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

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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
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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!
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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

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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.
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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
• 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.
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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?
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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
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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
• 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.
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A Picture is a Thousand Words
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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.
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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
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.
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Performance Degradation
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Run Comparison
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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.
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Q&A
Follow me on Twitter @DBAKevlar
Linked in and Facebook: Kellyn Pot’Vin
Email: dbakevlar@gmail.com or kpotvin@enkitec.com
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