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Displaying posts with tag: Java (reset)
On MySQL XA Transactions

One of the features I missed in my blog post on problematic MySQL features back in July is XA transactions. Probably I was too much in a hurry, as this feature is known to be somewhat buggy, limited and not widely used outside of Java applications. My first related feature request, Bug #40445 - "Provide C functions library implementing X/OPEN XA interface for Bea Tuxedo", was created almost 10 years ago, based on the issue from one of MySQL/Sun customers of that time. I remember some …

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On Innovation. Interview with Scott McNealy

“We made it a point to hire really smart, visionary people and then let them do their work.
I wanted to delegate and let people be in charge of things. My own decision-making process was to decide who got to decide. To make decisions, you have to first outline the problem, and if you hire really great people, they’re going to know more about the problem they’re dealing with than you ever will.”–Scott McNealy

I have interviewed Scott McNealy. Scott is a Silicon Valley pioneer, most famous for co-founding Sun Microsystems in 1982. We talked about Innovation, AI, Big Data, Redis, Curriki and Wayin.

RVZ

Q1. You co-Founded Sun Microsystems in 1982, and served as CEO and Chairman of the Board for 22 years. What are the main lessons learned in all these years?

Scott …

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Does the Version Number Matter?

Yes, it does! In this blog post, I am going to share my recent experiences with ProxySQL and how important the database software version number can be.

Migration

I was working on a migration to Percona XtraDB Cluster (PXC) with ProxySQL, fortunately on a staging environment first so we could catch any issues (like this one).

We installed Percona XtraDB Cluster and ProxySQL on the staging environment and repointed the staging application to ProxySQL. At first, everything looked great. We were able to do some application tests and everything looked good. I advised the customer to do more testing to make sure everything works well. …

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Connector/J 8.0.11, the Face for Your Brand New Document-oriented Database

This is exciting news: MySQL 8.0 is officially GA!

This time around we do not only offer you a new MySQL Server full of exciting new features, but also a brand new toolset that let you make the most out of MySQL, including the now GA Java database driver, MySQL Connector/J 8.0.11!

This story is about Connector/J but before even I get started I must say a few words about the new features that conducted the development of this new driver. If you prefer, you can jump directly to the Connector/J 8.0 topic below.

What’s new in MySQL Server 8.0? There’s a new Client/Server communication protocol in MySQL: the X Protocol

The X Protocol introduced in MySQL 8.0 series is the backbone for the document-oriented paradigm in the MySQL ecosystem. The new X Protocol and the old MySQL Client/Server Protocol are both available …

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JDBC Driver Connection URL strings

Introduction Ever wanted to connect to a relational database using Java and didn’t know the URL connection string? Then, this article is surely going to help you from now on. Oracle The JDBC connection properties look as follows: JDBC Driver oracle.jdbc.OracleDriver JDBC Url jdbc:oracle:thin:@localhost:1521/orclpdb1 Hibernate Dialect org.hibernate.dialect.Oracle12cDialect And, if you want to connect using a … Continue reading JDBC Driver Connection URL strings →

The post JDBC Driver Connection URL strings appeared first on Vlad Mihalcea.

MySQL Connector/Java 8.0.7-dmr has been released

Dear MySQL users,

MySQL Connector/J 8.0.7 Development Release is a development milestone release for the 8.0.x series.
This release includes the following new features and changes, also described in more detail on https://dev.mysql.com/doc/relnotes/connector-j/8.0/en/news-8-0-7.html

MySQL Connectors and other MySQL client tools and applications now synchronize the first digit of their version number with the (highest) MySQL server version they support.
This change makes it easy and intuitive to decide which client version to use for which server version.

Connector/J 8.0.7 is the first release to use the new numbering. It is the successor to Connector/J 6.0.6

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 …

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How to replace the TABLE identifier generator with either SEQUENCE or IDENTITY in a portable way

Introduction As previously explained, the TABLE identifier generator does not scale, so you should avoid id. However, some enterprise applications might need to run on both MySQL (which does not support database sequences), as well as Oracle, PostgreSQL and SQL Server 2012. This is article is going to explain how easily you can achieve this … Continue reading How to replace the TABLE identifier generator with either SEQUENCE or IDENTITY in a portable way →

MySQL Support Engineer's Chronicles, Issue #4

This week I had to deal with some unusual problems. But let me start with Percona's xtrabackup, software that I consider a key component of many current production MySQL setups and use regularly. Recently new minor versions of XtraBackup were released, check the details on 2.4.5, for example. It made a step towards support of MariaDB 10.2, but it's still a long way to go, see this pull request #200.

My main problem with xtrabackup, though, is not with lack of support of MariaDB 10,2-specific features. Why should they care, after all... The problem is that old well known bugs and problems are not resolved, those that may affect all MySQL versions, forks and environments. Check  …

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How does MySQL result set streaming perform vs fetching the whole JDBC ResultSet at once

Introduction I read a very interesting article by Krešimir Nesek regarding MySQL result set streaming when it comes to reducing memory usage. Mark Paluch, from Spring Data, asked if we could turn the MySQL result set streaming by default whenever we are using Query#stream or Query#scroll. That being said, the HHH-11260 issue was created, and … Continue reading How does MySQL result set streaming perform vs fetching the whole JDBC ResultSet at once →

MySQL Connector/J 5.1.40 has been released

I’m pleased to announce the newest MySQL Connector/J 5.1 Maintenance Release.

As usual, MySQL Connector/J 5.1 can be downloaded from the official distribution channels MySQL Downloads and The Central Repository. The commercially licensed version is available for download at My Oracle Support.

Please don’t forget to consult the CHANGES file in the download archive and/or the release notes page to know what is new and if there are any changes that might affect your applications.

MySQL Connector/J 5.1.40 is the official JDBC driver for MySQL …

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