Table modifications are a common task for database administrators. In this blog, I’ll explain how to alter tables online in a controlled manner that does not disrupt application users or cause application downtime.

One of the tools in Percona Toolkit is pt-online-schema-change, a utility that alters the structure of a table without interfering with the reads or writes. The tool creates an empty copy of the table to alter and modify as desired before copying the rows from the original table into the new one.

When the copying is finished, it removes the original table and replaces it with the new one. Any changes made to data in the original tables during the copy process will be reflected in the new table as the tool creates triggers on …

We recently released Read Replica for MySQL HeatWave Database Service. Read Replicas are read-only copies of the MySQL DB system in the same region. When you add Read Replicas, they are automatically distributed accross Availability Domains and/or Fault Domains. Each MySQL DB instance can have up to 18 read replicas. Read Replicas use MySQL Asynchronous […]

MySQL Community Advent Calendar 2022: How to deploy WordPress on OCI with MySQL Database Service and spread the read load to multiple Read Replicas

Oracle recently released Read Replica for MySQL Database Service (also known as MySQL HeatWave, with or without the use of HeatWave accelerator for OLTP and OLAP).

Read Replicas are read-only copies of the MySQL DB system in the same region. When you add Read Replicas, they are automatically distributed accross Availability Domains and/or Fault Domains.

Each MySQL DB instance can have up to 18 read replicas.

Read Replicas use MySQL Asynchronous Replication with parallel workers. And when you create the first Read Replica, a Read Replica Load Balancer is created, which distributes read traffic among the read replicas.

Not all shapes are compatible with Read Replicas, the …

I’ve said it before and I’ll say it again; I can only hope you enjoy reading the OpenLampTech developer newsletter as much as I do. Once again this week we have a fantastic newsletter for you (and me). Enjoy and please share the publication to help spread the word that OpenLampTech is the media coverage for MySQL, PHP, and the LAMP stack landscapes!

The Newsletter for PHP and MySQL Developers

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In OpenLampTech issue #56, we have curated and original content covering:

• A fantastic developer Interview
• 7 …

MySQL Community Advent Calendar 2022 - How to generate MySQL slow query log in OCI for MySQL HeatWave Database Service using Fn infrastructure - part 2

MySQL HeatWave Best Practices Series: Schema Design

MySQL Community Advent Calendar 2022 - How to generate MySQL slow query log in OCI for MySQL HeatWave Database Service using Fn infrastructure

MySQL Community Advent Calendar 2022 - How can you analyze queries in MySQL Database Service in OCI using Performance_Schema

In the previous part, we created our application and our 2 functions. Now we need to create an API Gateway to be able to call these functions from outside OCI. Using a third party scheduler, our laptop, etc… Before creating the gateway, we need to create some policy to allow the API Gateway to call […]