When I add a row that references another table (in a transaction), MySQL seems to lock the whole row that's being referenced. This prevents updates of ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlock-detection.html InnoDB is aware of table locks if innodb_table_locks = 1 (the default) and ...
I want to change my cluster to mariadb innodb galera cluster and need to know does this replication support in memory tables bbefore this i have mysql ...
I have a table defined in this way: CREATE TABLE `measure` ( `measureId` bigint NOT NULL, `sensorId` int NOT NULL, `timestamp` bigint NOT NULL, ...
I'm using MySQL InnoDB, one of the most important tables has over 700 million records with totally 23 actively used indexes. I am trying to delete th ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlocks-handling.html When modifying multiple tables within a transaction, or different sets of r ...
I'm pretty new to modeling databases, this is for a browser game. Basically a player can spend resources to build spaceships. There are, let's say, 3 ...
I've some ibd and frm files. Now I want to import those into mysql database. But its not working. I tried with mysqlfrm but it showing I installed ...
After several studies I see that MySQL applies gap blocking where it is not necessary. That's why I want to ask this question, is it something determi ...
Was running last time it was used, upon rebooting mysql keeps restarting itself. Starting the server with the following to get output logs. mysql.se ...
I would like to know in depth around how exactly JSON and TEXT are stored in MySQL InnoDB. I have heard and read in some places that for these types o ...
I need a example, please What do you mean by applying the lock to a pseudo-record? https://dev.mysql.com/doc/refman/8.0/en/innodb-locking.html#innod ...
I am using mysql innodb database. I thought I had understood the locking mechanism of mysql. But I found an example, which conflicts with my understan ...
Window 1: Window 2: Original table: Gap locks don't appear, they should be displayed because I checked and it prevents me from INSERT for exa ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-locking.html#innodb-record-locks Record Locks A record lock is a lock on an index record. For exa ...
I have the following query, and I wanted to use the diagram to CONFIRM IF I UNDERSTAND IT RIGHT: "pk" is the primary key I am having trouble und ...
Our system was down recently as the database had exceeded the max_connection. We are using AWS RDS - Aurora MySQL. Checking Performance Insights, we ...
I'm having trouble making a search on a fairly large (5 million entries) table fast. This is innodb on MariaDB (10.4.25). Structure of the table my_ ...
I use bitnami/mysql to use mysql in k8s. I used this command: but I got error : After that I use diagnosticMode and execute this command (/opt/b ...
I have 2 servers (two connections), the problem is that when server A writes a directory and a user in server B requests the directory at the same tim ...