Oracle 19c – Features We Know About

Oracle Open World was interesting like every year. This year, Oracle started talking about features that will probably be in Oracle 19c (which is the last 12.2 release). The rumor says that it will be out in the first half of 2019 (somewhere around April-May).

As you might know, I didn’t attend a lot of sessions, but managed to gather some information about expected features (given Oracle’s safe harbor of course).

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Open World 2019 Dates

In the past, during OOW Oracle published the official dates of OOW of the following year, but in the last few years they stopped doing this, so we can’t be sure when OOW19 will be. There was a lot of unknown about OOW18 until the official dates were released (and 2018 is the first year the User Group Sunday was removed and it became a 4-day event)

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Getting Crazy with Analytic Functions and Group By

This topic has been sitting in my backlog for a long time and I finally decided to write it. Analytic functions are not so new anymore (they’ve been around since Oracle 8i), but they are still a very powerful tool.

This is based on a real case I had quite a few years ago. A client came to me with a question regarding a graph they had to generate.

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If ORA- Codes Were Buildings

It all started when Franck Pachot tweeted a simple tweet. The tweet was of building number 600 at Oracle offices and Franck wrote: “Dedicated to all ORA-600 friends”. To that Connor McDonald replied with: “The 7445 building is in the middle of the lake. Don’t try go there :-)” which led me to start a thread of “if buildings behaved according to the meaning of their ORA- number”.

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When Even Histograms Can’t Help

Here is an interesting optimizer case where updated statistics and histograms cannot solve the performance problem. This might be an uncommon case, but it happened for one of my clients and this post is the result of some research on this.

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