MariaDB Connector/C 2.3.4 now available dbart Mon, 12/04/2017 - 12:37

The MariaDB project is pleased to announce the immediate availability of MariaDB Connector/C 2.3.4. See the release notes and changelogs for details and visit mariadb.com/downloads/connector to download.

Download MariaDB Connector/C 2.3.4

Release Notes Changelog About MariaDB Connector/C

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In this blog post, I investigate a case of spiking InnoDB Rows inserted in the absence of a write query, and find internal temporary tables to be the culprit.

Recently I was investigating an interesting case for a customer. We could see the regular spikes on a graph depicting “InnoDB rows inserted” metric (jumping from 1K/sec to 6K/sec), however we were not able to correlate those spikes with other activity. The

innodb_row_inserted

 graph (picture from PMM demo) looked similar to this (but on a much larger scale):

Other graphs (Com_*, Handler_*) did not show any spikes like that. I’ve examined the logs (we were not able to enable general log or change the threshold of the slow log), performance_schema, triggers, stored procedures, prepared statements and even reviewed the binary logs. However, I was not able to find any single …

In this post, we’ll examine how we’ve improved the GUI layout for Percona Monitoring and Management 1.5 by moving the Query Analytics (QAN) functions into the Grafana interface.

For Percona Monitoring and Management users, you might notice that QAN appears a little differently in our 1.5 release. We’ve taken steps to unify the PMM interface so that it feels more natural to move from reviewing historical trends in Metrics Monitor to examining slow queries in QAN.  Most significantly:

1. QAN moves from a stand-alone application into Metrics Monitor as a dashboard application
2. We updated the color scheme of QAN to match Metrics Monitor (but you can toggle a button if you prefer to still see QAN in white!)
3. Date picker and host selector now use the same methods as Metrics Monitor

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Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.

The CFP for Percona Live Santa Clara 2018 closes December 22, 2017: please consider submitting as soon as possible. We want to make an early announcement of talks, so we’ll definitely do a first pass even before the CFP date closes. Keep in mind the expanded view of what we are after: it’s more than just MySQL and MongoDB. And don’t forget that with one day less, there will be intense competition to fit all the content in.

A new book on MySQL Cluster is out: Pro MySQL NDB Cluster by Jesper Wisborg Krogh and Mikiya Okuno. At 690 pages, it is a weighty tome, and something I fully plan on reading, considering I haven’t played with …

This is a short post about DELETE data from huge table in MySQL. Most of us experienced, deleting huge record from MySQL tables taking long time, sometimes hours to complete deleting millions of records. Also, on production servers it locks the other table operations as well. Recently, I deleted around 70 million record from a production database in less than an hour. There are multiple workarounds to do this, however I am writing about the two methods which are frequently used by me for this operation. 

• Using intermediate table.
• Delete data in small chunks.

Before we proceed with using any of these methods, make sure the table has required indexes on where clause and you have a copy of the table as backup.
Using intermediate table:In this method, create a new table with similar data structure and copy only required data. Rename the original table as archive or backup table and Rename the …

In my blog MySQL 8.0 Collations: Migrating from older collations I showed a query that could identify the values that might break a unique constraint when migrate your data. That query was not very efficient due to the self join of the converted values.…

Migrating a MySQL database usually requires only few simple steps, but can take quite some time, depending on the amount of data you would like to migrate.

The following steps will guide through how to export the MySQL database from the old server, secure it, copy it to the new server, import it successfully and make sure the data is there.

Exporting MySQL database to a dump file

Oracle provides a utility named mysqldump which allows to easily export the database structure and data to an SQL dump file. Use the following command:

mysqldump -u root -p --opt [database name] > [database name].sql

Few notes:

• We’re using the –single-transaction flag to avoid a database lock while exporting the data. It will allow you to continue updating data in your …

Dear MySQL Users,

MySQL Connector/J 5.1.45, a maintenance release of the production 5.1
branch has been released. Connector/J is the Type-IV pure-Java JDBC
driver for MySQL.

MySQL Connector Java is available in source and binary form from the
Connector/J download pages at
http://dev.mysql.com/downloads/connector/j/5.1.html
and mirror sites as well as Maven-2 repositories.

MySQL Connector Java (Commercial) is already available for download on the
My Oracle Support (MOS) website. This release will shortly be available on
eDelivery (OSDC).

As always, we recommend that you check the “CHANGES” file in the
download archive to be aware of changes in behavior that might affect
your application.

MySQL Connector/J 5.1.45 includes the following general bug fixes …

Percona announces the release of Percona Monitoring and Management 1.5.1. This release contains fixes for bugs found after Percona Monitoring and Management 1.5.0 was released.

Bug fixes

• PMM-1771: When upgrading PMM to 1.5.0 using Docker commands, PMM System Summary, PMM Add Instance, PMM Query Analytics dashboards were not available.
• PMM-1761: The PMM Query Analytics dashboard did not display the list of hosts correctly.
• …

Percona announces the release of Percona XtraBackup 2.3.10 on November 29, 2017. Downloads are available from our download site or Percona Software Repositories.

Percona XtraBackup enables MySQL backups without blocking user queries, making it ideal for companies with large data sets and mission-critical applications that cannot tolerate long periods of downtime. Offered free as an open source solution, it drives down backup costs while providing unique features for MySQL backups.

This release is the current GA …