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FromDual is 10 years old
On 1 March 2020 FromDual became 10 years old! Sincere thanks are given to all our customers, partners and interested person for their support and good cooperation in the last 10 years. And we would be...
View Articleinnodb_deadlock_detect - Rather Hands off!
Recently we had a new customer who has had from time to time massive database problems which he did not understand. When we reviewed the MySQL configuration file (my.cnf) we found, that this customer...
View ArticleShutdown with MySQL 8
On StackExchange for Database Administrators I recently have seen a question which attracted my interest.The question puzzled me a bit because the answer seems too easy. Further the question was not so...
View ArticleFromDual Ops Center for MySQL and compatible databases 1.0.0 has been released
FromDual has the pleasure to announce the release of the new version 1.0.0 of its popular FromDual Ops Center focmm, a Graphical User Interface (GUI) for MySQL and compatible databases.The FromDual Ops...
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Stupid Error Messages
Very often I see some stupid error messages as a (power-)user. I do not know if this is because of lazy developers or managers not having enough focus on more useful error messages.If the error...
View ArticleFromDual Performance Monitor for MySQL 1.2.0 has been released
FromDual has the pleasure to announce the release of the new version 1.2.0 of its popular Database Performance Monitor for MySQL fpmmm.The FromDual Performance Monitor for MySQL (fpmmm) enables DBAs...
View ArticleFromDual Performance Monitor for MariaDB 1.2.0 has been released
FromDual has the pleasure to announce the release of the new version 1.2.0 of its popular Database Performance Monitor for MariaDB and Galera Cluster fpmmm.The FromDual Performance Monitor for MariaDB...
View ArticleIncrease file limit of a running process
Asking stupid questions and googling for them is fun some times...Today I was asking myself if one could rise the file limit for a running MariaDB mysqld process online without restarting the database...
View ArticleMariaDB Prepared Statements, Transactions and Multi-Row Inserts
Last week at the MariaDB/MySQL Developer Training we had one participant asking some tricky questions I did not know the answer by heart.Also MariaDB documentation was not too verbose (here and...
View ArticleFromDual Ops Center for MariaDB and MySQL 0.9 has been released
Caution: We have introduced an evil bug which prohibits installation of focmm. Sorry! Somehow it did pass our QA. To fix this bug update file lib/Upgrade.inc on Line 1965 as follows: - $sql =...
View ArticleFromDual Ops Center for MariaDB and MySQL 0.9.1 has been released
FromDual has the pleasure to announce the release of the new version 0.9.1 of its popular FromDual Ops Center for MariaDB and MySQL focmm.The FromDual Ops Center for MariaDB and MySQL (focmm) helps...
View ArticleDropped Tables with FromDual Backup Manager
Some applications have the bad behaviour to CREATE or DROP tables while our FromDual Backup Manager (bman) backup is running.This leads to the following bman error message:...
View ArticleDo not underestimate performance impacts of swapping on NUMA database systems
If your MariaDB or MySQL database system is swapping it can have a significant impact on your database query performance! Further it can also slow down your database shutdown and thus influence the...
View ArticleOops! - That SQL Query was not intended... Flashback
It is Saturday night at 23:19. Time to go to bed after a hard migration day. Just a last clean-up query before finishing: Tap tap tap. Enter! - Oops! SQL> UPDATE prospect_lists_prospects SET...
View ArticleMariaDB sys Schema
The MySQL sys Schema is a cool thing and was mostly developed by Mark Leith and Jesper Wisborg Krogh from Oracle/MySQL. The sys Schema is based on the somehow cryptic MySQL PERFORMANCE_SCHEMA which was...
View ArticleEnable General Query Log per Connection in MariaDB
The General Query Log in MariaDB is a Log (file or table) that logs every statement sent from the Application to the MariaDB Database Server from the Connect Command to the Quit Command. A simple...
View ArticleWho else is using my memory - File System Cache analysis
See also our former articles:Do not underestimate performance impacts of swapping on NUMA database systemsMariaDB and MySQL swap analysisWhen we do analysis of MariaDB Database servers we also check...
View ArticleSchulung MariaDB/MySQL für Fortgeschrittene im August 2019 in Köln
Sommerferien-Zeit – für all die Daheimgebliebenen dürfte es jetzt hoffentlich etwas ruhiger zu und her gehen. Zeit für eine Weiterbildung? Es bleibt nicht mehr viel Zeit, das Jahres-Schulungs-Budget...
View ArticleFromDual Backup and Recovery Manager for MariaDB and MySQL 2.2.0 has been...
FromDual has the pleasure to announce the release of the new version 2.2.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).The new FromDual Backup and Recovery Manager can be...
View ArticleFromDual Backup and Recovery Manager for MariaDB and MySQL 2.2.1 has been...
FromDual has the pleasure to announce the release of the new version 2.2.1 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).The new FromDual Backup and Recovery Manager can be...
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