#performance_schema — Public Fediverse posts

MySQL 8 and Replication Observability
Many of us, old MySQL DBAs used Seconds_Behind_Source from SHOW REPLICA STATUS to find out the status and correct execution of (asynchronous) replication.

Please pay attention of the new terminology. I'm sure we've all used the old terminology.

However, MySQL replication has evolved a lot and the repli
https://lefred.be/content/mysql-8-and-replication-observability/
#80 #GroupReplication #HeatWave #MySQL #Performance_Schema #Replication #SYS

Query and Transaction size in MySQL
Some times it's important to know the size of a transaction, especially when you plan to migrate to a HA solution where by default transactions have a limited size to guarantee an optimal behavior of the cluster.

Today we will see the different possibilities to have an idea of the size of transactions.

First we need to split the t
https://lefred.be/content/query-and-transaction-size-in-mysql/
#8.0 #MySQL #MySQL8.0 #MySQLShell #Performance_Schema

How to get client’s IP address when using MySQL Router ?
When you connect to a server (or cluster) using a TCP proxy level 7, also referred to as an application-level or Layer 7 proxy (highest level of the OSI model), the application doesn't connect directly to the back-end server(s). The proxy usually understands the p
https://lefred.be/content/how-to-get-clients-ip-address-when-using-mysql-router/
#8.0 #HA #InnoDBCluster #InnoDBReplicaSet #MySQL #MySQL8.0 #Performance_Schema #Router

MySQL Database Service – find the info: part 4 – connections
As a MySQL DBA, you like to know who is connected on the system you manage. You also like to know who is trying to connect.

In this article, we will discover how we can retrieve the information and control who is using the MySQL DB instance we launched in OCI.

https://lefred.be/content/mysql-database-service-find-the-info-part-4-connections/
#8.0 #Cloud #Information_Schema #MDS #MySQL #MySQL8.0 #OCI #Performance_Schema

MySQL Database Service – find the info: part 2 – disk space utilization
This article is the second of the new series dedicated on how a DBA can find the info he needs with MySQL Database Service in Oracle Cloud Infrastructure.

The first article was dedicated on Backups, this one is about Disk Space Utilization.

This
https://lefred.be/content/mysql-database-service-find-the-info-part-2-disk-space-utilization/
#8.0 #Cloud #HeatWave #MDS #MySQL #MySQL8.0 #OCI #Performance_Schema

MySQL Database Service – find the info: part 1 – backups
In this new series of articles we will explore the different sources of information available when using MySQL Database Service on OCI to effectively perform your daily DBA job.

Of course there is way less things to take care of, like backups, upgrades, operating system and hard
https://lefred.be/content/mysql-database-service-find-the-info-part-1-backups/
#8.0 #Cloud #HeatWave #MDS #MySQL #MySQL8.0 #OCI #Performance_Schema