About

Martin Klier

usn-it.de

Oracle ACE Director

Uh, there has been no blog entry for some time, had a busy time. So now I have a good reason to blog after returning from Collaborate18 in Las Vegas, where I had the chance to present two talks about SQL Tuning and Oracle Performance on VMware. The Oracle ACE Program usually hosts a dinner […]

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Featured by Oracle Magazine

The Oracle Magazine featured me in its January / February 2016 issue. I really feel honoured and would like to say thank you for the opportunity! For details, please see the Performing Databases Blog post about the publication. […]

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Oracle 11g and 12c Cardinality Feedback Leads to Hundreds of Child Cursors

Sometimes, advanced features can bring advanced problems. Seeing a project with hundreds of child cursors with a different execution plan each, is never a pleasure, but there has to be a reason. In fact, we are talking about the “USE_FEEDBACK_STATS” reason in v$sql_shared_cursor. Its meaning is: “A hard parse is forced so that the optimizer can reoptimize […]

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Oracle 12c in practice – customer report in Cologne #12cjetzt

From Beta to Production – Oracle 12c at TGW In October, I’ll speak at the Oracle #12jetzt (#12cnow) symposium in Köln (Cologne) about the introduction of 12c as standard palttform at our ISV customer TGW Software Services. I had the privilege to continuously working on the 12c product evaluation and introduction from availability of 12c beta2 […]

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