ASH Slides from MOW 2012

1. ASH Analytics
Top Activity, The Next Generation
Kellyn Pot’Vin, Sr. Technical Consultant,
Enkitec

2. About me:
Kellyn Pot’Vin,
• pronounced “Poet-vaughn”
• Senior Technical Consultant with Enkitec,
(www.enkitec.com)
• Westminster, Colorado
• Oracle, SQL Server and MySQL
• Specialize in performance and management
of large enterprise environments.
• Board of directors for RMOUG
• Blog: DBAKevlar.com
2

3. ASH, AWR,ADDM and the EM12c
• EM12c integrates ASH, (Active Session History)
for the first time into an “Top Activity” type
interface.
• AWR snapshots utilized, using point in time
metrics the DBA can examine for the windows
in time demanded.
• Real Time ADDM is used for new features,
allowing the DBA to work more closely with this
“Just the facts” reporting tool.
• More arsenal for the DBA’s weapons against
poor performance!
3

4. ASH Analytics
• ASH Analytics is available to install
dynamically as a feature of the EM 12c to any
11g database.
• T he diagnostic pack licensing is required for this
feature, just like for AWR and AD D M
reporting.
http:/ / www.oracle.com/ technetwork/ oem/ pdf/ 5118
80.pdf

5. Similar Interface
• ASH , (Active Session H istory) has been
available to assist the D BA since 10g.
• Allows the D BA to view information
across multiple performance dimensions.
• By Filtering, allows the D BA to view
performance patterns and resource usage
that wasn’t clearly displayed in the past.
5

6. The Install
6

7. Simple Installation
7

8. Installing ASH Analytics
8

9. What Was Installed?
9

10. Post Installation
10

11. Role of the DBA
• Technical specialist in all that is,
corresponds and impacts the database.
• We fill so many other roles, but our
primary role is to support our customers-
management, users, clients and
developers.
11

12. How the DBA Views Wait Events
• By looking at this wait event table, does the
customer understand the issue?
• If you include this in a report, does it offer value
to your customer?
12

13. Waits as a Pie Chart
11.08
direct path read
temp
12.07 direct path write
temp
49.07 CPU + Wait for
22.78
CPU
PX Deq Credit:
send blkd
13

14. ASH Analytics Load Map
14

15. First View of ASH Analytics
15

16. ASH Analytics- Filtering
16

17. Viewing Waits, Filtered
17

18. Highlight and the Drilldown
18

19. Drilldown to Pinpoint
19

20. Why Load Map
• Secondary way to break down wait
events.
• Easier for Non-DBA’s to understand
impact of wait events.
• Great visual and reporting tool to
clients.
• Clear, undeniable view of impact of
database, waits, processes and
advanced processing.
20

21. A Picture is a Thousand Words
21

22. Filtering with Load Maps
• Choose Simple or Advanced Filtering
Options.
• Breakdown the filtering in the order
that is pertinent to the question about
performance for the snapshot you’re
narrowed to.
• Drilldown from any point in the
loadmap to the process, wait event
or resource usage.
22

23. Wait Event by SQL_ID in Hybrid
23

24. Wait Event by SQL_ID in OLAP
24

25. OLTP Load Map by Transaction_id
25

26. Real –Time ADDM and
Comparisons
Introduced in EM12c, the ADDM comparison report
allows a DBA to compare a created snapshot in
time to a second snapshot.
• Time is not fixed, can be a different total of
minutes, different days, compare anything in
retained in the repository against one another.
• The report notifies you of multiple impacting
indicators, including percentage of
compatibility of the comparisons and drilldown
areas for both panes.
26

27. Performance Degradation
27

28. Run Comparison
28

29. Summary
• ASH Analytics is the future of the “Top
Activity” View in the Enterprise
Manager.
• The benefits are clear in regards to
viewing, trouble-shooting and defining
performance metrics, resource usage
and issues.
• The future holds many advanced
performance metrics and features to be
integrated into this new interface.
29

30. Q&A
Follow me on Twitter @DBAKevlar
Linked in and Facebook: Kellyn Pot’Vin
Email: dbakevlar@gmail.com or kpotvin@enkitec.com
30