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Displaying posts with tag: Oracle (reset)
Licensing Oracle in a public cloud: the CPU calculation impact

First of all a disclaimer: I don’t work for Oracle nor do I speak for them. I believe this information to be correct, but for licensing questions, Oracle themselves have the final word.

With that out of the way, followers of this blog may have seen some of the results from my testing of actual CPU capacity with public clouds like Amazon Web Services, Microsoft Azure, and Google Compute Engine. In each of these cases, a CPU “core” was actually measured to be equivalent to an x86 HyperThread, or half a physical core. So when provisioning public cloud resources, it’s important to include twice as many CPU cores as the equivalent …

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Install Ruby on Fedora

I use a Fedora 20 VM image to teach Oracle and MySQL technology. Last week, I expanded the Fedora VM image to support a full LAMP stack. This blog shows you how to install Ruby on Fedora and successfully generate the Rails gems.

Connect as the root user and use yum to install the libraries. My approach is by library or small groups. Naturally, you start with the ruby library.

yum install ruby

You will see the following:

Loaded plugins: langpacks, refresh-packagekit
mysql-connectors-community                                  | 2.5 kB  00:00     
mysql-tools-community                                       | 2.5 kB  00:00     
mysql56-community                                           | 2.5 kB  00:00     
pgdg93                                                      | 3.6 kB  00:00     
updates/20/x86_64/metalink …
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MySQL shell prompt vs MongoDB shell prompt

Recently Todd Farmer shared an interesting story about the mysql command line prompt in MySQL 5.7: how it was changed to provide more context and why the change was finally reverted. This made me think that after using the command line client for MongoDB for awhile, I would love seeing a much more modern mysql shell prompt. Here are a few examples of what a modern command line client can do.

Add dynamic information to the prompt

If you use replication with MongoDB, you have probably noticed a nice feature of the prompt: it is replication aware. What I mean is that for a standalone instance, the prompt is simply:


When you configure this instance to be the primary of a replica set named RS, the prompt automatically becomes:


and for secondaries, you will see:

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Renaming tables with MySQL Enterprise Backup 3.12.0


MySQL Enterprise Backup 3.12.0 (MEB) introduces a new feature for restoring an InnoDB table from a backup. Now it is possible to rename the table during restore. This is useful when the user wants to restore a table from a backup without overwriting the existing version of the table in the database.

The following example illustrates how the renaming feature could be used.  Suppose that the DBA has deleted three rows from a table T1 by mistake and he now wishes to get them back from a backup. He wants to leave the database online and to restore the 3 deleted rows from a TTS backup (a backup created with the --use-tts option) that contains the table T1.  He can do this with this feature in three steps:

  1. He restores with MEB the table T1 from a TTS backup renaming it to T2.

  2. He uses MySQL client to issue SQL statements to …
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Distributing innodb tables made simpler!

With the support for cloud backups in MEB, distributing innodb tables across multiple MySQL instances has become easier.

1. Backup - take a cloud(Amazon S3) backup of the tables to be shared using the --use-tts=with-full-locking option.

./mysqlbackup \
--host=localhost --user=mysqluser --protocol=TCP --port=3306 \
--cloud-service=s3 --cloud-aws-region=us-east-1 \
--cloud-bucket=mebbackup –cloud-object-key=items.img \
--cloud-access-key-id=<access-key> --cloud-secret-access-key=<secret-key> \
--include-tables=^mycompany\.items.* --use-tts=with-full-locking \
--backup-dir=/tmp/bkups/backupdir --compress --backup-image=- …

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MySQL Enterprise Backup 3.12.0 has been released

MySQL Enterprise Backup team is excited to announce the new release of MySQL Enterprise Backup (MEB) 3.12.0.

 MEB 3.12.0 focuses on enhancing the capabilities of the product that would be very useful to the database administrators.

New functionality added

Support for Open Stack Object Storage

In the last release of MEB, we added cloud support of Amazon S3 to do backups and restore from MEB. Now in MySQL Enterprise Backup 3.12.0, we have added cloud backup and restore using OpenStack Object Storage ("Swift") 1.0.
Authentication can be handled either through Swift's own TempAuth authentication system or the OpenStack Identity Service (Keystone) 2.0.

 A number of new command options have been introduced to support the OpenStack Object Storage. Details of Cloud Storage Options are available …

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MySQL 5.7.6 is out. Be prepared for big changes

Today Oracle released MySQL 5.7.6 milestone 16. With this, MySQL 5.7 has been in development for over 2 years.
Compared to MySQL 5.6, the changes are quite extensive. The main effort of the team has been focused on speed, with performance reportedly improved from 2 to 3 times compared to previous releases.
A full list of what is new would take too much space here, but I would like to mention some key points:

  • Oracle has spent a considerable amount of energy in the improvement of MySQL security and safety. You will see many new features, but even more old features that were deprecated and more that were removed after deprecation in 5.6.
  • The installation process has been changing in every …
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MySQL for Excel 1.3.4 has been released

The MySQL Windows Experience Team is proud to announce the release of MySQL for Excel version 1.3.4. This is a maintenance release for 1.3.x. It can be used for production environments.

MySQL for Excel is installed using the MySQL Installer for Windows which comes in 2 versions:

  • Full (150 MB) which includes a complete set of MySQL products with their binaries included in the download
  • Web (1.5 MB - a network install) which will just pull MySQL for Excel over the web and install it when run.

You can download MySQL Installer from our official Downloads page at The MySQL for Excel product can also be downloaded by using the product standalone installer found at this link …

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Connector/Python 2.1.1 Alpha released with C Extension

MySQL Connector/Python 2.1.1 took a while to release and that was because we had to add some more packages which contains the optional C Extension. Note that this is still Alpha and we want you guys to report any problems and requests.

The Connector/Python C Extension was added because in certain situations, for example reading a huge result set, can take a long time with pure Python. That’s why we choose to interface with Connector/C (libmysqlclient).

Note: Pure Python is still default and it will be kept that way!

Installing Connector/Python 2.1 didn’t change much:

shell> python install

If you’d …

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Increasing Cloud Database Efficiency – Like Crows in a Closet

In Mo’ Data, Mo’ Problems, we explored the paradox that “Big Data” projects pose to organizations and how Tokutek is taking an innovative approach to solving those problems. In this post, we’re going to talk about another hot topic in IT, “The Cloud,” and how enterprises undertaking Cloud efforts often struggle with idea of “problem trading.” Also, for some reason, databases are just given a pass as traditionally “noisy neighbors” and that there is nothing that can be done about it. Lets take a look at why we disagree.

With the birth of the information age came a coupling of business and IT. Increasingly strategic business projects and objectives were reliant on information infrastructure to provide information storage and retrieval instead of paper and filing cabinets. This was the dawn of the database and what gave rise to companies like Oracle, Sybase and MySQL. With the appearance of true Enterprise Grade …

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