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Showing entries 1 to 10 of 112 10 Older Entries

Displaying posts with tag: DBA (reset)

Log Buffer #429: A Carnival of the Vanities for DBAs
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This Log Buffer Edition gathers a wide sample of blogs and then purifies the best ones from Oracle, SQL Server and MySQL.

Oracle:

  • If you take a look at the “alter user” command in the old 9i documentation, you’ll see this: DEFAULT ROLE Clause.
  • There’s been an interesting recent discussion on the OTN Database forum regarding “Index blank …
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Bash Arrays & MySQL
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Student questions are always interesting! They get me to think and to write. The question this time is: “How do I write a Bash Shell script to process multiple MySQL script files?” This post builds the following model (courtesy of MySQL Workbench) by using a bash shell script and MySQL script files, but there’s a disclaimer on this post. It shows both insecure and secure approaches and you should avoid the insecure ones.

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File carving methods for the MySQL DBA
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This is a long overdue blog post from London’s 44con Cyber Security conference back in September. A lot of old memories were brought to the front as it were; the one I’m going to cover in this blog post is: file carving.

So what is file carving? despite the terminology it’s not going to be a full roast dinner; unless you have an appetite for data which as you’re here I’m assuming you have.

The TL;DR of “what is file carving” is taking a target blob of data (often a multi GB / TB file) and reducing it in …

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Database Automation - Private DBaaS for MySQL, MariaDB and MongoDB with ClusterControl
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October 9, 2014 By Severalnines

Installing, configuring, deploying databases and performing repetitive administrative tasks are all part of a DBA’s or sysadmin’s job. This can get pretty repetitive and overwhelming if you are part of a centralized IT team, running multiple databases for your organization’s different departments, or a managed hosting provider responsible for setting up and operating databases for external clients. One way to get out of this ‘manual, repetitive task’ business is through a Database as a Service (DBaaS).

DBaaS is a way of delivering database functionality as a …

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Fedora PostgreSQL Install
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Somebody asked how to put PostgreSQL on my Fedora image with Oracle Database 11g and MySQL. It’s fairly simple. You can check for the current download at yum.postgresql.org and then download it like this as the root user:

yum localinstall http://yum.postgresql.org/9.3/fedora/fedora-20-x86_64/pgdg-fedora93-9.3-1.noarch.rpm

You should see the following output when the download is successful, don’t forget to type y to complete the download:

Loaded plugins: …
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The Road to MySQL 5.6: Default Options
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When you're testing out a new version of MySQL in a non-production environment there is a temptation to go wild and turn on all kinds of new features.  Especially if you're reading the changelogs or the manual and scanning through options.  You want to start with the most reasonable set of defaults, right?  Maybe you're even doing benchmarks to optimize performance using all the new bells and whistles.

Resist the temptation!  If your goal is to upgrade your production environment then what you really want is to isolate changes.  You want to preform the upgrade with as little to no impact as possible.  Then you …

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MySQL for Database Administrators Training Available in Eight Languages
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The MySQL for Database Administrators training course is one of the most popular courses at Oracle. This is not surprising since it provides a comprehensive range of administration skills to those using the world's most popular open source database.

You can travel to an education center to take this 5-day instructor-led course, and as shown in the table below, events are currently scheduled for delivery in 8 languages (Arabic, Brazilian Portuguese, …

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9 Tips for Going in Production with Galera Cluster for MySQL
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August 25, 2014 By Severalnines

Are you going in production with Galera Cluster for MySQL? Here are 9 tips to consider before going live. These are applicable to all 3 Galera versions (Codership, Percona XtraDB Cluster and MariaDB Galera Cluster). 

 

1. Galera strengths and weaknesses

 

There are multiple types of replication and cluster technologies for MySQL, make sure you understand how Galera works so you set the right expectations. Applications that run on single instance MySQL might not work …

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The Road to MySQL 5.6 -- A DBA Perspective
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We've all heard the hype.  MySQL 5.6 is packed with amazing new features that address all our database problems.  5.6 deals with replication and HA and performance and monitoring and  …

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Setting up and Using MySQL Replication
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MySQL Replication allows servers to copy changes from one instance to another. Take the MySQL for Database Administrators course to learn about replication, including:

  • How to set up a replication environment
  • Complex topologies
  • Replication types
  • Global transaction IDs (GTIDs)
  • MySQL Utilities
  • Logs and threads

Replication is one of the many topics covered in the …

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Showing entries 1 to 10 of 112 10 Older Entries

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