There are several ways you can try to speed up a MySQL replica. Here are some ideas:

When performing physical backup on system that are heavily used, it can happen that the backup speed cannot keep up with the redo log generation. This can happen when the backup storage is slower than the redo log storage media and this can lead in inconsistency in the generated backup. MySQL Enterprise Backup (aka MEB) […]

What is MySQL InnoDB Redo Log Archiving ? How does it work ? Discover this important MySQL InnoDB feature reading this blog post.

In this article we will see how to perform a live migration from Azure/MySQL to OCI/MySQL HeatWave. As Azure allows public connections directly to the database, this is what I will use to migrate and replicate the data between both clouds. Also, since this content is focused on data migration, I won’t explore all the […]

Live Migration from Azure Database for MySQL to MySQL HeatWave Database Service on Oracle Cloud (OCI)

Recently, I wrote several articles on how to load data from CSV files to migrate from different databases to MySQL Database Service: We saw that the most complicate is to write the CREATE TABLE statement that matches the data. I also received some questions about how to generate the table’s definition when only the CSV […]

MySQL Shell is a command-line interface for interacting with MySQL servers. It allows you to run SQL queries and perform various tasks related to MySQL databases. In this post we will see how we can use MySQL Shell and a plugin to generate table's create statement from a CSV file containing records.

Space constraint has been an endless and painstaking process for many of us, especially in systems that have a high number of transactions and data growth exceeding hundreds of GBs in a matter of days. In this blog, I will share a solution to remove this space and remove rows from tables in a few seconds regardless of the size of a table without causing any additional load on the database using table partitions.

The first approach that comes to anyone’s mind for deleting the row is using a DELETE query in SQL. Suppose, one wants to delete rows from a table that are older than one year—the query for such operations would be like this:

DELETE FROM salaries WHERE from_date <DATE_SUB(NOW(),INTERVAL 1 YEAR);

The above query is pretty straightforward but there are a few caveats:

• Server business will grow exponentially and could impact the usual traffic on the server.
• To speed up the above query …

Recently, we performed a database engine major version upgrade in one of our customers’ environments from MySQL 5.7.26 to 8.0.27. After this version upgrade, we experienced issues with backups and replication for one of the nodes.

In this article, I will explain these issues in detail and recommend a way to take backups from a replication environment.

To begin with, we upgraded all the database nodes from 5.7.26 to 8.0.27 and as a recommended way we have a backup set-up from one of the replica nodes. Physical backups are being taken using Percona XtraBackup (PXB) so it does not lock the database during the backup.

With MySQL 5.7, a backup was taken using PXB 2.4. Due to the new data dictionaries, redo log and undo log in MySQL 8.0, we also upgraded PXB to 8.0.27 to avoid …

Importing CSV files into a MySQL HeatWave Database Service instance is very easy and efficient thanks to MySQL Shell. It can be used to import data from RedShift as we describe in this post.