In this post we’ll review how MySQL triggers can affect queries.

Contrary to what the documentation states, we can activate triggers even while operating on views:

https://dev.mysql.com/doc/refman/5.7/en/triggers.html

Important: MySQL triggers activate only for changes made to tables by SQL statements. They do not activate for changes in views, nor by changes to tables made by APIs that do not transmit SQL statements to the MySQL server.

Be on the lookout if you use and depend on triggers, since it’s not the case for updatable views! We have reported a documentation bug for this but figured it wouldn’t hurt to mention this as a short blog post, too. The link to the bug in question is here:

We are pleased to announce that MySQL Enterprise Monitor 3.3.4 is now available for download on the My Oracle Support (MOS) web site. This is a maintenance release that includes a few new features and fixes a number of bugs. You can find more information on the contents of this release in the change log.

You will find binaries for the new release on My Oracle Support. Choose the "Patches & Updates" tab, and then choose the "Product or Family (Advanced Search)" side tab in the "Patch Search" portlet.

Important: MySQL Enterprise Monitor (MEM) 3.4 offers many significant improvements over MEM 3.3 and we highly recommend that you consider upgrading. More information on MEM 3.4 is available here:

• …

We are pleased to announce that MySQL Enterprise Monitor 3.2.8 is now available for download on the My Oracle Support (MOS) web site. This is a maintenance release that includes a few new features and fixes a number of bugs. You can find more information on the contents of this release in the change log.

You will find binaries for the new release on My Oracle Support. Choose the "Patches & Updates" tab, and then choose the "Product or Family (Advanced Search)" side tab in the "Patch Search" portlet.

Important: MySQL Enterprise Monitor (MEM) 3.4 offers many significant improvements over MEM 3.2 and MEM 3.3 and we highly recommend that you consider upgrading. More information on MEM 3.4 is available here:

• …

In a world moving towards Unicode and UTF-8, a lot of applications still use some one-byte character set. And since one-byte characters usually accepts any byte in the range 0x00-0xFF it often works well to store and retrieve any data in such character strings, e.g.…

Hope you have been following our recent webinars on MySQL, Galera Cluster, AWS monitoring and more.

We are coming up with a webinar series in association with Eric Vanier, a leading MySQL expert consultant. The series will provide a step-by-step process to optimize MySQL database performance.

This webinar series is for everyone who is looking for ways to monitor their MySQL databases, simplify the process to manually analyze queries and achieve faster issue resolution time.

Eric Vanier will focus on key problem areas that are faced by DBAs and Shree will provide a solution-driven demonstration to overcome issues while monitoring the database performance. To make it simple, the series will comprise of three parts:

Part – 1: MySQL Performance Tuning
26 June; 10:00 am Eastern time

Troubleshooting a MySQL …

Hope you have been following our recent webinars on MySQL, Galera Cluster, AWS monitoring and more.

We are coming up with a webinar series in association with Eric Vanier, a leading MySQL expert consultant. The series will provide a step-by-step process to optimize MySQL database performance.

This webinar series is for everyone who is looking for ways to monitor their MySQL databases, simplify the process to manually analyze queries and achieve faster issue resolution time.

Eric Vanier will focus on key problem areas that are faced by DBAs and Shree will provide a solution-driven demonstration to overcome issues while monitoring the database performance. To make it simple, the series will comprise of three parts:

Part – 1: MySQL Performance Tuning
26 June; 10:00 am Eastern time

Troubleshooting a MySQL …

MySQL is arguably the most popular and common RDBMS. The last major release was MySQL 5.7 back in 2013.

As of today, several development milestones were declared for MySQL v8.0, but there is no official release available yet.

Even though there is no official software release to download and use yet, the list of features for MySQL 8.0 was officially announced, which makes it a great point in time to talk about it and share these great enhancements with you.

So without further ado, let’s dive into listing the new comers to MySQL 8.0:

• Roles – Very exciting feature that allows to create roles in MySQL server and assign specific privileges to them. These roles can be assigned to users. So from now you don’t have to remember which permissions a programmer from team X needs, and should a QA from team Y needs privilege Z. Also, it’s very easy to set …

Disclaimer: This post is aimed to you, the curious developer, sys-admin, technologist, whatever-title-you-use. DO NOT run the following lines on production. Not even in a stable environment, do this if you don’t care about the outcome of the current data.

If you want to keep up with the newest MySQL developer milestones I have news for you: there is no upgrade available for milestone versions. The way to go is to remove old version and install new one, according to their website:

Upgrades between milestone releases (or from a milestone release to a GA release) are not supported. For example, upgrading from 8.0.0 to 8.0.1 is not supported, as neither are GA status releases.

So if you, like me, had the 8.0.0 version and want to test the 8.0.1 (alhtough 8.0.3 milestone is already in development) …

This tutorial explains how to setup and configure MySQL multi-master replication on Oracle Linux. Please note that even though the configuration is made under Oracle Linux, yet the steps and configuration are mainly the same to CentOS and Red Hat Linux.

This Log Buffer Edition includes blog posts from Oracle, SQL Server and MySQL.

Oracle:

In 12.2 you can: Convert a simple table to partitioned with multi-column automatic list partitions, partially indexed, with read only segments, filtering out unwanted data, online in one operation.

12c How to UN Expire Password for CDB Users

rman auxiliary (for duplicate)

How long will Oracle APEX remain an included feature of the Oracle Database?

How to easily delete files …