Gareth Copplestone-Jones
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Why join "The World of DB2"?
Looking for "one stop shopping" for information, Looking for education, Looking for news blogs and podcasts, Looking for information on local user groups
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High Availability and Disaster Recovery
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What best describes your job role?
IBM Employee / Business Partner

Gareth Copplestone-Jones's Blog

Support for the extended LRSN and RBA format in IBM Db2 for z/OS

Posted on January 28, 2018 at 19:30 0 Comments

Some time ago, John Campbell, Michael Dewert and I published a Db2 white paper on the support for the extended LRSN and RBA format introduced in Db2 11. This paper is no longer available on the internet, so we have decided to reproduce it here as it contains valuable information for safely implementing the extended format in both data sharing and non-data sharing environments, and in particular for avoiding pitfalls which can lead to unplanned outages. …

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Exploit in-memory computing on DB2 12 for z/OS to realize gains

Posted on February 22, 2017 at 15:00 0 Comments

Previously I outlined the themes and highlights of DB2 12 for z/OS, including some high-level performance expectations. Let’s move on to look at a developing strategy to deliver performance and scalability improvements by the exploitation of large real memory, particularly the use of in-memory data structures optimised for performance.



The two…

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IBM DB2 12 for z/OS is ready for Hybrid Transactional Analytical Processing

Posted on January 11, 2017 at 19:00 1 Comment

IBM DB2 12 for z/OS became generally available on Oct. 21, 2016. It's perhaps sobering to reflect on the fact that DB2 was first announced in 1983 and released in 1985, but its roots—and the roots of all relational databases—go all the way back to mathematician and IBM Fellow Edgar F. Codd's ground-breaking 1970 paper, "A Relational Model of Data for Large Shared Data Banks."



Many major…

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New SQL pagination syntax - a Db2 12 greatest hit with John Campbell

Posted by Paul McWilliams on May 22, 2018 at 21:25 0 Comments

Db2 12 for z/OS introduces new SQL syntax that makes the difficult task of coding efficient SQL pagination—returning a portion of a result set based on data position—much easier for application developers. Read more in…

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