Speakers @OGB EMEA Virtual Tour 2020


Alan Arentsen is an Oracle APEX developer with experience on a wide spectrum. He has done everything between installations and development in PL/SQL and APEX.
Alan has been developing applications in Java, C++, and various scripting tools since 1998. Since he met APEX, his enthusiasm has grown. Nowadays he also is focusing on Oracle JET.
So far he has presented on the following conferences since 2014: DOAG, APEX World, KScope, SIOUG, OpenWorld, OUGN, AMIS 25 BEYOND THE HORIZON, UKOUG Tech, Oracle Code, Tech Experience, HROUG, APEX Connect
In June 2017 he was rewarded with the Oracle ACE award.


Aman Sharma is an Oracle Database professional who is passionate about Oracle Databases. He has been working with Oracle databases since 1999 and currently working as a consultant and instructor. Prior to this, he has worked as a DBA for a large software development company. Aman Sharma is a certified Oracle Cloud architect, OCS ADB, OCP in 9i,10g, 11g, 12c OCE in RAC, Linux, SQL, OCS in 11g, 12c and Sun Certified System Administrator. Aman was awarded the Oracle ACE award in 2010. He is a regular speaker at Sangam , OGyatra and AIOUG chapter events.


Ana McCollum is the Product Manager for monitoring in the Enterprise and Cloud Manageability division at Oracle. She has over a decade experience working with customers to implement Oracle’s manageability solutions to monitor their environments. She is the product manager for monitoring for both Oracle Enterprise Manager as well as Oracle Management Cloud.

Andrei Manoliu

I am part of the Oracle Customer Success Team, guiding each customer towards a long-term and sustainable utilization of Oracle Cloud services.
I started working with the Oracle Database since 9i firstly as a developer, learning Oracle Forms and Reports on the way. Later I changed the role to being a DBA for most of my career managing 9i, 10g, 11g, and 12c databases. Taking the step to a presales position or later a post-sales position got me closer to the Oracle Cloud and the database family services there.
I am one of the first Autonomous Database Certified Experts in Romania.

Andrej Baranovskij is a full stack developer, machine learning expert, and founder in Katana ML. His technical expertise is based on 15 years of continuous work developing enterprise IT systems across the globe (USA, Canada, Germany, UK, Denmark, Portugal, South Africa, Hong Kong, and more). Andrej is passionate about Machine Learning, he believes it can become a new programming paradigm. Andrej is a prolific technical blogger, he is a writer in online Towards Data Science publication – https://towardsdatascience.com/


Ashish Agrawal is currently Director, Product Management for IT Analytics in Oracle Management Cloud developing cloud based solutions for next-generation integrated monitoring, management, and analytics cloud services. Ashish has over 24 years of experience in IT. Ashish has expertise in Oracle Database Administration, performance tuning, Enterprise Manager, Exadata Engineered Systems, Platform as a Service, DevOps. More about Ashish on LinkedIn at www.linkedin.com/in/ashishagrawaloracle or http://tinyurl.com/ashishoracle. I have spoken previously at UKOUG, IOUG, NYOUG, Oracle OpenWorld, Full Stack Developer Conference Finland 2019, DOAG 2019,AIOUG.


Charlie Berger

Charlie Berger is the Sr. Director of Product Management, Machine Learning, AI and Cognitive Analytics for Oracle Server Technology. Since 1999, he has been responsible for Oracle Machine Learning—starting when Oracle acquired Thinking Machines Corporation where he was VP of Product Management. In addition to working with development and customers, he supports Applications Development that embed OML. He is the co-founder of BIWA Inc. that runs the annual Analytics and Data Summit event. Previously, he worked in startups in expert systems, statistical and exploratory data analysis software and robotics and machine vision. He holds an MS in Manufacturing Engineering and an MBA, both from Boston University. He holds a BS in Operations Research/Industrial Engineering from UMASS, Amherst.



Chinmayi Krishnappa

I currently own the sequence feature at Oracle and have been at the forefront of resolving customer issues in this area for several years. I have also worked on a number of new sequence enhancements that I am excited to share with the wider community.


Chris Saxon

I’m Chris Saxon, an Oracle Developer Advocate for SQL. My job is to help you get the best out of the Oracle Database and have fun with SQL!

To help you with this I blog at All Things SQL. I also create videos combining SQL and magic on YouTube at the The Magic of SQL.

If you have questions about working with Oracle technology, please reach out to me.

You can do this via  @chrisrsaxon   or on Ask Tom .

Christopher Jones is a Senior Principal Product Manager working with the Oracle Database Data Access team primarily on APIs for scripting languages including Node.js, Python, PHP and the ODPI-C library for Oracle Database driver writers. He has responsibilities for Oracle Call Interface (OCI) and related Oracle Database APIs; for Oracle Database clients such as Oracle Instant Client; and for general database adoption by developers. He co-released the popular book “The Underground PHP and Oracle Manual” and is the author of a number of technical articles. Christopher has presented at big and small conferences around the world including the O’Reilly Open Source Convention and Oracle OpenWorld.

