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Percona Server 5.1.73-14.12 is now available

 | July 31, 2014 |  Posted In: Events and Announcements, MySQL, Percona Server, Percona Software

Percona is glad to announce the release of Percona Server 5.1.73-14.12 on July 31st, 2014 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.73, including all the bug fixes in it, Percona Server 5.1.73-14.12 is now the current stable release in the 5.1 series. All of Percona‘s software is open-source and free, all the details of the release […]

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Prevent MySQL downtime: Set max_user_connections

 | July 29, 2014 |  Posted In: Insight for DBAs, MySQL

One of the common causes of downtime with MySQL is running out of connections. Have you ever seen this error? “ERROR 1040 (00000): Too many connections.” If you’re working with MySQL long enough you surely have. This is quite a nasty error as it might cause complete downtime… transient errors with successful transactions mixed with […]

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What I learned while migrating a customer MySQL installation to Amazon RDS

 | July 28, 2014 |  Posted In: Insight for DBAs, MySQL, Percona MySQL Consulting, Percona MySQL Support

Hi, I recently had the experience of assisting with a migration of a customer MySQL installation to Amazon RDS (Relational Database Service). Amazon RDS is a great platform for hosting your MySQL installation and offers the following list of pros and cons: You can scale your CPU, IOPS, and storage space separately by using Amazon […]

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Monitoring MySQL flow control in Percona XtraDB Cluster 5.6

 | July 25, 2014 |  Posted In: Insight for DBAs, MySQL, Percona Software, Percona XtraDB Cluster

Monitoring flow control in a Galera cluster is very important. If you do not, you will not understand why writes may sometimes be stalled. Percona XtraDB Cluster 5.6 provides 2 status variables for such monitoring: wsrep_flow_control_paused and wsrep_flow_control_paused_ns. Which one should you use? What is flow control? Flow control does not exist with regular MySQL replication, […]

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