ASH Analytics

Kellyn Pot’Vin, Sr. Technical Consultant,

Enkitec

Top Activity, The Next Generation

About me:

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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

ASH, AWR,ADDM and the EM12c

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• 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!

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

Similar Interface

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• 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.

The Install

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Simple Installation

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Installing ASH Analytics

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What Was Installed?

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Post Installation

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Role of the DBA

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• 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.

How the DBA Views Wait Events

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• 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?

Waits as a Pie Chart

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49.07

22.78

12.07

11.08 direct path readtemp

direct path writetemp

CPU + Wait forCPU

PX Deq Credit:send blkd

ASH Analytics Load Map

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First View of ASH Analytics

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ASH Analytics- Filtering

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Viewing Waits, Filtered

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Highlight and the Drilldown

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Drilldown to Pinpoint

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Why Load Map

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• 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.

A Picture is a Thousand Words

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Filtering with Load Maps

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• 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.

Wait Event by SQL_ID in Hybrid

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Wait Event by SQL_ID in OLAP

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OLTP Load Map by Transaction_id

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Real –Time ADDM and

Comparisons

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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.

Performance Degradation

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Run Comparison

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Summary

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• 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.

Q&A

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Follow me on Twitter @DBAKevlar

Linked in and Facebook: Kellyn Pot’Vin

Email: dbakevlar@gmail.com or kpotvin@enkitec.com