He tweets  @ghrd and blogs .

Connor McDonald is a Oracle Developer Advocate for Oracle Corporation. Over the past 25 years, he has worked with systems in Australia, the United Kingdom, Southeast Asia, Western Europe, and the United States. He has co-authored three books and has been a popular speaker at Oracle conferences around the world, specializing in topics regarding the database engine and PL/SQL. He won the Oracle Code speaker award in 2018, has three times won the Best Speaker award by the UK Oracle User Group, and was awarded a Lifetime Achievement award by the UKOUG in 2016.


  Dani Schnider works as Senior Principal Consultant and Data Warehouse Lead Architect for Trivadis , a Swiss IT consulting company. He finished his studies in computer science at ETH Zurich in 1990. Since 1994, he is developing data models and applications with Oracle databases (version 6 to 19c), since 1997 mainly in Data Warehousing projects.
Most of his time he is doing jobs for customers in design, data modeling, ETL development, architecture reviews and performance optimization of Oracle Data Warehouses. He is teacher for several Oracle trainings at Trivadis and co-author of the (German) books Data Warehousing mit Oracle – Business Intelligence in der Praxis and Data Warehouse Blueprints.
Dani is Oracle ACE Director and writes about Data Warehousing with Oracle on his blog, publishes articles and white papers and gives presentations on conferences.


David Kurtz has worked with the Oracle database since 1989 and with PeopleSoft ERP applications since 1996, specialising in system performance tuning. He works as an independent consultant. David is a regular presenter at Oracle and PeopleSoft conferences. He is the author of PeopleSoft for the Oracle DBA, and blogs about PeopleSoft  and Oracle . David is an Oracle ACE Director and a proud member of the Oak Table.


Debra Lilley, Accenture, HCM Practice Lead – Oracle Business Group, Europe. She is an Oracle ACE Director and Fusion Applications UX Advocate. She is a volunteer and Past President of UKOUG and led the Product Development Committee of the IOUC; the user group team working with Oracle during the development of Fusion Applications. She has worked with Oracle Applications and technology since 1996 and presented at over 300 events around the world about Oracle Applications and the Technology they are built on


Edelweiss Kammermann is an Oracle Ace Director and Analytics and Data Integration specialist with over 20 years of consulting and project management experience in Oracle technology.
Her work with both private and public organizations has spanned much of South America in World Bank Projects
In the last 7 years she has been working almost exclusively for UK and US clients

As Oracle University instructor she has been teaching since 2001 a variety of courses including OBIEE, BPM, BI Publisher, Oracle Data Integrator and Oracle Analytics Cloud.

Edelweiss is a frequent speaker at many conferences across Latin America -including the Groundbreakers Tour-, and also at very well-known international conferences like UKOUG Tech/Apps, OOW, Collaborate, Analytics & Data Summit and Oracle Code. Her sessions have been about different Oracle Cloud Services such as Oracle Analytics Cloud, Autonomous Data Warehouse Cloud, Oracle Machine Learning and Big Data Cloud in Spanish, Portuguese and English.

As a writer she runs a blog about Analytics, DW and Data Integration and has published technical articles on OTN, Rittman Mead blog, LinkedIn and OTN Latin America.

Edelweiss is a very active member of the Oracle community. She is a founding member and Vice President of the Oracle User Group of Uruguay (UYOUG). She is the former VP of Latin America Oracle Users Community (LAOUC) and now the Director of Education. She is also a board member of Analytics and Data Oracle User Community

Currently she is working at ITConvergence as Senior Analytics Manager and managing analytics projects for US and Latam customers.


Edward Roske is the cofounder/CEO of interRel Consulting and co-author of the bestselling book series “Look Smarter than You Are with Hyperion.” Known for his dry wit and Oracle EPM/BI mastery, Oracle has sent Edward around the globe to evangelize Oracle EPM/BI in over 50 countries across 6 continents. Though he was the first person ever to get a perfect score on the Essbase Certification exam, he is most proud of winning “Speaker of the Year” at the largest Oracle BI/EPM Conference in the world.

Follow him on  @ERoske or check out his free videos.

Erik van Roon is an Oracle ACE who has worked with Oracle technology since 1995, specializing in, but not limiting to, SQL and PLSQL.

Since 2009 he is self-employed. His company is called EvROCS.
Prior to that he worked for several consulting companies in the Netherlands.
He worked on major projects for several clients in industries like entertainment, banking and energy.
He’s has been the technical lead of multiple successful high impact data-migration projects moving and transforming large amounts of data.
He’s been a speaker at conferences like ODTUG’s KScope, NLOUG Tech Experience, POUG, BGOUG and ILOUG.
In 2015 Erik was nominated and selected to be a finalist in the SQL category of OTN Developers Choice Awards.


