A quick configuration change may do the trick in improving the performance of your AWS RDS for MySQL instance. Here, we will discuss a notable new feature in Amazon RDS, the Dedicated Log Volume (DLV), that has been introduced to boost database performance. While this discussion primarily targets MySQL instances, the principles are also relevant to […]

In this article, we will demonstrate how to achieve asynchronous replication automatic source failover when our replica is a Percona Server for MySQL (PS) and the source is a Percona XtraDB Cluster (PXC) cluster, using virtual IP (VIP) managed by Keepalived.Let us consider our architecture below with async replication from PXC to Percona Server for […]

Ensuring the security and resilience of your data hinges on having a robust backup strategy, and Percona XtraBackup (PXB), our open source backup solution for all versions of MySQL, is designed to make backups a seamless procedure without disrupting the performance of your server in a production environment.When combined with the versatility of Docker containers, […]

During an interview or while having general discussions, I have found some funny responses that can be easily classified as “Wrong Answers,” but at times, they’re thought-provoking or involve a deep meaning within. This blog is regarding some of the usual MySQL database conversations and responses, which can appear “wrong” or “funny,” but there’s actually […]

Oracle recently made their quarterly releases with MySQL 8.0.35 and MySQL 8.2. This blog post is a quick look at the release notes to see what these new versions bring to the community. You’ll want to keep an eye on the deprecations in particular because some long-accepted behavior, including wildcards, will change eventually.We get 83 […]

This blog was originally published in January 2021 and updated in November of 2023.As businesses and applications increasingly rely on MySQL databases to manage their critical data, ensuring data reliability and availability becomes paramount. In this age of digital information, robust backup and recovery strategies are the pillars on which the stability of applications stands. […]

This blog post discusses using the [crayon-659c2fe27b13a472295750-i/]  command with the safety option [crayon-659c2fe27b141470126814-i/]  when you do not have enough disk space to store two datasets.In my previous blog post on the [crayon-659c2fe27b142478330007-i/]  command, The MySQL Clone Plugin Is Not Your Backup, I mentioned that using the option [crayon-659c2fe27b143176725038-i/]  helps to avoid situations where you need to re-initialize […]

Visual Studio Code (VS) supports memory dump debugging via C/C++ extension: https://code.visualstudio.com/docs/cpp/cpp-debug#_memory-dump-debugging. When MySQL generates a core file, the VS code simplifies the process of debugging. This blog will discuss how to debug the core file in VS code.Installing c/c++ extensionWe need to install the c/c++ extension. Here are the instructions for doing so. In […]

A common practice among DBAs and developers is to copy table data and .frm files from the data dictionary. They often set up batch jobs to automate the recovery of these tables. This capability is also utilized in disaster recovery scenarios, where individuals well-versed in .frm files can reconstruct their metadata as needed.

In MySQL 8.0, the information is presented within serialized objects within the dictionary. In the case of InnoDB tablespaces, this information is incorporated into the tablespace itself, creating a fusion of metadata and data primarily to enhance performance. MySQL writes a .sdi file to accommodate the serialized dictionary information for storage engines that lack support for this functionality.

Purpose of .sdi files

Serialized dictionary information (SDI) files store serialized metadata about various database objects, such as tables, indexes, and other schema-related details. This serialized data …

This blog post discusses roles in MySQL 8.0, which are named collections of privileges. Like user accounts, roles can have privileges granted and revoked as required.

Typically, we have multiple users with the same set of privileges. Previously, the only way to grant and revoke privileges to multiple users was to change the privileges of each user individually, which was time-consuming. To make it easier, MySQL provided a new object called role. A role is a named collection of privileges.

Here are the primary SQL commands that we will be discussing in relation to managing MySQL roles:

CREATE ROLE and DROP ROLE create and remove roles.
GRANT and REVOKE assign privileges to revoke privileges from user accounts and roles.
SHOW GRANTS displays privilege and role assignments for user accounts and roles.
SET DEFAULT ROLE specifies which account roles are active by default.
SET ROLE changes the active roles within the current session.
The …