Embed Size (px)
Citation preview
Graphing AWR Data in Excel
David KurtzGo-Faster Consultancy Ltd.
www.go-faster.co.uk
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 2
Who Am I?
• Oracle Database Specialist– Independent consultant
• System Performance tuning– PeopleSoft ERP– Oracle RDBMS
• Book– www.psftdba.com
• UKOUG– PeopleSoft Technology SIG
Committee
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 3
Resources
• If you can’t hear me say so now.• Please feel free to ask questions as we go
along.• The presentation is available from
• UKOUG Library• www.go-faster.co.uk• See also http://blog.go-faster.co.uk
– Tip: Print in ‘black and white’ for white background.
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 4
Background Reading
• Blog Entry: – http://blog.go-faster.co.uk/2008/12/graphing-
awr-data-in-excel.html
• Download Excel Sheet:– http://www.go-faster.co.uk/
scripts.htm#awr_wait.xls
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 5
A Picture is worth 1000 metrics!
• If you are lucky you might be able to pick out that one number in an AWR/Statspack report that is different to usual.
• But– How many databases do you have to look after?– How many reports do you need to examine to
find that rogue metric?
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 6
DBA2.0
• Oracle Enterprise Manager– Graph Performance Data– Focus on time
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 7
Oracle Enterprise Manager / Grid Control
• If you don’t have it, then I am going to show you how to graph some of the data yourself.
• If you have it, it is excellent. – But it can be a bit tricky to save charts.
• Screen dump, or save graphics.
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 8
Objective
• Chart of – Time the database spent waiting
– Over the last 7 days
– Broken down by Wait Event
• I am going to use AWR data– But you can do the same thing with Statspack
• This technique can be applied to any set of metrics
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 9
Recipe
• Ingredients– A SQL Query– Microsoft Excel– SQL*Net Client
• And this is what you do…
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 11
SQL Query
• Wait Information– DBA_HIST_SYSTEM_EVENT– Snapshot of v$system_event
• Snapshot Information– DBA_HIST_SNAPSHOTS
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 12
Analytic Functions
• Wait Event Data are running totals • Use analytic function LAG() to work out the
change since last snapshot.• This is generally more efficient than getting
previous row using sub-queries.
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 13
Recipe (1): Data Source
• Create A Blank Workbook
• Data -> Import External Query -> New Database Query
• Do not use the Wizard
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 14
Recipe (2): ODBC Driver
• The first time you do this you may need to create a new data source
• Select ODBC Driver, either– Oracle ODBC
– MS ODBC for Oracle
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 15
Recipe (3): MS Query Connect
• Connect to the database in the ordinary way
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 16
Recipe (4): MS Query SQL Window
• View SQL
• Paste Query into the SQL Window
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 17
Recipe (5): MS Query Results
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 18
Recipe (6): Import Data
• Return the data to Excel. This time we want a Pivot table
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 19
Recipe (7): Pivot Wizard
• Start with Layout
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 20
Recipe (8): Pivot Layout Wizard
• Drag fields, adjust titles and formating
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 21
Recipe (9): Pivot Subtotalling
• Turn off Subtotalling
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 22
Recipe (10): Pivot Formatting
• Sort Heading, restrict to Top-n
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 23
Recipe (11): Pivot Options
• Turn off Totals• Save data with table
layout• Disable Drilldown• Save Password?
– (this could be a security issue)
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 24
Recipe (12): Pivot Chart
• Very easy– You can continue formatting in the pivot chat
• But works best when data points absolutely regular along x-axis.
• Usually OK, because AWR snapshot regularish.
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 25
Tips (1): X-Y Chart Pivot
• Can’t do it by default
• Cheat – copy to somewhere else in spreadsheet.
• Copy down previous values use cell formula when run out of data
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 26
Tips (2): Multiple pivots of same data
• Don’t create a new query, copy the sheet– The SQL is only issued once, but both sheets
refresh.
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 27
A Real System
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 28
A war story…
• Come back after lunch, and I’ll explain what was going on here, and where it led…
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 29
And here is one I prepared earlier.
• I can now – Keep the chart and data in a file– Cut & Paste to Word document or PowerPoint
• Like this…
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 30
A real system
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 31
A war story…
• Come back after lunch, and I’ll explain what was going on here, and where it led…
Questions?
Where’s lunch?
Graphing AWR Data in Excel
David KurtzGo-Faster Consultancy Ltd.
www.go-faster.co.uk
Questions?
Where’s lunch?
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 35
A war story…
• Come back after lunch, and I’ll explain what was going on here, and where it led…
Graphing AWR Data in Excel ©2009 www.go-faster.co.uk 36
A real system