Fernando Simon is a Senior Database Architect with a large experience with Oracle Database, mainly with Oracle Engineering Systems with focus in mission-critical and high availability environments. Practical knowledge with Oracle Exadata and Oracle Zero Data Loss (ZDLRA), Data Guard, HA, MAA, including architecture activities like analyses, design, capacity plan, resource management, but also fieldwork like impact estimation, upgrade, patch deploy and patch apply.

Worked to design and implement the first ZDLRA in Brazil, and one of the first of replicated ZDLRA project of the world (2015). The same for Exadata V2 (2010) in Brazil.

Speaker at Oracle Open World 2015 about Zero Data Loss Recovery Appliance.

Founder and board member for Luxembourg Oracle User Group (LUXOUG).


Flora Barriele

My name is Flora Barriele, I have an MSc in Computer Science from the University of Paris. I worked for 6 years as an IT operations engineer in a big telecommunication company. I then moved to Switzerland to start working as an Oracle Database administrator and I am hooked since then ! I love learning and also enjoy sharing. I am committed to encourage women in technology, inspire more girls to work in IT and promote diversity. Besides that, I enjoy traveling around the world, going to concerts, and dancing.


Franck Pachot

Passionate about database technologies, principal consultant and database evangelist at dbi-services.com
Certified AWS Database Specialty and Oracle OCM12c as well as Oracle ACE Director and AWS Academy educator.



Gianni Ceresa

A Data enthusiast more widely interested in BA/DW/EPM solutions with a special focus on Oracle products and solutions. Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 10 years of experience in multiple project roles like architect, analyst, team lead and developer, bridging together the business and the technical side of the BA world. His other activities include OAC/OBIEE training delivery, R&D, blogging and supporting the Oracle community on the forums and by presenting at multiple events.


Gustavo Gonzalez is IT Convergence’s Chief Technology Officer (CTO) leading internal Cloud SaaS implementation as well as helping customers on their journey to the cloud.
Gustavo as a Chief Technology Office from IT Convergence and Oracle ACE Director has delivered presentations in more than 200 conferences around the world in more than 25 countries in North America, Europe, Latin America, and Asia.


Hans Viehmann is working for ORACLE Corporation as Product Manager for the Oracle Spatial and Graph technologies on both the database as well as the Big Data platforms.

He holds a degree in Physics from Hamburg University and started his career in Research before joining ORACLE over twenty-five years ago. After various positions in Presales and Business Development, he joined the Product Management Team in 2011. He is responsible for the outbound product managers on the Oracle Spatial and Graph team. With his team, he is looking after strategic projects and partnerships, the marketing activities, as well as the internal awareness around the Spatial and Graph technologies worldwide. He is working closely with various Oracle User Groups and helped establish Spatial and Graph Special Interest Groups in several countries. He is a regular speaker at conferences and user group events and serves on the advisory board of InGeoForum, Germany.


Heli Helskyaho is the CEO for Miracle Finland Oy. Heli holds a Master’s degree (Computer Science) at the University of Helsinki and she specializes in databases. At the moment she is working on her doctoral studies, researching and teaching at the University of Helsinki. Her research areas cover Big Data, multi-model databases, schema discovery and methods and tools for utilizing semi-structured data for decision making.
Heli is an Oracle ACE Director, an Oracle Groundbreaker Ambassador, and a frequent speaker in many conferences. She is the author of Oracle SQL Developer Data Modeler for Database Design Mastery (Oracle Press 2015) and a co-author of Real World SQL and PL/SQL: Advice from the Experts (Oracle Press 2016).
Heli was listed as one of the TOP 100 influences on the IT sector in Finland in 2015, in 2016, in 2017, in 2018, and again in 2019.


Jacek Gębal

Jacek is the owner, maintainer & co-author of utPLSQL v3.
He has been a software developer since 1998 with primary expertise is development of Oracle PL/SQL and SQL code.
He is passionate and obsessed with automation, software testing and responsible software engineering.
For over two years, Jacek was an active user and contributor to ruby-plsql and ruby-plsql-spec unit testing framework for PL/SQL.

Jacek has been advocating for testing as part of the database development life-cycle since 2011.
He had experiences with several testing frameworks including ruby-plsql-spec, Cucumber, Fitness, utPLSQL v2 & v3 and others.

Technologies or Products Used: utPLSQL, Oracle Database, SQLDeveloper, SQLcl, Sonar, Jenkins, Travis, Github


Jasmin Fluri is an independent consultant at Schaltstelle GmbH and lectures on software engineering and code review at the University of Applied Sciences North-western Switzerland. Her focus as a database developer and DevOps engineer lies on continuous integration and delivery pipelines, automation of recurring tasks, PL/SQL development, data engineering and data warehousing. She is part of the Oracle ACE Program as an Oracle ACE.


