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[BUG] Stopping Purge/Resuming Purge in Error Logs After Upgrade to MySQL 5.7.40

We had a couple of cases where clients reported that the MySQL error log was flooded with the below note:

2023-01-18T13:07:56.946323Z 2 [Note] InnoDB: Stopping purge
2023-01-18T13:07:56.948621Z 2 [Note] InnoDB: Resuming purge
2023-01-18T13:08:27.229703Z 2 [Note] InnoDB: Stopping purge
2023-01-18T13:08:27.231552Z 2 [Note] InnoDB: Resuming purge
2023-01-18T13:08:28.581674Z 2 [Note] InnoDB: Stopping purge

One of my colleagues Sami Ahlroos found that whenever we trigger a truncate on any table, the function is stopping the purge and then resuming it once it has found it stopped.

Below are the steps to reproduce.

  1. Log verbosity needs to be set to 3 (the default value)
mysql> show variables like 'log_error_verbosity%';
+---------------------+-------+
| Variable_name       | Value |
+---------------------+-------+
| …
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Substring in MySQL – Syntax and Examples

In this article, we are going to talk about the MySQL SUBSTRING() function with its variations. Here, you will find a detailed guide with the basic syntax and examples of how to use this function. Moreover, we will demonstrate the benefits of MySQL coding in a handy IDE - dbForge Studio for MySQL that can help you save a lot of time and energy.

The post Substring in MySQL – Syntax and Examples appeared first on Devart Blog.

OpenLampTech issue #62 – Substack Repost

Welcome back to this week’s OpenLampTech developer newsletter. I appreciate your interest and reading. Thank you! Get ready for more PHP, MySQL, and LAMP stack content.

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

In OpenLampTech issue #62, we have content covering:

  • WordPress certification
  • SQL constraints
  • WooCommerce customizations
  • Contact form 7 blocks
  • And much much more

Your continued support for the OpenLampTech publication means so much. Show your support with a …

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What should be monitored on a busy Database/MysQL server?

On a busy MySQL server, some key metrics that should be actively monitored include:

preFOSDEM MySQL Days 2023 – the Agenda

As you know, before FOSDEM, the MySQL Community Team organizes a 2 days conference in Brussels. During these preFOSDEM MySQL Days, attendees will have the opportunity to learn more about their favorite database from Oracle’s MySQL teams and selected professionals from the MySQL community. This popular event is organized for and with the MySQL Community. […]

preFOSDEM MySQL Days 2023 – the Agenda

Just before FOSDEM, the MySQL Team is organizing a 2 days conferences for and with the MySQL Community. Here is the agenda.

Help! I Am Out of Disk Space!

How can we fix a nasty out-of-space issue leveraging the flexibility of Percona Operator for MySQL?

When planning a database deployment, one of the most challenging factors to consider is the amount of space we need to dedicate to data on disk.

This is even more cumbersome when working on bare metal, as it is more difficult to add space when using this kind of solution with respect to the cloud.

When using cloud storage like EBS or similar, it is normally easy(er) to extend volumes, which gives us the luxury to plan the space to allocate for data with a good grade of relaxation. 

Is this also true when using a solution based on Kubernetes like Percona Operator for MySQL? Well, it depends on where you run it. However, if the platform you choose supports the option to extend volumes, K8s per se gives you the …

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Where you can find MySQL in January-May 2023

Our pleasure to announce a list of conferences where you can find MySQL at from January to May 2023. Please find the list below and make an appointments in your calendars: We are looking forward seeing you in person at the physical shows as well as you are more than welcome to come and listen […]

Where you can find MySQL in January-May 2023

List of conferences with MySQL during January-May 2023

Using Oracle APEX with MySQL Heatwave Service for Data Visualisation and Reporting

 

Using ORACLE APEX to Build and Visualize and Analyse MySQL Database

 Main objective of this blog is to connect MDS with APEX tool and visualize and get insights of MySQL data with low code solution called Oracle APEX. 

Below is the glimpse of topic to be covered in this blog 

1. What is all about Oracle Apex 

2. What are benefit of using Oracle Apex 

3. Installation and Configure Oracle APEX with MDS 

4. Conclusion 


Let’s get started… 


What is all about Oracle Apex ? 


It is database centric web application development framework which you can use to Develop desktop & mobile web apps ,visualize and maintain data, leverage SQL skills and database capabilities. 
Basically,Oracle APEX (APEX) is a low-code development platform that enables you …

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