Oracle Average Active Session Load


Oracle Database Admin should know what is the database load profile and Active Session load to compare it when the complaint comes from Customer.

Oracle Database admin should find average database load profile metric values for normal times. Because When customer complain from Slowness then DBA can find actual load profile metric values and compare it from average load profile value.

You can find average Active session of database with following script.


 SELECT 'Load',
WHEN ( ( CAST (end_time.sample_time AS DATE)
- CAST (start_time.sample_time AS DATE))
* 24
* 60
* 60) = 0
( COUNT (ash.sample_id)
/ ( ( CAST (end_time.sample_time AS DATE)
- CAST (start_time.sample_time AS DATE))
* 24
* 60
* 60)),
AS Average_Active_Session
FROM (SELECT MIN (sample_time) sample_time
FROM v$active_session_history ash
WHERE sample_time BETWEEN SYSDATE - 1 / 1440 AND SYSDATE) start_time,
(SELECT MAX (sample_time) sample_time
FROM gv$active_session_history
WHERE sample_time BETWEEN SYSDATE - 1 / 1440 AND SYSDATE) end_time,
gv$active_session_history ash
WHERE ash.sample_time BETWEEN start_time.sample_time
AND end_time.sample_time
GROUP BY end_time.sample_time, start_time.sample_time;


Do you want to learn Oracle Database for Beginners, then read the following articles.

About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.


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