OOW 2012: reflections
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Transcript of OOW 2012: reflections
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OOW 2012: reflectionsJohn HurleyLong time Oracle geekDBA for Summit RacingNEOOUG officer
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To be covered:• NEOOUG history• Get involved and get paid!• The San Francisco experience• General impressions of recent OOW trips• 2012 Oracle conference takeaways• 2012 Oak Table World snapshot• Hotsos 2013 in Dallas!
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NEOOUG History• Started in 1989 … I first started attending
NEOOUG meetings in late 1990’s at the Independence Library
• Meetings were monthly? • Rumpi/Gary/Paul are still around• Other area database groups still active
include:• NEODBUG (http://www.neodbug.org )• ONSSUG ( http://ohionorthsqlserverug.org )
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NEOOUG History• Our first breakout event was in 2003 at
LCC with Gaja Vaidyanatha … damagers … compulsive tuning disorder
• LCC again 2004 with Steven Feuerstein• Case Western Reserve days Tom Kyte /
Cary Millsap / Jonathan Lewis• Crazy Rumpi wanted us to move to 2
day event conferences • Cleveland State University and the
recent conferences
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Great Lakes Oracle Conference• Chris Date: godfather of relational database
theory and design principles. Books include “An Introduction to Database Systems”, “Database in Depth: Relational Theory for Practitioners”.
• Tom Kyte … Oracle employee and world class speaker.
• Optional extra cost sessions Monday • Dates are Tuesday/Wedneday• Working with OOUG ( Columbus based )
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Get involved and get paid:• Friendly atmosphere and the support of
our officers in getting ready to speak• Presentations done at work can be
recycled/repurposed for NEOOUG ( and vice versa )
• An opportunity to grow personally and professionally
• Mad money for free!
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San Francisco experience:
PS: the weather is not usually like this!
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Oracle Music Festival 2012
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2012 conference takeaways:• Really pushing the engineered systems
marketing message• Hard to find quality technical sessions but still:
Maria Colgan / Tom Kyte / Jonathan Lewis etc• 12c Database new features include VARCHAR2
up to 32767 (RAW/NVARCHAR2) size greater than 4000 stored out of line like LOB columns.
• Adaptive execution plans ( build on adaptive cursor sharing and bind variable peeking ). Limited on the fly changes in execution plans at first ( nested loops change to has joins ).
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12c changes continued• Adaptive statistics … additional statistics including
relationships between columns gathered/stored in memory used by optimizer until next instance recycle.
• Dynamic sampling levels increase to 11and highest level makes dynamic statistics persistent
• Data optimization or heat maps … database can monitor block usage frequency ( hot/medium/cold ) to help aid resolving access bottlenecks
• New ILM clause to create/alter table commands allow compression/archival of data after a given periods of time ( might work really well for partitions ).
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This is pretty much the atmosphere at Oak Table World … a conference within a conference!
Oak Table World 2012 ( at OOW 2012 )
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