Jeff Smith

I’m the product manager for SQL Developer, ORDS, SQLcl, SQL Developer Web, and SQL Developer Data Modeler. I’ve been helping build database development tools since 2001, and I’m obsessed with user productivity and satisfaction.


Jeroen Kloosterman
Jeroen is a Product Strategy Manager for Oracle Digital. He is responsible for sales play selection and development, sales force enablement, business development and he has an advisory role for enterprise customers when it comes to AI and Analytics. He promotes digital selling methods and analytics within Oracle itself to improve the sales function and he is an advocate for machine learning using Oracle .

He launched his career as a Business Consultant where he implemented Oracle technology for enterprises throughout Europe. Later he evolved in Oracle: first to Sales Engineering, then Business Development and now Product Strategy.

Jeroen’s academic background includes a degree in Business Information Systems.


Jim Czuprynski has nearly four decades of professional experience in his career in information technology, serving diverse roles at several Fortune 1000 companies before becoming an Oracle DBA in 2001. He was awarded the status of Oracle ACE Director in March 2014 and is a sought-after public speaker on Oracle Database technology features, presenting often at Oracle OpenWorld, IOUG COLLABORATE, ODTUG Kaleidoscope, Hotsos Symposium, Oracle Development Community tours, and Oracle User Group conferences around the world.
Jim has authored over 100 articles focused on facets of Oracle Database administration to his credit since 2003 at databasejournal.com and IOUG SELECT. He has also co-authored four books on Oracle database technology. Jim’s blog, Generally … It Depends , contains his regular observations on all things Oracle and the state of the IT industry.


John Beresniewicz is an Architect in the Enterprise and Cloud Manageability group at Oracle, currently working on OCI Native services for Autonomous databases.

In his previous service with the company, he was a principal architect for core DB performance management features exposed in Enterprise Manager (Performance Page, Top Activity, Enterprise Loadmap, ASH Analytics, ADDM, SQL Tune, SPA, RAT).

Prior to joining Oracle in 2002 he was co-founder and lead architect at Savant Corporation, and even further back he was an Oracle 7/8/9 DBA.


 Jose Rodriguez is a project engineer at Pythian and Oracle ACE Associate with deep expertise in a wide range of technologies including Oracle, SQL Server, DB2 and PostgreSQL databases and BigQuery. He is passionate about technology and is always looking for the latest tool that will enhance future projects, and deliver faster and better results for his clients.

Before he joined Pythian, Jose was a Database Administrator at Arumel, where he gained in-depth knowledge of Oracle RAC, in addition to a wide range of other database technologies.

Throughout his career in IT consulting Jose has amassed a broad range of knowledge. His colleagues, peers and clients benefit from his varied experiences and ability to find solutions to difficult problems. Jose has worked with a diverse customer base – from the smallest single database company to large, worldwide 24×7 businesses such as Inditex and General Electric.


Julian Dontcheff is the Global Database Lead of Accenture and has more than 30 years of database experience. He is the first Oracle Certified Master in Europe (back in 2002) and he is also an Oracle ACE Director.



Julian Frey is working since more than 10 years as an Oracle Database Consultant in different companies all around Switzerland. He is also founder of the Oracle Beer Bern Meetup Series. Julian is a member of the Oracle ACE Program as an Oracle ACE.


Karilyn Loui is a Principal Product Manager at Oracle. She has more than 20 years of experience spanning across multiple Product and Engineering roles. She started her career at Oracle as a Product Manager for Oracle Application Testing Suite, an integrated testing solution for Web applications and Web Services. She currently manages Oracle Enterprise Manager, the market-leading management platform that provides a single dashboard to manage all of your Oracle deployments, in your data center or in the cloud. Through deep integration with Oracle’s product stack, Oracle Enterprise Manager provides automation support for Oracle Applications, Databases, Middleware, Hardware, and Engineered Systems. Karilyn’s domain expertise is in Enterprise Monitoring, which serves as a foundation for monitoring all components of the IT infrastructure as well as applications and services that are critical to business operation.

Kamran Aghayev A. is an Oracle Certified Master (10g/11g), Oracle Clusterware Certified Expert and RAC Implement Specialist (11g/12c), Oracle Certified Professional (9i,10g,11g,12c) and Oracle ACE Director working as a Data Management team head at AzerCell Telecom. He’s responsible for managing critical databases and building high-available Big Data environment, administering Hadoop clusters and using different technologies like Spark, Hive, Kafka, Scala, Impala, Flume and hands-on experience with RDBMS databases like Oracle, MS-SQL, MySql, PostgreSQL and NoSQL databases like Cassandra, Redis, MongoDB and HBase
Having experience in a wide range of mission critical technologies, specializing in best practices for Oracle Exadata, Real Application Cluster, ASM, Data Guard, Performance Tuning and Backup and Recovery he’s authored two books : “Oracle Backup and Recovery: Expert secrets for using RMAN and Data Pump” and “Study Guide for Oracle Certified Master 11g Exam: A Comprehensive Guide”.
He is President of Azerbaijan Oracle User Group (AzerOUG) and runs a popular blog  where he shares his experience and contributes fairly regularly to newsgroups, forums, and user group meetings and events around the world.
He is a frequent speaker and presented in many countries, most recently at the USA, Japan, Thailand, China, India, Argentina, Uruguay, Panama, Costa Rica, Mexico, Guatemala, Finland, Germany and Turkey.


