Meet MariaDB 10.4 Support in MySQL Database Tools

We are glad to announce the release of the updated dbForge tools for MySQL. To ensure that the users of our MySQL tools can work with the most up-to-date database engines, we keep expanding connectivity options for our MySQL management tool. For this release, we have implemented support for the latest MariaDB 10.4. in  the […]

We are thrilled to inform our MySQL users that fresh and new dbForge Studio for MySQL, v8.1 has been just rolled out! To ensure that the users of dbForge Studio for MySQL can work with the most up-to-date database engines, we keep expanding connectivity options for our MySQL management tool. In this version, we have […]

In this blog post I’ll be starting another series with MySQL on the Oracle Cloud, but focusing this  post on IaaS initial setups.  In “the series” I’ll review at a high level, building an InnoDB Cluster on IaaS Compute in the Oracle Cloud, mostly focusing certain cloud characteristics as they pertain to building, staging and managing… Read More »

Please join Percona’s Chief Technology Officer, Vadim Tkachenko, as he presents How to Rock with MyRocks on Thursday, January 17th at 10:00 AM PDT (UTC-7) / 1:00 PM EDT (UTC-4).

Register Now

MyRocks is a new storage engine from Facebook and is available in Percona Server for MySQL. In what cases will you want to use it? We will check different workloads and when MyRocks is most suitable for you. Also, as for any new engine, it’s important to set it up and tune it properly. So, we will review the most important settings to pay attention to.

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I already covered some information related to users password recently (see this post and this one).

Today, let’s have a look at the password management features available in MySQL 8.0.

We will cover the password management in MySQL in 5 sections:

• validation
• expiration
• reuse policy
• verification policy
• dual active passwords

Validation

Password validation means that a new password must comply with some policy to be sure the password is not weak. This job is handled by a component in MySQL 8.0: validate_password.

To be able to use that component, you need to install it. You can verify if it’s …

It’s a few weeks after AWS re:Invent 2018 and my head is still spinning from all of the information released at this year’s conference. This year I was able to enjoy a few sessions focused on Aurora deep dives. In fact, I walked away from the conference realizing that my own understanding of High Availability (HA), Disaster Recovery (DR), and Durability in Aurora had been off for quite a while. Consequently, I decided to put this blog out there, both to collect the ideas in one place for myself, and to share them in general. Unlike some of our previous blogs, I’m not focused on analyzing Aurora performance or examining the architecture behind Aurora. Instead, I want to focus on how HA, DR, and Durability are defined and implemented within the Aurora ecosystem.  We’ll get just deep enough into the weeds to be able to examine these capabilities alone.

Aurora MySQL – What is it?

We’ll start with a simplified …

ProxySQL 1.4.13, released by ProxySQL, is now available for download in the Percona Repository along with an updated version of Percona’s proxysql-admin tool.

ProxySQL is a high-performance proxy, currently for MySQL and its forks (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created ProxySQL for DBAs as a means of solving complex replication topology issues.

The ProxySQL 1.4.13 source and binary packages available at https://percona.com/downloads/proxysql …

It seems, that this is a question that regularly shows up in forums or stackoverflow.

To start, let’s highlight the fact that in MySQL 8.0 it’s not any more possible to create a user directly from the GRANT command (ERROR 1410 (42000): You are not allowed to create a user with GRANT).

This means that to grant some privileges, the user must be created first.

Let’s create a user ‘user1‘ with ‘ChangeMe‘ as password that the user will have to change:

mysql> create user 'user1' identified by 'ChangeMe' password expire;
Query OK, 0 rows affected (1.35 sec)

Let’s try to connect to MySQL using that new created user:

$ mysql -u …

Here are routines that can handle date arithmetic on BC dates, Julian day functions, and simulation of Oracle's support of old-style-calendar dates -- including simulation of an Oracle bug. So the routines are good for extending the range of useable dates, compact storage, and import/export between DBMSs that have different rules.

If you need to refresh your understanding of dates, read our old-but-lovely article first: The Oracle Calendar.

I wrote the main routines with standard SQL so they should run on
any DBMS that supports the standard, but tested only with
MySQL and MariaDB. (UPDATE on 2019-02-04: corrections were needed with HSQLDB, see the comments.)

ocelot_date_to_julianday

  Return number of days since 4713-01-01, given yyyy-mm-dd [BC] date

ocelot_date_validate

  Return okay or error, given yyyy-mm-dd BC|AD date …