Big Data Consultant

Ranko Mosic

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Top Stories by Ranko Mosic

Machine Learning is a critical part of extracting value from Big Data. Choosing proper model, preparing data and getting usable results on large scale data is non-trivial exercise. Typically process consists of model prototyping using higher level, (mostly) single machine based tool like R, Matlab, Weka, then coding in Java or some other language for large scale deployment. This process is fairly involved, error prone, slow and inefficient. Existing tools aiming at automating and improving this process are still somewhat immature and wide scale Machine Learning enterprise adoption is still low. Efforts are under way to address this gap i.e. to make enterprise class Machine Learning more accessible and easier. Spark is new, purpose-built, distributed, in-memory engine that makes it possible to perform compute intensive jobs on commodity hardware clusters. One of ap... (more)

Oracle RMAN, BMC Patrol Catalogs Hosted in Amazon Cloud

Oracle RMAN  (Recovery Manager) catalog database contains backup metadata for all enterprise wide Oracle databases. Each database backed up through RMAN needs connection to a central backup repository database. RMAN catalog  is purged and maintained by removing obsolete backup records, crosschecking with existing media etc. If central repository grows too big then backup performance will suffer since it will take too long for RMAN to locate metadata. Amazon Web Services gives us the ability to quickly and easily create either brand new RMAN catalog database or move an existing c... (more)

Oracle Fusion Applications - Installation and First Impressions (Part 7)

Oracle Fusion Applications Provisioning is the überinstaller for OFA. Based on your input and its knowledge about OFA dependencies it will prepare and deploy OFA components to appropriate target locations. Provisioning Plan is driving the installation process. It is created when you select this option from Provisioning Wizard:   Here you pick components Provisioning Plan is created for - we chose Oracle Financials module: Wizard will show you topology summary and details about the chosen configuration: Here we provide Access Manager details: Here we supply Oracle Identity ... (more)

Deploying Oracle Databases to Amazon AWS (EC2, RDS)

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 serv... (more)

Oracle Database Upgrades Faster and Safer in Amazon Web Services

Oracle database upgrades are a stressful exercise. Normally you need to backup production database, upgrade database software, then run database scripts that will upgrade dictionary. Once it is all done and success is confirmed you can start using upgraded database. If something goes wrong then you rely on backups to restore to a  previous state. In other words, there is complete dependency on backups and restore success if things go wrong. AWS gives us possibility to quickly and cheaply create new database instances where an upgrade can be tested. We can also instantly create com... (more)