MySQL Server Crash with Exception Code 0xc0000005 (no replies)
Hello MySQL community, I'm encountering a persistent issue with my MySQL server crashing unexpectedly, and I'm seeking assistance in diagnosing and resolving this problem. The server crash is...
View Articlemysql got exception 0x16 (no replies)
OS: Windows Server 2016 WordPRess: 6.3.2 Mysqld: version: 8.0.28.0 I just want a confirmation if this is similar to an older post about "exception 0x16", and if I need to install 8.0.29. The error log...
View ArticleCREATE TABLE ENGINE=INNODB DATA DIRECTORY = '/external/directory' (no replies)
CREATE TABLE ENGINE=INNODB DATA DIRECTORY = '/external/directory' Cuando requiero crear una tabla de manera externa en Mysql 8, me sale el siguiente error: Error Code: 1030. Got error 168 - 'Unknown...
View ArticleMysql 5.7 estimate alter table work (no replies)
Hi Is there any way to estimate the work needed for an ALTER TABLE on a table? I am using Mysql 5.7 on AWS RDS. Just wonder if something like "EXPLAIN" exists for "ALTER TABLE" The table has a size of...
View ArticleCan I get InoDB to split tables by size? (no replies)
OS: FreeBSD 14.0-RELEASE MySQL: MySQL 8.0.32_3 FS: ZFS I am working on a new database. The schema consists of a single table and nothing else. I know the table will grow at a rapid and constant rate;...
View ArticleDatabase connection problem. (no replies)
Hi I'm getting Database connection problem, while trying to access. Unable to start mysql .. error is as below.. how can i troubleshoot this issue ? i am running windows7.. 2024-01-03 15:19:20 4692...
View ArticleRename table taking too long on MySql 8 (no replies)
We recently upgraded from MySql 5.7 to 8 and have run into this issue. We have a rename table operation that runs every minute. It used to take a fraction of a second, but now it takes over 6.0...
View ArticleUnexpected inconsistent read during a transaction (no replies)
I've encountered some very unexpected behavior in the InnoDB engine using the REPEATABLE READ isolation level. My application begins a transaction, reads a single row, updates a field in that row, and...
View ArticleMySQL restarts - mysqld got signal 11 ; (no replies)
We host a web app using MySQL on AWS RDS. We recently upgraded to MySQL8 (8.0.28) and since then we are seeing the server restart itself approximately every 5-7 days with the following error. ========...
View ArticleIncorrect string value (no replies)
I have a table in an InnoDB database. The character set is utf8mb4 and the collation is utf8mb4_0900_ai_ci. I have a field in the table defined as longtext, whose collation is also utf8mb4_0900_ai_ci....
View ArticleMySQL 8.0.35 crashes (no replies)
Hi All The application is performing a read query but the database is crashing and not recovering. The force_innodb_recovery flag has to be set to 2 inorder to recover. The operating system has enough...
View ArticleMySQL 8.0.35 crashes during startup (no replies)
We are facing problem where MySQL service crashes with below error. ‘binlog_transaction_compression’ is also turned off in our setup. We are able to force recovery. Can someone tell us the reason for...
View ArticleMySQL 8.4 LTS – new production-ready defaults for InnoDB (no replies)
https://lefred.be/content/mysql-8-4-lts-new-production-ready-defaults-for-innodb/
View ArticleWhy is this deadlock happening? (no replies)
I see that one microsservice is causing this deadlock bellow but couldn't find the root cause. I wouldn't expect this to happen sice 2 different threads are executing a replace command for 2 different...
View ArticleInformations and tune for Purge system! (no replies)
Hi all, i have some questions about MySQL purge system. I read from the official documentation the purge system is automatically scheduled so i don't need to enable it in some way, but i didn't...
View ArticleReproducing Bug #115113 (no replies)
https://bugs.mysql.com/bug.php?id=115113 Could you pelase try to reproduce the following bug with Linux (amd64)? I think it is present across 8.0.x-8.4.0 codebase, I think it is reproducible on a...
View ArticleNeed help to review a serializability implementation for MySQL Cluster (1 reply)
Hey guys, I've developed a serializability implementation for MySQL Cluster(NDB Cluster) and you are invited to peer-review it for me. I believe it is the fifth one in commercial database systems...
View ArticleTroubleshooting innodb mysql-router containers as they are in a unhealthy...
Hi, I have been facing an issue with my innodb setup of 3 nodes. Each node runs two containers with image mysql/mysql-server:5.7 and mysql/mysql-router:latest. These nodes are VM of an esxi which were...
View Articlemysql buffer pool how monitor (no replies)
The memory size of my server is 128GB with a 4-core processor, and I have configured the MySQL buffer pool to 12GB. Every time when concurrent requests start, I notice that the MySQL service becomes...
View Articleinnodb_buffer_pool (no replies)
Storage pool size parameter: innodb_buffer_pool 1. Understanding the size of the storage pool: When accessing a large amount of data, the time for large amounts of data is not directly related to the...
View Article[ERROR] InnoDB: Database page corruption on disk or a failed file read of...
Hello, I ran into a problem with my MySQL database on a Nvidia Jetson Nano. All of a sudden the database went corrupt with message: [ERROR] InnoDB: Database page corruption on disk or a failed file...
View ArticleDelete With JSON Filling /tmp Space (no replies)
MySQL 8.0.37 statement: DELETE FROM table WHERE datefield<'date'; table has 6 int, date, timestamp, and short (<32) varchar fields and 1 LARGE JSON field. Deleting 2500 records is filling 800M...
View ArticleMySQL execute plan behaves different in Master and Slave (no replies)
I have one MySQL query, and that query is using an index on the master but not using an index on the slave. The query is as simple as SELECT * FROM table1 JOIN table2 ON table1.primary_id =...
View ArticleMySql 5.7 wrong (apparently) value of character_maximum_length (2 replies)
Hi I am trying to analyze a table structure, to understand why ALTER TABLE operations take so long time. My attention comes to longtext and mediumtext columns. One of them, though, has a strange clue...
View ArticleEnhancing MVCC ReadView Scalability (4 replies)
The MVCC ReadView uses a vector to store the list of active transactions. In high-concurrency scenarios, this list can become large, leading to a larger working set. In NUMA environments, both...
View ArticleDeadlock (no replies)
A couple of days ago this deadlock happened on our MySql 5.7 database: ------------------------ LATEST DETECTED DEADLOCK ------------------------ 2024-09-25 11:03:39 0x14b52a06b700 *** (1)...
View ArticleMySQL 8.4.2 MY-013935 IO-layer timeout before wait_timeout was reached. (no...
Hello, we used MySQL 5.7.35 + java 17 web application with connector mysql-connector-j-8.2.0. Application is on different host and running on Windows platform. Database is running on Windows as well....
View Article[GCP Cloud SQL MySQL Upgrade Error] InnoDB Metadata Inconsistency - Unable to...
Hi everyone, We're facing a critical issue during a MySQL upgrade (from version 5.7 to 8.0) on a Google Cloud SQL instance. The upgrade process fails due to metadata inconsistencies in InnoDB, and...
View ArticleHow to debug very slow transactions stuck at "waiting for handler commit"...
- My MySQL Setup: I have a production MySQL 8.0.33 database. All tables use the InnoDB storage engine. The database has been running smoothly for the last 9 months. Size: ~60GB of data and ~200...
View ArticleUpdate of innodb_buffer_pool_instances (no replies)
Dear Team, We are using MySQL 8.0.37 community version and want to update innodb_buffer_pool_instances and other variable too to increase the performance. I edited the my.ini to add entry for...
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