Richard Foote's Blog

Subscribe to Richard Foote's Blog feed Richard Foote's Blog
Focusing Specifically On Oracle Indexes, Database Administration and Some Great Music
Updated: 5 days 8 hours ago

Hotsos Symposium 2017: Feb 27 – Mar 2 Dallas, Texas (I’m Afraid of Americans)

Mon, 02/06/2017 - 06:42
In just 3 weeks time, I’ll again have the pleasure of presenting at the awesome Hotsos Symposium in Dallas, Texas. It’s simply the best conference with regard to Oracle performance tuning anywhere. This year, I’ll be presenting on a couple of topics: New Index Features Introduced in Oracle Database 12c Release 2 Oracle Database 12c […]

12.2 Index Advanced Compression “High” Part III (I Can’t Give Everything Away)

Wed, 01/25/2017 - 05:42
If you like the look of the new Index Advanced Compression setting of “High” available with Oracle Database 12c Release 2 as I’ve discussed previously in Part I and Part II, well there’s a way to make this the default index compression method in your 12.2 database. Let’s begin by creating a table and explicitly […]

12.2 Index Advanced Compression “High” Part II (One Of My Turns)

Mon, 12/12/2016 - 06:17
In Part I, I introduced the new Index Advanced Compression default value of “HIGH”, which has the potential to significantly compress indexes much more than previously possible. This is due to new index compression algorithms that do more than simply de-duplicate indexed values within a leaf block. Previously, any attempt to completely compress a Unique […]

12.2 Index Advanced Compression “High” – Part I (High Hopes)

Tue, 12/06/2016 - 05:52
Oracle first introduced Advanced Compression for Indexes in 12.1 as I’ve discussed here a number of times. With Oracle Database 12c Release 2, you can now use Index Advanced Compression “High” to further (and potentially dramatically) improve the index compression ratio.  Instead of simply de-duplicating the index entries within an index leaf block, High Index […]

Oracle Database 12c Release 2: New Indexing Features – Long Identifiers (Several Species of Small Furry Animals Gathered Together in a Cave and Grooving With a Pict)

Wed, 11/23/2016 - 23:10
Oracle Database 12c Release 2 has now been officially released (at least on the Oracle Database Cloud and Oracle Database Exadata Express Cloud Services). In the coming weeks, I’ll be blogging about quite a number of new indexing features/capabilities/improvements that have been introduced in Oracle Database 12c Release 2. These include: Advanced Index Compression Tracking […]