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

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 […]