Oracle OTN Tour 2017 Sao Paulo: Getting Started with Java Cloud Service (JCS)

At the 2017 OTN stop in Sao Paulo I did my first presentation to help customers to get started with Oracle Java Cloud Service (JCS).

 There are  actually a few showstoppers that make customer’s experience more difficult than it should be in my opinion. I will blog about them later in autumn – for now please have a look at my presentation on Slideshare.

 

OTN Tour Latin America 2016: Chile

Oracle Technology Network Tour Latam 2016:
Santiago de Chile

The conference in Chile was exceptional for a couple of reasons. For the first time ever I met German, the tech reviewer of my WebLogic 12c book. A great guy (not sure if he wants to read his name here – just get the book, he is in the acknowledgement!) who did a brilliant job in editing the 12c book. We had lunch together with his friends from Oracle ACS and the best I can say it felt like friends you know for years and not somebody you met 30 minutes ago. It was a pleasure meeting you guys!

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Conference

The conference itself was the University San Sebastian in Bellavista area. Quite a few presentations were running in several rooms in parallel.

Also Santiago is great. From every traffic jam you can see the mountains! It is really a pity I couldn’t go to any more remote places like Atacama desert or Torre de Paine. Anyway both are now top on my to-travel list. My friends know what this means. Stay tuned.

Again I did a Docker live demo. The audience seemed to like it, what do you think? Also the room was big enough for big ideas. Big thank you to CLOUG and Felipe Manriquez.

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The non Conference Part

I did not really have a lot of time for sightseeing but I managed to nip out and have a seafood lunch at the Mercado Central before heading to airport. Actually a memorable drive, since the Uber driver was driving alongside the runway but was not able to find the airport 🙂

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OTN Tour Latin America 2016: Brazil

Oracle Technology Network Tour Latam Sao Paulo

I attended the 2016 OTN Tour Latam. First stop was Brazil which was on my personal to-travel list for a long time. Still I hesitated for many years to finally go to Brazil because it was clear to me that I wouldn’t be able to communicate a lot. Earlier this year managed to learn about 16 words in ภาษาไทย – which by the way got me one of the best laughs of the last 5 years in one of the city’s swankiest rooftop bars. So guys, learn languages!

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My Personal Challenge

Anyway, I sometimes like challenges and my plan for Brazil was to be able to speak some 100 words of Portuguese. After a bit of research, I quickly found a teacher in Munich (Bom dia, Chris!), studied and finally managed to achieve at least 50% of my goal (blame the usual boring excuses for missing the other 50%, but I was still better off than 95% of all other travellers).

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GOUB Tech Day: OTN Tour

The conference including the auditories were very good. I met many old friends, made too many new friends to list them all here, listened to great presentations from colleagues, and we had a wonderful, meaty conference dinner with a good selection of drinks. Actually I enjoyed everything, maybe except the surprisingly unfriendly and unprofessional reception at Blue Tree Morumbi Hotel.

goub

I did a presentation about Oracle WebLogic (12.2.1) 12c and one about Docker.

Have a look at the pictures gallery here to get some more impressions! Slides will be uploaded in a few days.

 

 

Zero Downtime, REST, Domain Partitions / Multi Tenancy, Elasticity and WLDF. WebLogic 12.2.1 (12c)

I just finished a two week long hands-on consulting session for some pretty experienced application managers and architects.

In 5 days we explored WebLogic 12.2.1 extensively:

  • Zero Downtime
  • REST
  • Domain Partitions / Multi Tenancy
  • Resource Group Management
  • Java Mission Control
  • WLST
  • Elasticity
  • JMS Clustering
  • WLDF

 

p1

Here is some feedback from the group. You can tell we had fun, although we worked very hard.

Screen Shot 2016-07-04 at 10.43.06

 

This is how a happy group looks like.

group2

 

People seemed to be happy, here is what they liked.

Screen Shot 2016-07-04 at 10.44.13

For more details download the flyer from the Oracle WebLogic Server 12.2.1 (12c) course site.

Scaling Failure with Elastic Cluster in Oracle WebLogic Server 12.2.1 (12c)?

The Issue

When you manually scale an elastic cluster let’s say from 2 to 3 there is no issue. Then try scaling the cluster from 3 to 4 and WebLogic admin console will report “FAILED”.

 

How it really Works

Actually it is not broken, it just doesn’t do what you expect it to do because of the cool down period for cluster scaling that has a default value of 900 seconds. This setting is useful to prevent oscillating cluster sizes (possibly due to conflicting rules).

elastic_cluster_fail

You can set this value yourself under Cluster / Configuration /

cooloff

 

What should Oracle Do?

Oracle should change the state from FAILED, to COOLDOWN_PERIOD or so.