Kevin Wittek

Testcontainers co-maintainer and Testcontainers-Spock author, in love with FLOSS. Received the Oracle Groundbreaker Ambassador award for his contributions to the Open Source community. Software Craftsman and testing fan. Plays the electric guitar and is a musician in his second life. Found his own company during his university years, developing mobile apps and client-server applications, which introduced him to Grails and the Groovy ecosystem. Fell in love with TDD because of Spock.

After many years working in the industry as an engineer, Kevin is now doing his PhD at the Institute for Internet Security and is leading a research team in the field of blockchain technology.


Kim Berg Hansen is a database developer from Middelfart in Denmark. Originally wanting to work with electronics, he almost coincidentally tried computer programming and discovered where his talent lay, as the programs he did worked well – unlike the electronics projects he soldered that often failed. After that experience he progressed from Commodore Basic on VIC-20 over Modula-2 and C at Odense University to Oracle SQL and PL/SQL, which last two languages he now has worked with extensively since the year 2000. His professional passion is to work with data inside the database utilizing the SQL language to the fullest to achieve the best application experience for the users.

Kim shares his experience and knowledge by writing the Practical Oracle SQL book, blogging, presenting at various Oracle User Group conferences, and being the SQL quizmaster  at the Oracle Dev Gym. His motivation is when peers go “*now* I understand” after his explanations, or when end users “can’t live without” his application coding. He is certified Oracle OCE in SQL as well as awarded Oracle ACE Director. Outside the coding world Kim is married, loves to cook, and is a card-carrying member of Danish Beer Enthusiasts association.


Lino Schildenfeld

Oracle APEX consultant with 15+ years of experience. Consulted for APEX R&D, for-all-a-beautiful-earth and Skillbuilders team. Worked with clients in Europe, USA, Asia, Australia and New Zealand across all sectors. AUSOUG Connect APEX content chair, webinar organizer, speaker at KSCOPE, APEX Connect, APEX ALPE Adria, AUSOUG, MAKEIT, HROUG & APAC conferences. APEX blogger and Oracle ACE.


Liron Amitzi is an Oracle ACE Director and a senior Oracle DBA consultant, with more than 20 years of experience. During these years Liron worked as a senior consultant with a large number of companies in various fields and managed an Oracle Professional Services Team. He mainly specializes in high availability solutions, performance, backup and recovery, and other infrastructure and application database areas.
Liron is the president of BCOUG (British Columbia Oracle User Group), and he is also a well-known instructor and lectures in Oracle courses, events and forums.


Luc Bors is Oracle ACE Director and Groundbreaker Ambassador. He works as Head of Innovations at eProseed, where he is also Partner and Technical Director. His main area of technological interest is at Emerging Technologies such as IoT, AI and Cloud, and he is specialised in UI Web and Mobile Development. Luc is a regular presenter at international conferences and he authored books on Oracle Mobile Development and Oracle Digital Assistant


Lucas Jellema is solution architect and CTO at AMIS and member of the Conclusion Architecture Board, The Netherlands. The running theme through most of his activities is transfer of knowledge and enthusiasm (and live demos). Lucas is JavaOne 2015 Rockstar, Oracle Groundbreaker Ambassador and ACE Director and a frequent speaker at conferences such as Oracle Code, Oracle OpenWorld, CodeOne (JavaOne), Devoxx and on Groundbreaker tours.. He publishes techy stuff at Github, Medium, Slideshare, DZone, OTN, and the AMIS Technology Blog . He is the author of two books with O’Reilly Press.


Ludovico Caldara is an Oracle ACE Director and database specialist with 17 years of experience on the full Oracle stack (Clusterware, DataGuard, RAC, ASM, EM). He has administered literally thousands of databases in big datacenters so he has developed a natural leaning to automation, monitoring and high availability. He is certified on Oracle 12c (OCP,OCE) and MySQL 5 (OCP). He is an active blogger, frequent speaker and a confirmed Community contributor: board member of the Swiss Oracle User Group, president of the RAC Special Interest Group and co-founder of the Italian Oracle User Group.
Ludovico is currently working as a senior consultant for Trivadis in Lausanne, Switzerland.


Maarten Mulders

Passionate architect, senior developer and trainer. Passionate about “building the right thing” and “building the thing right”. Focusing on lean and elegant solutions. Love to share new ideas and knowledge. Outside work, I appreciate preparing and consuming good food, photography, and music, in no particular order.


