Orphaned idb file (1 reply)
I got a crashed server. I had recover the directory Data with all idb files. Can I restor my databases with that files? Thanks
View ArticleIssue with `ibtmp1` file preventing start up (no replies)
I've been working with MySQL 8 within Ubuntu 18.04 for several weeks without issue. My MySQL installation exists on an external HD. Earlier, I undocked my laptop, then later redocked and wasn't able...
View ArticleUnderstanding InnoDB rw-lock stats (no replies)
https://mysqlonarm.github.io/Understanding-InnoDB-rwlock-stats/
View ArticleLIKE not working as expected (3 replies)
When searching for values containing a backslash, MySQL is not finding the rows as expected. Here's an example: create table t (c varchar(50)) ENGINE=InnoDB DEFAULT CHARSET=utf8...
View Articleupdate queries running slow after colation change (3 replies)
I posted this in another thread here, but this is a better explanation. I have a database that was using latin1_swedish_ci collation. I needed to preform Case sensitive joins. So I modified all the...
View ArticleUpgrade From MySQL 5.7 to 8.20 (1 reply)
I am trying to upgrade from MYSQL server 5.7 to 8.20. I need to increase the innodb_buffer_pool_size to 8G (Default is 8M). Here are the steps I followed: 1. Uninstall MYSql server 5.7 2. Install...
View ArticleUpgrading MySQL 5.7 to 8.x on Windows Datadir path ignored (2 replies)
I tried a lot but without success. I'm using MySQL 5.7 installed in Default dir C:\ I moved the datadirectory to drive D:\Programme\MySQL\Data Everyting fine with 5.7 After upgrading to 8.0 I cannot...
View ArticleMySQL 8.0.20 Performance : The New InnoDB Double Write Buffer in Action (no...
MySQL 8.0.20 Performance : The New InnoDB Double Write Buffer in Action — http://dimitrik.free.fr/blog/posts/mysql-80-perf-new-dblwr.html
View Articlecan I set on DB to Barracuda without effecting the whole shared hosting...
Hi, Now my MySQL uses Antelope as the file format. for another system I need the DB to be set to Barracuda file format. Is there a way to have one DB set to Antelope and another DB set to Barracuda on...
View ArticleMySQL Performance : XFS -vs- EXT4 Story (no replies)
http://dimitrik.free.fr/blog/posts/mysql-80-perf-xfs-vs-ext4.html
View ArticleMySQL Performance : XFS -vs- EXT4 (no replies)
http://dimitrik.free.fr/blog/posts/mysql-80-perf-xfs-vs-ext4.html
View ArticleKEY_BLOCK_SIZE=12 in innodb (1 reply)
Why is it not allowing me to set ROW_FORMAT=COMPRESSED and KEY_BLOCK_SIZE =12 in innodb
View ArticleUbuntu apt update fails (1 reply)
I have a server Ubuntu Linux 20.04, I updated it using the standard Ubuntu update process and recently ran a package update, but am seeing this issue starting mysqld, the log gives me. Server upgrade...
View ArticleInnodb showing high usage 99.7 (1 reply)
Please find our data length and index length # engine, data, indexes, total InnoDB, 471.89 GB, 308.47 GB, 780.36 GB CSV, 0.00 GB, 0.00 GB, 0.00 GB MEMORY, 0.00 GB, 0.00 GB, 0.00 GB TOTALS, 471.89 GB,...
View ArticleMySQL 8.0: Keep an eye on your auto_increment values (no replies)
https://lefred.be/content/mysql-keep-an-eye-on-your-auto_increment-values/
View ArticleMySQL still add gap lock on unique index when delete (no replies)
Recently, I have encountered a deadlock issue with below steps (MySQL 5.7, Repeatable Read isolation level) 1 Create a new table CREATE TABLE `t` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `name`...
View ArticleMySQL from a Developers Perspective (no replies)
https://blog.koehntopp.info/2020/07/27/mysql-transactions.html • MySQL Transactions - the physical side. Looking at how MySQL InnoDB handles transactions on the physical media, enabling rollback and...
View ArticleMySQL Deadlocks with INSERT (no replies)
https://blog.koehntopp.info/2020/08/02/mysql-deadlocks-with-insert.html
View ArticleMySQL: Locks and Deadlocks (no replies)
https://blog.koehntopp.info/2020/08/01/mysql-locks-and-deadlocks.html
View ArticleMySQL Foreign Keys and Foreign Key Constraints (no replies)
https://blog.koehntopp.info/2020/08/03/mysql-foreign-keys-and-foreign-key-constraints.html
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