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Nathan,

Sorry, I mean to say 64k page size, not access path.

You don't have to take my word for it though, IBM's already proven the point here:

http://www-03.ibm.com/systems/resources/systems_i_software_db2_pdf_Performance_DDS_SQL.pdf

Matt



-----Original Message-----
From: Nathan Andelin [mailto:nandelin@xxxxxxxxx]
Sent: Friday, October 24, 2014 3:24 PM
To: Midrange Systems Technical Discussion
Subject: Re: Can I use DDS to create an SQL table name


Specifically read about the 64k access path vs DDS's 8K access path.


I'm not sure if that was ever relevant, but it's not at 7.1. See the ACCPTHSIZ parameter of the CHGPF command. You can set the access path size yourself.


Also remember, there haven't been improvements in DDS for years. All
IBM's investments are happening with SQE.


Apples to oranges - no, the comparison is more like apples to bicycles. The SQE works the same with both DDS and DDL tables.


Check out slide #64 and on. Another awesome slide is #73 that lists of a
ton of features you can't do with DDS.


It's not clear what is being tested in slide #64, but I have run benchmarks where RLA outperformed SQL 5 to 1. Granted, I have run other benchmarks where SQL performed better than RLA. Depends on what you need to accomplish.

Nathan.
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