 Malay Kumar Khawas

Oracle CIO Award Winner, Malay Kumar Khawas is a skilled Oracle Consultants and Oracle Enterprise Architect.

Malay amplifies business results using his extensive experience on Oracle Engineered System, Oracle Cloud Infrastructure, Oracle Identity Management, Oracle Database Administration and Oracle EBS Administration.

He employs technology to support the blend of innovation and development.

His never ending desire to learn makes him unrivalled in today’s high-tech industry.

He weaves IT solutions at the Cloud Solution Hub Bangalore to ensure the best enterprise architectures for various Oracle customers.

Malay, a renowned technophile and distinguished speaker has lead numerous Oracle’s engagements.

His mantra is to master new technologies and share it with the world to make technology and life simple at workplace.

Major Technical Expertise:

  1. Oracle Cloud Infrastructure (DBSystem, ADB, EBS, IaaS)
  2. Oracle Identity Management and Identity Cloud Services
  3. Oracle eBusiness Suite
  4. Oracle Enterprise Manager for OnPremise and Oracle Cloud
  5. Oracle Database Administration, Migration, Performance Tuning and Security Specialist
  6. Engineered System (Exadata, ExaCS, ExaCC, ODA and ZDLRA)
  7. Disaster Recovery and High Availability


Marcin Przepiórowski

My name is Marcin Przepiórowski. I’m working with Oracle technology stack since 2001. I’m interested in three areas – automation/cloning, high availability (DataGuard, RAC, etc) and performance monitoring and troubleshooting. For last 10 years I’m involved in OUG community and blogger community. I presented on many OUG conferences. I’m a proud member of OakTable.


Marcus Vinicius Miguel Pedro is an Senior Oracle DBA and has several Oracle Certifications. Marcus Vinicius has more than 15 years working with Oracle Products, focusing in Oracle Database, since version 8. It’s a specialist in design and implement high-availability solutions for Oracle Databases in the platforms: Linux, HP-UX, Solaris and AIX. Also, has great expertise in recover databases due disaster situations. Marcus Vinicius was also responsible to identify issues with performance and worked in tuning the performance issues to achieve better performance in databases. Marcus Vinicius has also great experience working with definition and implementation for backup and recovery policies. In 2010 become Oracle ACE. Since 2010 is a board member for Brazilian Oracle Users Group (GUOB). In 2014 Marcus became an ACE Alumni because started workign for Oracle ACS Brazil. In 2018 Marcus joined Accenture Enkitec Group and was nominated an Oracle ACE again in 2019.

He is a frequent speaker in some events: Oracle OpenWorld San Francisco 2019, Oracle OpenWorld Latin America (Sao Paulo), GUOB TechDay / Groundbreakers Tour (2011, 2013, 2017, 2018 and 2019), GUORS, Colleges, MeetUps.


Mike Dietrich

Based in Bavaria, Germany. >25 years IT experience. Database Upgrade and Migration specialist, currently in the role of a Master Product Manager working for Oracle for over 20 years. Interlink between customers/partners and the Oracle Upgrade Development. Holding technical workshops between Arctic and Antarctica. Assisting customers in their reference projects onsite and remotely worldwide. Troubleshooting upgrade and migration issues. Eager to learn something new every day. Experienced conference speaker. Music lover. LP/vinyl enthusiast. Mountain hiker. Runner.


Neil Chandler

cl;dr Database Guy. Know things.
Neil Chandler is an independent consultant, and has been working in the field of databases since 1988, initially with IMS DB/DC and DL/1 (which are a bit like NoSQL) on IBM Mainframes and with Oracle, SQL Server, MariaDB and Couchbase over the last 25 years. He is also familiar with Operating systems (Linux/Unix/Windows) and has done his fair share of coding in languages such as Cobol, 360 Assembler, Shell script, PL/SQL and Python.


Oren Nakdimon is an Oracle ACE Director with 27 years of extensive and continuous experience with Oracle-based systems, as a developer, DBA, manager and instructor. Oren gained lots of knowledge about databases in general, and Oracle in particular, and likes sharing it – by blogging , tweeting (@DBoriented), presenting in local and international conferences, and more. He believes in good collaboration between developers and DBAs, and tries to bridge the traditional gaps between these two worlds. Since 2012 Oren is responsible for the database development and administration in Moovit.


Osama Mustafa is Founder of Gurus Solutions Company, Oracle ACE Director , Creator/Director of Jordan Amman Oracle User Group the first Group in Jordan related to oracle technology, Author of the book Oracle Penetration Testing, Osama has been working on project and customer support in EMEA Region, Providing Database Implementation Solutions, his specialties Fusion middleware, In memory database Timesten, Exalytics and Exalogic machine, Include to this Osama Is frequently Speaker in Oracle User Groups around the world and one of RAC ATTACK event organizer, Fusion middleware ATTACK Organizer as well, he published articles in Oracle Magazine, OTECH magazine and UKOUG Oracle Scene magazine, Also he is Blogger and Certified Oracle Database and Fusion middleware, he assists with sharing his knowledge at conferences, webinars, white papers ,slide share and blog posts to the Oracle community, Simply he is Oracle passionate, International Speaker in Oracle user group.


