I’ll be there! Oracle Groundbreakers Yatra 2020 Online

Hi all!

I’m happy to let you know I’ll be speaking on this year’s Yatra Tour!

Session Title:   Tips & Tricks from 20K+ hours DBA on call
Scheduled Date: 13th July 2020
Scheduled Time:  18:00 to 19:00 IST (Indian Standard Time) UTC +5:30

Duration:  50 Minutes + 10 mins for Q&A
Track: Database (DBA) Track
Virtual Platform: Zoom Webinars

NewScreenshot 2020-06-15 às 11.57.30

I’ll be sharing information to subscribe to the event soon, stay sharp!


AIOUG Live with Jim Czuprynski: What’s Your Super-Power? Mine is Machine Learning with Oracle Autonomous DB (June 3rd 6PM IST)


I just noticed this is happening tomorrow! Found by accident on the internet, but saw in person a similar session from Jim in some past events (when we attended in person) . You not retreat to attend this one!

Date : 3-JUN-2020
Time :06:00 PM IST

Session Abstract:
Artificial Intelligence (AI) and Machine Learning (ML) are a lot like preserving the Earth’s environment: Almost everyone is talking about what should be done to save it, but very few people have committed to actually doing something about it.

This session demonstrates a few real-life opportunities to discover unseen patterns and relationships within sample financial and election data by leveraging the AI and ML capabilities already built into Oracle Autonomous Database.

Session Outline:
Through presentations and online demonstrations, this session illustrates how to:
– Understand the basics of what AI and ML promise
– Use the built-in ML features of Autonomous Database to analyze data patterns in several dimensions
– Build simple visual models that uncover patterns hidden within data

Speaker Bio:
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 has been an Oracle ACE Director in 2014 and is a sought-after public speaker on Oracle Database technology features, presenting often at Oracle OpenWorld, IOUG COLLABORATE, ODTUG Kaleidoscope, Oracle CODE events, 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 (http://jimczuprynski.wordpress.com), contains his regular observations on all things Oracle and the state of the IT industry. He is currently a Senior Enterprise Data Architect for Viscosity North America.

Registration Link-https://bit.ly/2Akj2gc

Thanks AIOUG for making it happen!

Review: Live GUOB – Qual o Futuro do DBA?

Olá pessoal!

Passo para agradecer a excelente participação nesta Live do GUOB em que batemos um papo sobre o futuro da carreira do DBA.

Foi um prazer trocar uma idéia com os amigos Ricardo Portilho, Rodrigo Jorge, Alex Zaballa, Marcus Vinicius e Franky Weber. Olha só uma foto da Live:

WhatsApp Image 2020-05-26 at 22.06.15

Você perdeu?

Ainda tem uma segunda chance de assistir a gravação aqui, mas sem todo o glamur do ao-vivo e sem chances de fazer perguntas.

Nos vemos na próxima, só valeu!

Review: OCI for Oracle DBA’s: Introduction and Key Concepts


Passo apenas para agradecer a excelente participação no Webinar do GUORS realizado na última quinta-feira. Neste que foi o primeiro evento do GUORS no formato online , discutimossobre a arquitetura do OCI (Oracle Cloud Infrastructure), conceitos-chave e os desafios de um DBA Oracle na conversão de sua carreira para arquiteto Cloud.

  • Título da palestra: OCI for Oracle DBA’s: Introduction and Key Concepts
  • Palestrante: Marcus Vinicius
  • Sobre o palestrante: Marcus Vinicius é DBA Oracle Sênior, Oracle ACE e possui diversas certifiações em Bancos de Dados Oracle. Possui mais de 15 anos de experiência na área. Foi professor de pós-graduação no curso “MBA em Administração de Banco de Dados Oracle” no Veris IBTA, unidades de São Paulo e Campinas. Foi DBA Oracle e Gerente de Operações na Discover Technology e Consultor Oracle Sênior na Oracle (ACS). Atualmente é Consultor Oracle Sênior na Accenture Enkitec Group. Também é conselheiro técnico do GUOB. Mantém um blog sobre Oracle há mais de 10 anos.


Para quem não teve oportunidade de particiar, a gravação do evento realizado já está disponível aqui!


Oracle Code One 2020 Call for Papers is Open!

Hi all!

Is it happening this year? So far we know, yes!

So unless something happens, I’m submitting my paper. Aren’t you?

Before starting your proposal, review the Call for Papers Guidelines and Instructions for submitter, track, and session information, and key dates for Oracle Code One 2020.

The submission tool supports current versions of Firefox, Chrome, and Safari.

Note: When you submit a proposal, you authorize Oracle Code One 2020 to promote, publish, display, and disseminate the content you submit to Oracle, including speakers’ names and likenesses, for use associated with Oracle Code One 2020. Press, analysts, bloggers, and social media users might be in attendance at Oracle Code One 2020.

After you submit your proposal, note your confirmation number (session ID).

Key Dates
(Subject to change)

Oracle Code One Call for Papers — Open March 5, 2020
Oracle Code One Call for Papers — Close June 8, 2020 (5 pm PT)
Notifications for accepted and declined submissions sent Mid July



Click START to Create and Submit Your Proposal

Important: The submission tool times out after 15 minutes of inactivity. If it times out, you’ll lose the submission you were working on.

More info: https://reg.rainfocus.com/flow/oracle/oow20/codeone20cfp/cfpHome

If you have more questions, contact speaker-services_ww@oracle.com

Apache Airflow Schedule: The scheduler does not appear to be running. Last heartbeat was received % seconds ago.

Hello everyone,

Are you facing the same?

Well, after opening some tasks to check Apache Airflow test environment for some investigation, I decided to check Apache Airflow configuration files to try to found something wrong to cause this error. I noticed every time the error happens, the Apache Airflow Console shows a message like this:

The scheduler does not appear to be running. Last heartbeat was received 14 seconds ago.

The DAGs list may not update, and new tasks will not be scheduled.

In general, we see this message when the environment doesn’t have resources available to execute a DAG. But in this case, it is different because CPU usage was 2%, memory usage was 50%, no swap, no disk at 100% usage. I checked the DAGs logs from the last hours and there were no errors in the logs. I also checked on the airflow.cfg file, I checked the database connection parameter, task memory, and max_paralelism. Nothing wrong. Long history short: everything was fine!

I then searched for the message in Apache Airflow Git and found a very similar bug: AIRFLOW-1156 BugFix: Unpausing a DAG with catchup=False creates an extra DAG run . In summary, it seems this situation happened when the parameter catchup_by_default is set to False in airflow.cfg file.

This parameter means for Apache Airflow to ignore pass execution time and start the schedule now. To confirm the case I checked with change management if we had some change in this environment. For my surprise, the same parameter was changed one month ago.

I then changed the Apache Airflow configuration file and set the parameter catchup_by_default to true again. The environment was released to the developers team to check everything is alright. One week later and we don’t have any issues reported.


This issue showed us that the development environment is a no man’s land. The change management process exists alone without an approval process to support it. The lack of an approval process leads us to a 4 hours outage and 2 teams unable to work.

I hope you enjoy it!

And please be responsible on your environments!