In this tutorial, we’ll show you how to upgrade/update MySQL to a newer version. This tutorial was written and tested for Ubuntu. Recommended reading: How to install MySQL on Ubuntu Before we begin Before we begin with our actual tutorial, this is what you need (to know): As of writing, the latest MySQL release is […]

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I’m always trying different programming exercises in order to learn and grow as a Developer. One of my favorite learning exercises is porting over from one SQL dialect to another, as they all have their own individual features. Having to hack together or mirror non-existent functionality really challenges my thinking, therefore enabling growth and improvement in my query skills. In this post, I share reproducing the same query results using MySQL for queries I first learned of/discovered that were covered using Oracle SQL and specific implementation features…

Image by José Augusto …

Today we are already at the post number ten of the series of articles related to extending MySQL with the Component Infrastructure, the list above will be updated as new articles are published:

• Extending MySQL using the Component Infrastructure – part 1
• Extending MySQL using the Component Infrastructure – part 2: building the server
• Extending MySQL using the Component Infrastructure – part 3: component services
• …

A year ago, I blogged about An Unprivileged User can crash your MySQL Server.  At the time, I explained how to protect yourself against this problem.  A few weeks ago, I revisited this vulnerability in a follow-up post in which I explained the fix, claimed that the MySQL 5.7 default configuration for Group Replication is still problematic, and explained a tuning to avoid the

The MySQL January 2022 releases are now available.

MySQL is a proven, reliable database that is quick to set up easy to maintain, and has outstanding performance. However, that performance can usually be improved with the judicious use of the following tips that are all easy to implement...

The most common issue when using row-based replication (RBR) is replication lag due to the lack of Primary keys.

The problem is that any replicated DML will do a full table scan for each modified row on the replica. This bug report explains it more in-depth: https://bugs.mysql.com/bug.php?id=53375

For example, if a delete is executed on the following table definition:

CREATE TABLE `joinit` (
  `i` int NOT NULL,
  `s` varchar(64) DEFAULT NULL,
  `t` time NOT NULL,
  `g` int NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1

With this amount of rows:

mysql> select count(*) from joinit;
+----------+
| count(*) |
+----------+
|  1048576 |
+----------+

The delete being:

mysql> flush status ;

mysql> delete from joinit where i > 5 and i < 150;
Query OK, 88 rows affected (0.04 sec) …

This post is the nine one of a series of articles on extending MySQL with the Component Infrastructure, the list above will be updated as new articles are published:

• Extending MySQL using the Component Infrastructure – part 1
• Extending MySQL using the Component Infrastructure – part 2: building the server
• Extending MySQL using the Component Infrastructure – part 3: component services
• …

Let's walk through on how to migrate sakila database from Azure for MySQL into Oracle Cloud MySQL Database Service(MDS).

For the migration ,let's use MySQL Shell Utility features

1.       Dump Schema Utility

a.       This will help us to export the schema of Azure for MySQL Instance into Oracle Cloud Object Storage.

2.       Load Dump Utility

a.       This is help us to Import the schema from Object Storage to MySQL Database Service(MDS) at Oracle Cloud .

More info:- https://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-utilities-dump-instance-schema.html

How does Migration Work ?

Suppose …

This post is the eight one of a series of articles on extending MySQL with the Component Infrastructure, the list above will be updated as new articles are published:

• Extending MySQL using the Component Infrastructure – part 1
• Extending MySQL using the Component Infrastructure – part 2: building the server
• Extending MySQL using the Component Infrastructure – part 3: component services
• …