Patrick Barel is a PL/SQL Developer for Qualogy [http://www.qualogy.com/] in the Netherlands. Besides working with SQL and PL/SQL he wrote different plug-ins [http://bar-solutions.com/] for PL/SQL Developer [http://www.allroundautomations.com/]. He publishes articles on his own blog [http://blog.bar-solutions.com/].
In 2015 he received the Oracle Developer Choice Award in the PL/SQL Category.


Philipp Salvisberg is a senior principal consultant, partner and member of the boards of directors at Trivadis and an Oracle ACE. He has been focusing on Oracle database based solutions since 1988. At that time with Oracle Database version 5. Since then, he is helping customers design, build and optimize their database centric solutions, teaching application development topics or speaking at conferences.

Philipp has a soft spot for doing as much as possible in a single SQL statement and is interested in pretty much everything to use the database as efficiently as possible. He likes to design model-driven software solutions using domain specific languages, while getting the most out of the underlying technologies.


Piet de Visser is an experienced Database Consultant and DBA specializing in Oracle databases,
High-Availability and troubleshooting.
He is in IT since 1987, works with Oracle databases since 1994.
Independent since 2013, he now looks for short-term or part-time consulting assignments.

Piet combines technical knowledge with experience in global organizations.
His energetic personality, curiosity and language-skills make him ideal for pioneering projects or troubleshooting IT problems in a multi-national environment.
Piet also invests a lot of effort in maintaining a network of Like-Minded Oracle specialists worldwide and is a regular speaker at international user group events and symposia.
Oh, and Piet has a preference for Simple solutions.


Richard Martens has been involved in information technology for more than 15 years.
He started as a web developer using the Oracle database as no more than data storage. Richard has been responsible for major European multilingual websites and has been working with the Oracle database since 2000. During those years, he developed himself using a multitude of technologies and specialized in PL/SQL and Oracle APEX.
With APEX, he combines the things he loves most: the Oracle database and web technologies.

Richard has been granted an Ace award in 2015.

Richard has a special interest in UX/UI and is an expert in the fields of APEX, PL/SQL, JavaScript, XML and related technologies.


Robert Marz is an Oracle ACE and Idependent Consultant.

At customer sites, he works as a Senior Technical Architect with a database-centric view of the world.

Robert is Co-Founder and Co-Owner of Databee – The IT-Architects, a Germany based professional services company.

At DOAG (the German Oracle user group), he is in charge of the Cloud topics inside the database community.

Robert is a member of ODTUG, IOUG, DOAG and RMOUG.

More than twentyfive years of experience in custom development and data warehouse projects makes him a specialist in Oracle database development and administration.
Additionally, he is skilled in the fields of scripting languages, operating systems, virtualization and cloud technologies.

Robert Marz publishes articles and papers in various publications, maintains the its-people portfolio blog and frequently speaks at mostly German conferences.



Rodrigo Mufalani

Rodrigo is an Oracle Certified Master 11g (OCM), with more than 17 years of experience on Oracle Technologies. He works as Principal DB architect for eProseed Europe, an Oracle Platinum Partner company. Founder and chairman of LuxOUG, he is also known for his many contributions to the Oracle’s community by speaking at OUG events, publishing and sharing his knowledge on his blog , on twitter @mufalani and on LuxOUG portal. Since 2009, Rodrigo has been yearly awarded by Oracle as an Oracle ACE Member.


Rustam Khodjaev is a founder and CEO of A1 Project. A1 Project is an IT consulting company specializing in Oracle Products and DBA services. He is a Founder and President of the TAJOUG (Tajikistan Oracle User Group). Rustam has been working with Oracle technologies since 2005, particularly with Oracle Database and Engineering Systems. He has experience in implementing and administering Oracle databases for Core Banking and for the Processing Center Systems, as well as experience in implementing and administering high-availability information systems and administering Exadata Database Machines. He has PhD in Computer Science and gives lectures at the two major technical universities in Tajikistan since 2007 – Tajik Technical University and Branch of Branch of Lomonosov Moscow State University in Dushanbe. His courses at the Universities are: Database, Operating Systems and System Administration. He launched and implemented Oracle Academy in these two universities of Tajikistan. It was the first practical implementation of the Oracle Academy Education Program in Central Asia. He uses in his lectures and lab materials from Oracle Academy Program, such as Oracle Autonomous Database and Oracle Cloud Infrastructure, SQL Developer, SQL Developer Data Modeler, APEX and presentations. 


