Tag: MySQL

Exposing Innodb Internals via System Variables: Part 2, I/O (structure and logs)

In part 2 of this series, Peter Sylvester, Lead Database Consultant at Pythian, takes a closer look at I/O structure and log related variables.

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Exposing Innodb Internals via System Variables: Part 1, Memory

Introduction A couple of months ago I decided to give myself a refresher on the mechanics of InnoDB. Having a high level understanding of what’s going on under the hood can help provide the context needed in order to resolve…

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vm.swappiness and OOM in RHEL6

The behavior of vm.swappiness was always a bit confusing for novice linux users, as setting vm.swappiness to 0 would not completely disable swapping in the system during a memory crunch. vm.swappiness would only affect the agressiveness of swapping. Following upstream…

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How to Verify If a Slave Running in MySQL 5.7

Derek Downey, OSDB Practice Advocate at Pythian, explains how to verify that a Slave is running in MySQL 5.7.

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Creating An External Slave For A Live AWS Aurora Instance

Kevin Markwardt, MySQL Database Consultant at Pythian, explains how to set up an external slave for a live Amazon AWS Aurora instance.

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

Fahd Mirza, Oracle Database Administrator at Pythian, highlights top blogs posts in the worlds of Oracle, SQL Server and MySQL.

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Eight Ways To Ensure Your Applications Are Enterprise-Ready

Elliot Zissman, Managing Director at Pythian, provides practical tips to ensure your organization’s applications are enterprise-ready.

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Quick Random Data In MySQL

Valerie Parham Thompson, Lead Database Consultant at Pythian, provides some sql statements to get some quick random data in MySQL.

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Can We Just Dump Data From A View Using Mysqldump?

Edwin Wang, MySQL DBA at Pythian, discusses dumping data from a view using Mysqldump.

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Exploring The Operations Log In MongoDB

Igor Donchovski, Database Consultant at Pythian, explains the MongoDB Operations log. Discover how the replication window compares to MySQL, how to change the oplog size, and what is improved in MongoDB 3.0 wiredTiger engine.

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