https://www.oracle.com/database/technologies/exadata/software/hcc/
Hybrid Columnar Compression | Oracle Exadata Database Machine | Oracle Technology
Hybrid Columnar Compression on Exadata enables the highest levels of data compression and performance improvements due to reduced I/O. Providing enterprises...
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https://www.oracle.com/technical-resources/articles/storage/sto-estimate-space-hcc.html
How to Estimate Space Savings with Oracle Database 11g Hybrid Columnar Compression and Oracle ZFS...
This article provides a procedure for implementing, testing, and evaluating the space savings that you can achieve using storage systems from Oracle and the...