FROM
           5  TABLE(DBMS_SQLTUNE.select_workload_repository(20660,20661)) p;
           6  dbms_sqltune.load_sqlset(sqlset_name => 'RAC38N1',populate_cursor => cur);
           7  close cur;
           8  end;
           9  /
 
PL/SQL procedure successfully completed
 
Executed in 0.546 seconds

--也可以用V$SQL中的符合条件的SQL_TEXT建立SQLSET
-- dbms_sqltune.select_cursor_cache('sql_text like ''select * from mytab%''',
                                     null,null,null,null,null,null,'ALL')) P;

查看SQLSET中的内容 
select * from table(dbms_sqltune.select_sqlset('RAC38N1'));

......result 


将10G环境的SQLSET传输到 11G 环境
--transporting 
首先在10G中建立存储SQLSET 的表
14:46:06 SQL> exec dbms_sqltune.create_stgtab_sqlset(table_name => 'SPA_38N1',schema_name => 'PAYADM');
 
PL/SQL procedure successfully completed
 
Executed in 0.438 seconds

将SQLSET的内容PACK到表中 
14:51:24 SQL> EXEC DBMS_SQLTUNE.pack_stgtab_sqlset(sqlset_name => 'RAC38N1',
                                                   staging_table_name => 'SPA_38N1',
                                                   staging_schema_owner => 'PAYADM');
 
PL/SQL procedure successfully completed
 
Executed in 1.047 seconds

11G database 执行

使用DBLINK的方式将存储SQLSET内容的表结构内容传到11G数据库55.52

运行下面语句将SQLSET  加载到11G SQLSET
15:04:43 SQL> EXEC DBMS_SQLTUNE.unpack_stgtab_sqlset(sqlset_name => 'RAC38N1',
                                                     replace => TRUE,
                                                     staging_table_name => 'SPA_38N1',
                                                     staging_schema_owner => 'PAYADM');
 
PL/SQL procedure successfully completed
 
Executed in 0.422 seconds

创建analysis_task RAC38N1
DECLARE V_SPA_NAME VARCHAR2(100);
BEGIN
V_SPA_NAME:=spa_dbms_xhl.create_analysis_task(sqlset_name => 'RAC38N1',task_name => 'spa_38_task');
dbms_output.put_line('spa_name='||v_spa_name);
end;
/

如果没有安装real application testing 组件将报下面错误

ORA-00438: 未安装 Real Application Testing 选件
ORA-06512: 在 "SYS.PRVT_SMGUTIL", line 80
ORA-06512: 在 "SYS.DBMS_SQLPA", line 220
ORA-06512: 在 line 4

shutdown 数据库 运行$ORACLE_HOME/oui/runInstaller 添加此组件

9:38:20 SQL> DECLARE V_SPA_NAME VARCHAR2(100);
          2  BEGIN
          3  V_SPA_NAME:=dbms_sqlpa.create_analysis_task(sqlset_name => 'RAC38N1',task_name => 'spa_38_task');
          4  dbms_output.put_line('spa_name='||v_spa_name);
          5  end;
          6  /
 
PL/SQL procedure successfully completed
 
Executed in 0.578 seconds

生成10G 的trail
9:42:35 SQL> exec dbms_sqlpa.execute_analysis_task(task_name => 'spa_38_task',
                                                   execution_type => 'CONVERT SQLSET',
                                                   execution_name => 'SPA_3810G');
 
PL/SQL procedure successfully completed

生成11G 的trail
9:43:57 SQL> exec dbms_sqlpa.execute_analysis_task(task_name => 'spa_38_task',
                                                   execution_type => 'TEST EXECUTE',
                                                   execution_name => 'SPA_5211G');
 
PL/SQL procedure successfully completed
 
Executed in 57.484 seconds

开始比较
9:54:54 SQL> 
elapsed_time 比较
exec dbms_sqlpa.execute_analysis_task(task_name => 'spa_38_task',execution_type => 'COMPARE PERFORMANCE',
                                                   execution_name => 'compare_elp_time', 
                                                   execution_params => dbms_advisor.argList('comparison_metric','elapsed_time'));

buffer_gets 比较                                                   
exec dbms_sqlpa.execute_analysis_task(task_name => 'spa_38_task',execution_type => 'COMPARE PERFORMANCE', execution_name => 'compare_buff_gets',  execution_params => dbms_advisor.argList('comparison_metric','buffer_gets'));                                        
            PL/SQL procedure successfully completed 
Executed in 0.532 seconds

生成比较报告

select dbms_sqlpa.report_analysis_task('spa_38_task','HTML','ALL','ALL') FROM DUAL


报告示例：

Workload Impact Threshold: 1%

SQL Impact Threshold: 1%

Report Summary

---

Projected Workload Change Impact:

---

Overall Impact	:	29.59%
Improvement Impact	:	33.06%
Regression Impact	:	-3.46%

SQL Statement Count

---

SQL Category	SQL Count	Plan Change Count
Overall	132	30
Improved	4	3
Regressed	1	1
Unchanged	74	26
with Errors	44	0
Unsupported	9	0

Top 79 SQL Sorted by Absolute Value of Change Impact on the Workload

---

object_id	sql_id	Impact on  Workload	Execution  Frequency	Metric  Before	Metric  After	Impact  on SQL	Plan  Change
150	0yp9c5psy8h6g	19.7%	70599	247932.292950325	178157	28.14%	y
231	a3kxbucrmcw2u	6.76%	8267	209556.443933712	5171	97.53%	y
252	d9ub4kj07srsj	-3.46%	488	1094297.71516393	2867155	-162.01%	y
202	6dtnjvsv15haj	3.45%	7479	241947.48215002	126509	47.71%	y
221	8n54r6zd8hb6h	3.14%	96831	8142.28296723157	27	99.67%	n