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Percona Toolkit 2.2.13 is now available

Percona is pleased to announce the availability of Percona Toolkit 2.2.13.  Released January 26, 2015. Percona Toolkit is a collection of advanced command-line tools to perform a variety of MySQL server and system tasks that are too difficult or …

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[ERROR] mysqld: Sort aborted: Server shutdown in progress

Recently, one of our support customers faced this: “[ERROR] mysqld: Sort aborted: Server shutdown in progress.” At first it would appear this occurred because of a mysql restart (i.e. the MySQL server restarted and the …

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Percona Server 5.6.13-61.0 first GA release is now available

Percona is glad to announce the first GA (Generally Available) release of Percona Server 5.6.13-61.0 on October 7th, 2013 (Downloads are available here and from the Percona Software Repositories. Based on MySQL 5.6.13, including all …

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Oracle Speakers at Percona Live London 2013

I’m pleased to announce that speakers from Oracle will join the lineup at the Percona Live London 2013 MySQL conference which is November 11 & 12. Percona Live London 2013 features 4 keynotes, 30 breakout …

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Percona Server 5.6.13-60.5 third Release Candidate is now available

Percona is glad to announce the third Release Candidate of Percona Server 5.6.13-60.5 (downloads are available here and from the Percona Software Repositories). The final release is almost ready. Thank you to everyone who has …

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Logging Deadlock errors

The principal source of information for InnoDB diagnostics is the output of SHOW ENGINE INNODB STATUS but there are some sections that are not very useful. For example, LATEST DETECTED DEADLOCK only shows, as the …

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How to diagnose errors in the MySQL error log

I frequently see questions about how to understand the nature of errors in MySQL’s error log. Now, there is a lot of complexity to this — the flowchart would be quite large, as with any …

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Helgrinding MySQL with InnoDB for Synchronisation Errors, Fun and Profit

It is no secret that bugs related to multithreading–deadlocks, data races, starvations etc–have a big impact on application’s stability and are at the same time hard to find due to their nondeterministic nature.  Any tool …

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More on MySQL Error Messages

I wrote about MySQL Error Messages before and as you might guess I’m not very happy with quality for error messages it produces. Now I’m revisiting this subject with couple of more annoying examples I …

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MySQL Error Message Nonsenses

What MySQL honestly was never good at is giving good helpful error messages. Start with basics for example – The error message in case of syntax error gives you information about tokens near by but …

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