[…] of the cool new features in 5.7 Release Candidate is Multi Source […]

Last week, I wrote about how to use bash arrays and the MySQL database to create unit and integration test scripts. While the MySQL example was nice for some users, there were some others who wanted me to show how to write bash shell scripts for Oracle unit and integration testing. That’s what this blog post does.

If you don’t know much about bash shell, you should start with the prior post to learn about bash arrays, if-statements, and for-loops. In this blog post I only cover how to implement a bash shell script that runs SQL scripts in silent mode and then queries the database in silent mode and writes the output to an external file.

I’ve copied the basic ERD for the example because of a request from a reader. In their opinion it makes cross referencing the …

Hi,

When I run command : radiusd -X
I get error :
——————————
rlm_sql (sql): Released connection (4)
/etc/raddb/mods-enabled/redis[10]: Failed to link to module ‘rlm_redis': rlm_redis.so: cannot open shared object file: No such file or directory
——————————

Can you help?
Thanks,

Unexpected downtime is one of your worst nightmares, but most attempts to find problems before they happen are threshold-based. Thresholds create noise, and alerts create false positives so often you may miss actual problems.

When we began building VividCortex, we introduced Adaptive Fault Detection, a feature to detect problems through a combination of statistical anomaly detection and queueing theory. It’s our patent-pending technique to detect system stalls in the database and disk. These are early indicators of serious problems, so it’s really helpful to find them. (Note: “fault” is kind of an ambiguous term for some people. In the context we’re using here, it means a stall/pause/freeze/lockup).

The initial version of fault detection enabled us to find hidden problems nobody suspected, but as our customer base diversified, we found more situations that could fool it. We’ve released a new version that …

This Log Buffer edition covers Oracle, SQL Server and MySQL blog posts from all over the blogosphere!

Oracle:

Hey DBAs:  You know you can  install and run Oracle Database 12c on different platforms, but if you install it on an Oracle Solaris 11 zone, you can take additional advantages.

Here is a video with Oracle VP of Global Hardware Systems Harish Venkat talking with Aaron De Los Reyes, Deputy Director at Cognizant about his company’s explosive growth & how they managed business functions, applications, and supporting infrastructure for success.

Oracle …

Percona is glad to announce the release of Percona XtraBackup 2.3.1-beta1 on May 20th 2015. Downloads are available from our download site here. This BETA release, will be available in Debian testing and CentOS testing repositories.

This is an BETA quality release and it is not intended for production. If you want a high quality, …

In July 2014, I wrote that we were working on a new native InnoDB data dictionary to replace MySQL's legacy frm files.

This is quite possibly the largest internals change to MySQL in modern history, and will unlock a number of previous limitations, as well as simplify a number of failure states for both replication and crash recovery.

With MySQL 5.7 approaching release candidate (and large changes always coming with risk attached) we decided that the timing to try to merge in a new data dictionary was just too tight. The data dictionary development is still alive and well, but it will not ship as part of MySQL 5.7.

So please stay tuned for updates... and thank you for using MySQL!

FATAL: Cannot connect to MySQL server on 'localhost': Cacti Error - Solution to the issue while setting-up.

The post Cannot connect to MySQL server on ‘localhost’: Cacti Error first appeared on Change Is Inevitable.

If data is oil for organizations then Database Management System (DBMSs) are the machine it runs; processing data for conscious operational and analytical decisions. This symbiotic relationship is so important one could say the success of modern-day applications and systems— specifically Relational Database Management Systems (RDBMSs)—relies on its success.

RDBMSs are universally preferred for both transaction or analytical processing; stemming from  their reliability for data storage, access, and protection. Also a major factor in choosing RDBMSs is the reputation of solid performance and easy implementation for most applications.

As of now, commercial vendors such as Oracle, IBM, and Microsoft rule RDBMS territory, but this is all changing. Commercial RDBMS products are expensive, with licensing and maintenance costs often draining millions of dollars per year.  For many, especially new or smaller …

Kubernetes is a system for managing containerized applications in a clustered environment. It provides basic mechanisms for deployment, maintenance and scaling of applications on public, private or hybrid setups. It also comes with self-healing features where containers can be auto provisioned, restarted or even replicated. 

Kubernetes is still at an early stage, please expect design and API changes over the coming year. In this blog post, we’ll show you how to install a Kubernetes cluster with three minions on CentOS 7, with an example on how to manage pods and services. 

Kubernetes Components

Kubernetes works in server-client setup, where it has a master providing centralized control for a number of minions. We will be deploying a Kubernetes master with three minions, as illustrated in the diagram further below.

Kubernetes has several components:

…