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Displaying posts with tag: Oracle (reset)
Thank You For Attending Oracle OpenWorld 2016 - Download Slides

MySQL Support was represented at Oracle OpenWorld 2016 with two engineers: Ligaya Turmelle and Jesper Krogh. We did a total of four talks and spend 20 some hours in total at the Support Stars Bar. We would like to thank all of you who attended. It was good meeting some of you and talk about your experiences - both good and not so good - using MySQL.

If you attended one of our talks and would like to study some of the slides in more details - or you were not able to attend, all of our presentations are available from the Oracle OpenWorld content catalogue (except the Support Stars Bar mini briefing which is available from this blog):

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About Oracle MySQL and CVE-2016-6662

The issue On 12 September 2016 (three days ago) a MySQL security vulnerability was announced. The CVE id is CVE-2016-6662.

There are 3 claims:

  1. By setting malloc-lib in the configuration file access to an OS root shell can be gained.
  2. By using the general log a configuration file can be written in any place which is writable for the OS mysql user.
  3. By using SELECT...INTO DUMPFILE... it is possible to elevate privileges from a database user with the FILE privilege to any database account including root.

How it is supposed to be used

  1. Find an SQL Injection in a website or otherwise gain access to a MySQL account.
  2. Now create a …
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Percona Live Europe featured talk with Manyi Lu — MySQL 8.0: what’s new in Optimizer

Welcome to a new Percona Live Europe featured talk with Percona Live Europe 2016: Amsterdam speakers! In this series of blogs, we’ll highlight some of the speakers that will be at this year’s conference. We’ll also discuss the technologies and outlooks of the speakers themselves. Make sure to read to the end to get a special Percona Live Europe registration bonus!

In this Percona Live Europe featured talk, we’ll meet Manyi Lu, Director Software Development at Oracle. Her talk will be on MySQL 8.0: what’s new in Optimizer. There are substantial improvements in the optimizer in MySQL 5.7 and MySQL 8.0. Most noticeably, users can now combine …

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Meet MySQL Support at Oracle OpenWorld 2016

It is soon time for the annual Oracle OpenWorld conference in San Francisco. This year it takes place from 18 to 22 September. There will be a wide range of talks about MySQL and other Oracle products with speakers including Oracle developers, product management, Support, customers, and community members. So there should be something for everyone.

MySQL Support will have two talks this year:

Time Session
Title Room
Presenter
Monday 11:00am - 01:00pm
TUT1718
MySQL DBA Primer
Park Central—Stanford Lig Isler-turmelle
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Basically Shitty License

Monty announced that he has created a new non-open source license called the "Business Source License" or BSL.  I think it should have a different name...

You see, Monty has fundamentally crafted a straw man to stand in for the general Open Source model by applying his experience in the dog-eat-dog world of forked software, in particular, the "ecosystem" of MySQL.  The software that MariaDB draws the majority of their income from is MariaDB, which is a fork of MySQL.  If you don't know the history, well, you see, SUN bought MySQL, Oracle bought Sun, and Monty, in an environment of nearly Biblical levels of FUD, forked MySQL into MariaDB (both products are named after his daughters).

While MariaDB was originally envisioned as a "drop in/drop out" replacement, it has diverged so far from the Oracle product that it is no longer even "drop in" with the latest versions of MySQL. Oracle is adding amazing new …

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Working Around MySQL Cluster Push Down Limitations Using Subqueries

I worked on an issue last recently where a query was too slow when executed in MySQL Cluster. The issue was that Cluster has some restrictions when it comes to push down conditions.

As an example of this, consider the following query using the employees sample database. The query takes a look at the average salary based on how many years the employee has been with the company. As the latest hire date in the database is in January 2000, the query uses 1 February 2000 as the reference date.

Initially the query performs like (performance is with two data nodes and all nodes in the same virtual machine on a laptop, so the timings are not necessarily representative of a production system, though the improvements should be repeatable):

mysql> SELECT FLOOR(DATEDIFF('2000-02-01', hire_date)/365) AS LengthOfService,
              COUNT(DISTINCT employees.emp_no) AS NoEmployees, AVG(salary) AS AvgSalary
         FROM salaries …
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LinkedIn China new Social Platform Chitu. Interview with Dong Bin.

“Complicated queries, like looking for second degree friends, is really hard to traditional databases.” –Dong Bin

I have interviewed Dong Bin, Engineer Manager at LinkedIn China. The LinkedIn China development team launched a new social platform — known as Chitu — to attract a meaningful segment of the Chinese professional networking market.

RVZ

Q1. What is your role at LinkedIn China?

Dong Bin: I am an Engineer Manager in charge of the backend services for Chitu. The backend includes all Chitu`s consumer based features, like feeds, chat, event, etc.

Q2. You recently launched a new social platform, called Chitu. Which segment of the …

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Backup and Restore of Encrypted Innodb Tables


Log Buffer #482: A Carnival of the Vanities for DBAs

This Week’s log buffer edition covers some of the useful blog posts from Oracle, SQL Server and MySQL.

Oracle:

ASM disks – lsdg compared with the v$asm_diskgroup view

Can a query on the standby update the primary ?

What should I know about SQL?

Setting Environment Variables in Application Server/Process Scheduler Tuxedo Domains

Oracle …

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Eight Ways To Ensure Your Applications Are Enterprise-Ready

When it comes to building database applications and solutions, developers, DBAs, engineers and architects have a lot of new and exciting tools and technologies to play with, especially with the Hadoop and NoSQL environments growing so rapidly.

While it’s easy to geek out about these cool and revolutionary new technologies, at some point in the development cycle you’ll need to stop to consider the real-world business implications of the application you’re proposing. After all, you’re bound to face some tough questions, like:

Why did you choose that particular database for our mission-critical application? Can your team provide 24/7 support for the app? Do you have a plan to train people on this new technology? Do we have the right hardware infrastructure to support the app’s deployment? How are you going to ensure there won’t be any bugs or security vulnerabilities?

If you don’t have a plan for …

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