Sabine Heimsath studied Information Science in Münster where she discovered her love for spreadsheets, relational databases and data modelling. After her diploma in 1999 she started her professional career with Oracle Consulting in Frankfurt. Working for several customers she developed her skills in PL/SQL, Java and WebDB (yes, it’s been a while :-)).
After another year doing product development she decided she wanted to be in consulting again and became a freelancer with its-people GmbH. Since then, Sabine has done many projects in different industries, which are all centered around the Oracle Database, be it Reporting, Migrations, Application Development with **APEX** or pure **PL/SQL**. **SQL Developer** has become one of her favourite tools.

She is a blogger, trainer and speaker at different conferences like DOAG, APEX Connect and UKOUG and organises the **APEX Frankfurt Meetup**. Besides, she is a member of the DOAG Development community and happens to be Germany’s first female ACE.

Sabine loves Lego and fantasy literature.


Samuel Nitsche is a curiosity-driven software developer with nearly 20 years of experience. His main interest is on modern database development, automated testing and code quality, topics he writes regularly about on different platforms.
He is one of the main contributors and maintainers of utPLSQL (http://utplsql.org) and loves to share his experience in an entertaining way – gladly in Sith robes – at meetups and conferences.



Sandesh Rao is a VP running the AIOps Automation for the Autonomous Database Group at Oracle Corporation specializing using AI/ML for different usecases from predicting faults before they happen to Anomaly Detection within log data , metrics data. His previous positions have focused on performance tuning , high availability , disaster recovery and architecting cloud based solutions using the Oracle Stack. With more than 18 years of experience working in the HA space and having worked on several versions of Oracle with different application stacks he is a recognized expert in RAC , Database Internals , PaaS , SaaS and IaaS solutions and solving Big Data related problems . Most of his work involves working with customers in the implementation of public and hybrid cloud projects in the financial , retailing , scientific , insurance , biotech and the tech space. He is also responsible for developing assessments for best practices for the Oracle Grid Infrastructure 19c including products like RAC (Real Application Clusters) , Storage (ASM , ACFS).


Sven Ruppert has been coding Java since 1996 in industrial projects working as Developer Advocate for JFrog and Groundbreaker Ambassador (former Oracle Developer Champion). He is regularly speaking at Conferences worldwide and contributes to IT periodicals, as well as tech portals.
He was working over 15 years as a consultant worldwide in industries like Automotive, Space, Insurance, Banking, UN and WorldBank. Additional to his main topic DevSecOps he is working on Mutation Testing of Web apps and Distributed UnitTesting besides his evergreen topics Core Java and Kotlin.


Tim Hall is an Oracle DBA/Developer and well known Oracle blogger.

If that isn’t enough, he’s written two books and over 1,000 articles, is an Oracle ACE Director, Oracle Groundbreaker Ambassador, OakTable member and has presented at numerous user groups and conferences worldwide.


Valentin Leonard Tabacaru is a Principal Product Manager at Oracle. He supports Oracle Database server technology programs to drive the adoption of products and cloud services, maintains and develops exchanges with Product Management teams, helps partners validate and certify their applications, delivers briefings, webcasts, and hands-on workshops.

Valentin also helps strategic partners and customers by handling technical request assignments. During his 12+ years at Oracle, he delivered a large number of technical seminars and workshops, presenting Oracle solutions at major events. His mission is to inspire people implement new technology and manage change within their data centers. His sample configurations have been used in hundreds of implementations world wide.

When not connected to a database, he likes mountain biking, rollerblading, and flying small aircrafts. Sometimes, he finds it easier to recover from a stall than from a database server crash.

Venkanna Mittakanti

I am an Oracle ACE. I have over 22 years of experience working with Oracle E-Business Suite and Oracle technologies, focusing on implementing, designing, developing and maintaining of Oracle Applications, since 2002. Has been leading & participating in numerous Oracle EBS Release 11i & 12 implementations, upgrades, re-implementations, custom solutions and assessments. I have worked at Oracle Corporation for the EBS product development in various roles as Senior/Lead Tech Analyst and Manager (Apps Tech) from 2000 to 2006. Specializing in Supply-Chain modules implementations and solutions since 2012.

I have been extensively involved in the OATUG community and holding board positions for the regional users groups and special interest groups. I present regularly at the Oracle ERP User Groups regional and COLLABORATE conferences. I write Oracle ERP BLOG (https://www.vm-oracle.com/) as well. Lately focusing on Artificial Intelligence, Machine Learning, Internet of Things (IOT), Robotics Process Automation(RPA) andBlack Chain Technologies. Currently the Lead Oracle Apps Analyst at Siemens Corporation, since 2009.

Zoran Sevarac is an Associate Professor at the University of Belgrade, AI researcher and CEO at deep learning company Deep Netts.
His main domains of work include software engineering and artificial intelligence, specifically Java and deep learning.
He is a Java Champion, one of the 200 most influential Java community leaders.
He is also one of the leaders of the expert group for Java technology standard for visual recognition and machine learning JSR381.