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Data Compression in DB2 LUW V9 (C15)

Topic: 2006 EU

Subtopic: DB2 for z/OS



DATE: 2006-10-5 (10:30 - 11:30)
SPEAKERS: Bill Minor (IBM Canada)

The cost of disk storage represents a significant portion of the overall expense associated with large database systems. Data compression is well known on the z/OS platform but has not been readily available on the Linux, UNIX, and Windows platforms...until NOW. In compressing data, disk space is saved by representing the same data with fewer database pages. Data compression also increases the effective density of data which leads to disk I/O savings as more user data can be stored per data page. As well, more data can be cached in the buffer pool, thereby improving buffer pool hit ratios. To achieve these benefits, extra CPU cycles are needed to compress and decompress data. As the IBM development architect responsible for the new table compression feature, I will provide an under-the-covers look into LUW compression which includes, how to use it, how it works, guidelines and best practices, as well as some performance characteristics that can be expected from this new feature.

EXP. LEVEL: Intermediate

OBJECTIVES:

An overview of the new compression features and how they are implemented

Best practices and guidelines for deploying compression

A realization of the storage benefits and performance aspects associated with compression

Customer tips and techniques

Future compression features and strategic Data Management direction



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