Big Data Consultant

Ranko Mosic

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Top Stories by Ranko Mosic

Amazon recently added Oracle database hosting capabilities to its RDS service offering. You can rent an Oracle database related infrastructure in a pay-as-you-go fashion now. We are going to explore if corporations should be utilizing Amazon AWS Oracle Database related services (EC2, RDS ), how it should be used, where possible savings and potential trouble points are. With services like Amazon AWS it doesn't matter where your hardware and software physically is - it could be in a room next to you or in some other country. It is much easier and cheaper to procure and get new servers up and running. What's Really New? You swipe your credit card and get an Oracle database server up and running in half an hour. Sounds like magic, especially if you compare it to the weeks and months it normally takes to have an Oracle database server operational in an average enterprise ... (more)

HBase Big Data on Amazon Web Services

Hadoop is designed to store extremely large volumes of data. HBase, an open source NoSQL data store, makes it possible to randomly access such large data sets. HBase is included in Cloudera's Hadoop distribution. One of the major obstacles to a wider adoption of NoSQL databases is the lack of query languages, i.e., lack of comprehensive non-programmatic interfaces to data inside NoSQL data store. We expect NoSQL databases to come up with such query languages in near future. In meantime, Quest's Toad for Cloud fills this gap and makes it easy to seamlessly access NoSQL, Cloud and ... (more)

Self-Managing Database Systems and Oracle RDBMS

Modern enterprise class Oracle shops typically operate hundreds of Oracle databases, all managed by sizable DBA teams. Properly deployed Oracle databases actually require little administrative effort. I am here exploring ideas, technologies and techniques that bring us closer to the fully autonomic, self-managed Oracle database shops. Autonomic computing aims at delivering self-managed and adaptable database systems ( and other IT components), while hiding complexity from users and operators. The goal is to minimize manual administrative effort, thus leading to reduced OPEX, bett... (more)

Oracle Database Backups to the Amazon Cloud

The traditional way of performing backups includes using Oracle RMAN in combination with media management layer software ( typically Netbackup, Tivoli or similar ), which writes backup data to remote robotic tape unit. Tapes are then stored offsite to a secure location. It is well known fact that tape media poses certain challenges in reliability and physical manipulation areas. Cloud-based backups' main attraction is that they are inherently disk based, always accessible, offsite and there are no capex expenditures. All tape related costs are thus eliminated. On the other hand ... (more)

Importance of Having DR Procedures

A recent BlackBerry outage is the nightmare for both RIM and its users. Nature and mass popularity of Blackberry service  make this particular outage highly visible. There are many other in-house outages we never hear about. Companies prefer to keep silent about them, if they can. The only insight we get into the poor state of DR procedures is in some public cases like this one, or from limited personal experience. In my Oracle database infrastructure consulting career I have seen several serious production outages and was part of a few data recovery efforts. Backups and DR proc... (more)