Oracle Exadata X4 database machine – hardware insights

November 30, 2013 by Leave a comment 

The last version of Oracle Exadata Database Machine X3 was announced shortly before the Oracle Open World 2012 Conference. It was great to see at that time more power for the same price, 1/8 rack option and the new Platinum Services on the top. General availability date for the new Oracle Exadata X4-2 is not finally communicated at the moment but I guess it will be released already early in 2014. Below I give some insights of the expected hardware changes  compared to Exadata X3.

As with the previous version Exadata X4 will provide large performance and capacity increases with no changes in Exadata Hardware or Software Prices. Increased CPU cores may require more database licenses though.

Hardware changes in Oracle Exadata X4-2 Database Server

– 50% More Database Cores (2 Twelve-Core Intel® Xeon® E5-2697 v2 Processors x 2.7GHz)
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Oracle DOAG 2013 Conference highlights

November 23, 2013 by Leave a comment 

DOAG Conference 2013 in Nuremberg

DOAG Conference 2013 in Nuremberg

The German Oracle User Group (DOAG) came together this week in Nuremberg at the annual Oracle users’ conference. It was three days of pure knowledge, the most current information on using Oracle solutions, and the exchange of hands-on experience. In addition to about 450 keynote sessions, technical lectures and presentations, the exhibition offered a comprehensive overview of the services and products on the market from about 60+ companies.

Being a part of the event I had also the great opportunity to expand my network and benefit from the know-how of the Oracle community. This time DOAG could attract a lot of the Oracle technology gurus from all over the world including members of Swiss and Austrian Oracle User Groups and the Oracle experts from Oak Table Community. All of this complemented with modern facility of the Nuremberg Convention Center, great organization and nice networking events. Read more »

Green IT washing

November 15, 2013 by Leave a comment 

dadbm green it

Green IT washing everywhere

Seriously, I can’t hear it anymore. Green or Green IT washing everywhere you look. Is there anyone out there who feels the same way?

Sure, in the beginning of this whole “Gгееn IT wave” I was really excited about it. I would even go as far as calling me one of the pioneers of green thinking. I was the first on the campus who had а canvas bag with the slogan “Don’t blow it – good planets are hard to find”.

It was great to see the sustainability fan base growing and some companies introducing а sustainable Environmental Strategy, starting to use Better Cotton and “designing for the environment”.

I really thought people understood the problem. But then Eco became а trend. Suddenly it seemed uncool not to talk about saving the planet. Every brand now claims to be the most sustainable – even саг makers and оil companies. If you trust their advertising, then big SUVs are better for the environment than small cars and аll that oil companies саге about is making sure that we consume less oil. So green is hip. You can read it on t-shirts, watch the growing number of organic food stores or open any magazine and green is everywhere you look. There is no escape!
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Oracle database High Availability – Exadata and Oracle 12c

November 1, 2013 by Leave a comment 

Going through different approaches in building Oracle database systems in best High Availability (HA) practices in my previous articles we went through following important topics:
understanding High Availability (HA) and SLA requirements; reviewing database Availability Levels based on industry standards; building High Availably (HA) database systems based on Oracle ASM, Clusterware and Cold Failover cluster; Oracle Data Guard, Standby and RAC; Extended RAC and MAA. Basically we finished everything but I wanted to give two more extras, which is Oracle Exadata and Oracle 12c High Availability features.

Oracle Exadata Database Machine

The integration of Oracle Maximum Availability Architecture (MAA) best practices with Oracle Exadata Database Machine (Exadata MAA) provides the most comprehensive Oracle High Availability (HA) solution available for the Oracle database. Exadata MAA is very matured and pre-optimized, pre-configured, integrated system of software, servers, storage and MAA configuration best practices that comes ready to implement the highest database High Availability.

Exadata MAA architecture shown in figure below is designed to tolerate unplanned outages of all types, providing both High Availability (HA) and data protection. Exadata MAA also minimizes planned downtime by performing maintenance in a rolling fashion.

Oracle Exadata MAA architecture

Oracle Exadata Maximum Availability Architecture (MAA) architecture

With Oracle Exadata X3 machine version 3 that was announced just before Oracle Open World 2012, Oracle extended the Exadata resources, features and the Support model that all improved the overall system High Availability (HA). The new Oracle Exadata X4 is going to be released in 2014.

See below some high-lights of Oracle Exadata X3
Read more »

Oracle database High Availability – Extended RAC and MAA

October 25, 2013 by 2 Comments 

In my previous article I described some best practices in architecting database systems High Availability Levels (HA) 2 and 3 describing some technical solutions based on Data Guard, Standby database and Oracle Real Application Cluster (RAC). This time I’ll continue till Availability level 4 describing cluster database solutions based on Oracle Extended RAC and Oracle Maximum Availability Architecture (MAA) principles with combinations of Oracle RAC and Standby databases. I suggest reviewing a few of my previous articles on database High Availability including the Availability Continuum graph that illustrates and depicts the increases in availability that can be gained with the progression between levels of availability:
High Availability and SLA requirements for Oracle database
Oracle High Availability – ASM, Clusterware, Cold Failover
Oracle database High Availability – Data Guard, Standby, RAC

Availability Level 3b: Recovery via Redundant Components – Extended RAC

Oracle Database with Oracle RAC architecture is designed primarily as a scalability and availability solution that resides in a single data center. It is possible however, under certain circumstances, to build and deploy an Oracle RAC system where the nodes in the cluster are separated by up to 100 kilometers, to share the same RAC database with multiple RAC instances spread across two sites. This architecture is referred to as an Extended RAC or Metro cluster. We can consider this database architecture as an extension of Availability level 3.

Oracle Extended RAC Cluster

Oracle RAC Extended Cluster – Metro CLuster

The advantages of using Oracle RAC on extended clusters include: Read more »

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