Oracle VM Consulting
view counter

Feed items

From 0 to Cassandra – An Exhaustive Approach to Installing Cassandra

All around the Internet you can find lots of guides on how to install Cassandra on almost every Linux distro around. But normally all of this information is based on the packaged versions and omit some parts that are deemed essential for proper Cassandra functioning.

Note: If you are adding a machine to an existing Cluster please approach this guide with caution and replace the configurations here recommended by the ones you already have on your cluster, specially the Cassandra configuration.

Without further conversation lets start!

Log Buffer #407, A Carnival of the Vanities for DBAs

This Log Buffer Edition keeps the aim high and brings few of the best blog posts from Oracle, SQL Server and MySQL.

Oracle:

3 Modes for Moving Data to the BI Applications DW from a Source Application Database.

JSON for APEX Developers.

Oracle Database 12c Patching: DBMS_QOPATCH, OPATCH_XML_INV, and datapatch

Background

Oracle Database 12c brings us many new features including: the long needed ability to run OPatch and query the patch software installed in the Oracle Home programatically through SQL using the new DBMS_QOPATCH package.

Log Buffer #405, A Carnival of the Vanities for DBAs

This Log Buffer Edition rides on the wave of new ideas in the database realms. From Oracle technologies through MySQL to the SQL Server, things are piping hot.

Oracle:

The Call for Papers for the Rittman Mead BI Forum 2015 is currently open, with abstract submissions open to January 18th 2015.

Log Buffer #406, A Carnival of the Vanities for DBAs

This Log Buffer Edition covers blog posts from various bloggers of Oracle, SQL Server and MySQL.

Oracle:

Sync tables: generate MERGE using Unique constraint.

What Hardware and Software Do YOU Want Oracle to Build?

Performance Problems with Dynamic Statistics in Oracle 12c

I’ve been making some tests recently with the new Oracle 12.1.0.2 In-Memory option and have been faced with an unexpected  performance problem.  Here is a test case:

Troubleshooting a Multipath Issue

Multipathing allows to configure multiple paths from servers to storage arrays. It provides I/O failover and load balancing. Linux uses device mapper kernel framework to support multipathing.

In this post I will explain the steps taken to troubleshoot a multipath issue. This should provide an glimpse into the tools and technology involved. Problem was reported in a RHEL6 system in which a backup software is complaining that the device from which /boot is mounted does not exist.

WARNING!!! Maximum Load 800 lbs

Is it just my recently discovered dumbness or am I really on to something here? I just returned home from a ritzy shopping mall and had to ride down an elevator with a brimming shopping trolly filled with items which my companion miraculously managed to buy from every sale from every corner of that mall. Anyway before I recall that shopping bill and weep copiously, I just wanted to share something which always bugs me when I use elevators.

Log Buffer #404, A Carnival of the Vanities for DBAs

With new year already in fast gear, bloggers are sparing no stone unturned to come up with innovative ideas. This Log Buffer edition is keeping pace with them as always.

Oracle:

While playing with 12c Scott tried the upgrade to the DEFAULT column syntax that now allows sequences.

What it’s Like to Intern at Pythian

About eight months ago I started working as a Global Talent Acquisition Intern here at Pythian. It was my first co-op work placement, and my first experience in a professional work setting. I had never done anything like it before and was definitely nervous yet excited for the opportunity. As any eager but nervous person, I researched as much as I could to prepare myself for what I’d be doing. I distinctly remember searching on the Internet; What does an intern do?” and was a little unnerved by some of the results that I came across.

view counter