Macrotone Blogs

Macrotone blogs upon Joomla, our products and other matters.

Converting Joomla Forum from Discussions to Kunena

b2ap3 icon joomlaI recently looked at the possibility of converting from using the Discussions component to using Kunena.  I will not go into the reasons why this may or may not be required or whether it is a good or bad thing to do.

Looking on the web, for the best method, it was a topic that several others have looked into, but there were no solutions offered. We therefore post this information which others may find useful.

There is a ‘Kunena Importer’ but according to the Kunena documentation this doesn’t work with Kunena 2.0.x or above. We were thus left trying to see how difficult it would be. The following describes the mechanism we used to get our ‘old’ posts transferred over to Kunena 3.0.0. It is possibly not the most efficient but given that it is likely to be a ‘one-off’ conversion, performance is not the prime criteria.

To convert Discussions v1.6.1 to Kunena 3.0.0

Continue reading

Oracle announces MySql changes

oracle
At Oracle OpenWorld this week there were a few changes announced for MySql.  Oracle has issued an open source MySQL 5.6 release candidate.

Oracle issued its first MySQL 5.6 preview in July of 2011. For certain types of queries, there has been a performance gain of as much as 200 percent.

MySQL 5.6 includes sub-query optimizations that improve the query execution speeds. The underlying InnoDB storage engine has also been enhanced for throughput performance.

Under Oracle's guidance the number of new features per release has been cut down to be more manageable. While at the same time, there is more effort going into testing and overall quality.

From a release perspective, Oracle believe that users don't want to upgrade their databases often with big feature releases.  It is noted that Oracle has been coming out with a regular stream of maintenance releases though, as the 5.6 release is being developed. The current plan is for major new releases of MySQL every other year. That would place a MySQL 5.6 generally available release for early in 2013.

Oracle 12c - Pluggable databases.

oracle
Larry Ellison at the Oracle OpenWorld conference earlier this week, provided the information that the forthcoming Oracle Database 12c (the c standing for ‘cloud’) will  feature a radical new architecture called pluggable databases.

Currently a server running an Oracle database has an individual set of server processes.  Adding a second database to the server adds additional processes for the second database.  Pluggable databases will allow multiple databases to run under one copy, or instance, of the Oracle database software, a feature he called "multitenancy."

As the name implies, pluggable databases allow multiple tenant databases to run under one copy of Oracle 12c.  An arbitrary number of up to 250 user databases, can be run under the new architecture, and the architecture could probably support more. The new database is reportedly compatible with older Oracle databases.

This change in architecture brings a number of benefits that Oracle touted through the week, including improved efficiency, stronger security and easier upgrades.

However there are a few challenges for database administrators especially in the area of allocation computational resources. How will the new workload characteristics of running multiple databases on a single server be determined. The characteristics of the optimum size of a server, in reference to memory and storage space, may also/will need to be reconsidered.

Interesting times lay ahead.  Oracle Database 12c is set for availability in 2013.

Go To Top

Joomla! Debug Console

Session

Profile Information

Memory Usage

Database Queries