DB2 UDB for z/OS Version 8 Performance Topics - IBM Redbooks
DB2 UDB for z/OS Version 8 Performance Topics - IBM Redbooks
DB2 UDB for z/OS Version 8 Performance Topics - IBM Redbooks
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Preface<br />
<strong>IBM</strong>® DATABASE 2 Universal Database Server <strong>for</strong> z/<strong>OS</strong> <strong>Version</strong> 8 (<strong>DB2</strong> V8 or V8 throughout<br />
this <strong>IBM</strong> <strong>Redbooks</strong> publication) is the twelfth and largest release of <strong>DB2</strong> <strong>for</strong> MVS. It brings<br />
synergy with the zSeries® hardware and exploits the z/<strong>OS</strong> 64-bit virtual addressing<br />
capabilities. <strong>DB2</strong> V8 offers data support, application development, and query functionality<br />
enhancements <strong>for</strong> e-business, while building upon the traditional characteristics of availability,<br />
exceptional scalability, and per<strong>for</strong>mance <strong>for</strong> the enterprise of choice.<br />
Key improvements enhance scalability, application porting, security architecture, and<br />
continuous availability. Management <strong>for</strong> very large databases is made much easier, while<br />
64-bit virtual storage support makes management simpler and improves scalability and<br />
availability. This new version breaks through many old limitations in the definition of <strong>DB2</strong><br />
objects, including SQL improvements, schema evolution, longer names <strong>for</strong> tables and<br />
columns, longer SQL statements, enhanced Java and Unicode support, enhanced utilities,<br />
and more log data sets.<br />
This book introduces the major per<strong>for</strong>mance and availability changes as well as the<br />
per<strong>for</strong>mance characteristics of many new functions. It helps you understand the per<strong>for</strong>mance<br />
implications of migrating to <strong>DB2</strong> V8 with considerations based on laboratory measurements.<br />
It provides the type of in<strong>for</strong>mation needed to start evaluating the per<strong>for</strong>mance impact of <strong>DB2</strong><br />
V8 and its capacity planning needs.<br />
Notice that in this document <strong>DB2</strong> refers to the z/<strong>OS</strong> member of the <strong>DB2</strong> family of products.<br />
We have specified the full name of the products whenever the reference was ambiguous.<br />
This book concentrates on the per<strong>for</strong>mance aspects of <strong>DB2</strong> V8, <strong>for</strong> a complete picture of V8<br />
functions and more details on them, refer to the documentation listed at the Web site:<br />
http://www.ibm.com/software/data/db2/zos/index.html<br />
The team that wrote this book<br />
This book was produced by a team of specialists from around the world working at the<br />
International Technical Support Organization, San Jose Center.<br />
Paolo Bruni is a <strong>DB2</strong> In<strong>for</strong>mation Management Project Leader at the International Technical<br />
Support Organization, San Jose Center. He has authored several <strong>Redbooks</strong>® about <strong>DB2</strong> <strong>for</strong><br />
z/<strong>OS</strong> and related tools, and has conducted workshops and seminars worldwide. During<br />
Paolo’s many years with <strong>IBM</strong>, in development, and in the field, his work has been mostly<br />
related to database systems.<br />
Doracilio Fernandes de Farias Jr is a Systems Analyst with Bank of Brazil since 1999. He<br />
has provided <strong>DB2</strong> <strong>for</strong> z/<strong>OS</strong> support on installation, customization, migration, and per<strong>for</strong>mance<br />
in a very large data sharing complex. Doracilio has extensive experience with per<strong>for</strong>mance<br />
analysis, both at system and subsystem level, and logical and physical database design.<br />
Yoshio Ishii is a <strong>DB2</strong> <strong>for</strong> z/<strong>OS</strong> Consultant at Lawrence Consulting, an <strong>IBM</strong> business partner<br />
company providing strategic IT consulting services, education and mentoring <strong>for</strong> <strong>IBM</strong> <strong>DB2</strong><br />
and WebSphere® software. Yoshio has been working as DBA, per<strong>for</strong>mance analyst <strong>for</strong> data<br />
warehouse, and instructor <strong>for</strong> "<strong>DB2</strong> Per<strong>for</strong>mance <strong>for</strong> Applications" since 2003. Be<strong>for</strong>e<br />
becoming a Consultant in 1999, he had been working <strong>for</strong> <strong>IBM</strong> <strong>for</strong> 30 years. He has previously<br />
co-authored the book <strong>DB2</strong> <strong>Version</strong> 4 Data Sharing Per<strong>for</strong>mance <strong>Topics</strong>, SG24-4611.<br />
© Copyright <strong>IBM</strong> Corp. 2005. All rights reserved. xxv
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