Percona XtraDB Cluster 5.6.44-28.34 Is Now Available

Percona XtraDB Cluster 5.7

Percona is glad to announce the release of Percona XtraDB Cluster 5.6.44-28.34 on June 19, 2019. Binaries are available from the downloads section or from our software repositories.
Percona XtraDB Cluster 5.6.44-28.34 is now the current release, based on the following:

Percona Server 5.6.44-86.0
Codership WSREP API release 5.6.43
Codership Galera library 3.26

All Percona software is open-source and free.
Bugs Fixed

PXC-2487: The […]

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Percona’s Commitment to Supporting MongoDB Users

MongoDB Users

Percona recognizes MongoDB’s performance, reliability, and flexibility and has been evaluating, developing, and extending MongoDB software since 2015.
Along with many others, Percona believes that fully open source software provides great value to users and we will continue to follow that ethos and practice.
We are involved with MongoDB software, services, and support on many levels. […]

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Upcoming Webinar 6/19: A Deep Dive Into PostgreSQL Indexing

PostgreSQL Indexing

Please join Percona’s Senior Software Engineer Ibrar Ahmed as he presents his talk “A Deep Dive Into PostgreSQL Indexing” on Wednesday, June 19th, 2019 at 6:00 AM PDT (UTC-7) / 9:00 AM EDT (UTC-4).
Register Now
Indexes are a basic feature of relational databases, and PostgreSQL offers a rich collection of options to developers and designers. […]

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Percona Server for MongoDB – Now Featuring HashiCorp Vault Integration

Percona Server for MongoDB

Last Friday we announced the release of Percona Server for MongoDB 4.0.10-5. This can be downloaded from the Percona website or the Percona software repositories.
Percona Server for MongoDB is an enhanced, open source, and highly-scalable database. It is a fully compatible, drop-in replacement for MongoDB 4.0 Community Edition and doesn’t require any changes to MongoDB applications […]

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Percona Backup for MongoDB 0.5.0 Early Release is Now Available

Percona Backup for MongoDB

Percona is pleased to announce the early release of our latest software product Percona Backup for MongoDB 0.5.0 on June 17, 2019. The GA version is scheduled to be released later in 2019.
Percona Backup for MongoDB is a distributed, low-impact solution for consistent backups of MongoDB sharded clusters and replica sets. This is a […]

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Percona Server for MongoDB 4.0.10-5 Now Available

Percona Server for MongoDB

Percona announces the release of Percona Server for MongoDB 4.0.10-5 on June 13, 2019. Download the latest version from the Percona website or the Percona software repositories.
Percona Server for MongoDB is an enhanced, open source, and highly-scalable database that is a fully-compatible, drop-in replacement for MongoDB 4.0 Community Edition. It supports MongoDB 4.0 protocols and drivers.
Percona Server for […]

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How to Report Bugs, Improvements, New Feature Requests for Percona Products

report bugs

Clear and structured bug, improvement, and new feature request reports are always helpful for validating and fixing issues. In a few cases, we have received these reports with incomplete information which can cause a delay in the verification of issues. The most effective method to avoid this situation is to ensure complete information about […]

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How pt-online-schema-change Handles Foreign Keys


Foreign key related issues are very common when dealing with DDL changes in MySQL using Percona toolkit. In this blog post, I will explain how the tool (pt-online-schema-change) handles foreign key constraints when executing a DDL change.
First of all, I would like to explain why foreign keys have to be handled at all before […]

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