Oren Nakdimon
@DBoriented
Oracle ACE Director; Fellow, Database Architecture at @moovit; Opinions are my own.
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![ora600pl's profile picture. [OakTable member] [Oracle ACE Director & OCM] [Oracle Database Whisperer, performance maker and story teller] [founder and board member of POUG]](https://pbs.twimg.com/profile_images/454641452963078144/vtysjFEo_x96.jpeg)
Edition-based redefinition enables zero-downtime app upgrades for Oracle AI Database @DBoriented discusses why it's worth using when offline upgrades are OK: Any time or length upgrades Separate database & app upgrades Flexible release of new versions db-oriented.com/2024/12/30/ebr…
Today marks the countdown of two weeks until the Database Cloud and Developer Day. Will you be joining us there? Visit: nloug.nl/en/events/autu…
Join us for the Database Cloud and Developer Day on November 13th at Oracle HQ in Utrecht. A few seats are still up for grabs for DC&D! Secure yours now before they're all taken. Visit nloug.nl/en/events/autu… for more information. #Database @Oracle #Developer #Cloud #DCD26
Get ready for #HROUG2025! 🎉 From October 15–18, HROUG will bring together the Oracle community for an unmissable conference packed with knowledge, networking, and innovation. This year, a remarkable group of Oracle ACEs will be attending—making it a unique opportunity to learn…
Looking forward to be at #HrOUG2025 🤩 A great conference, with excellent venue, content, speakers and attendees! See all the details here: 2025.hroug.hr/eng @Hroug_Croatia @oracleace @oracleugs
Joel Kallman Day 2025 : Announcement oracle-base.com/blog/2025/09/2… #JoelKallmanDay @oracleace @OracleAPEX #orclapex @OracleDatabase
The biggest so far! 30 years of tradition / +100 lectures / +80 lecturers / 6 halls / 3 evening parties / excellent networking / Great location Agenda: 2025.hroug.hr/eng/Agenda From October 1st, ticket prices are 10% higher – Hurry up! 2025.hroug.hr/eng/Tickets
Every ride matters. 🚍 Moovit, in partnership with, @Greenlines_Tech, just launched a decarbonization project turning daily low-carbon commutes into verified carbon credits that may help corporations hit sustainability goals. 🌱 Learn more: moovit.com/sustainability/
Honored to be chosen as "Speaker of the Day" by @SessionizeCom . I'm grateful for the opportunities to share knowledge, learn from others, and engage with the amazing tech community. #PublicSpeaking #KnowledgeSharing #Oracle @oracleace @sym_42 @moovit @iloug_org @oracleugs
I've just written a SQL query that uses GROUPING SETS and the COLLECT function, and it fails with ORA-3001 (unimplemented feature). I googled it and the first result showed that I had already discovered it 6 years ago 😳 db-oriented.com/2019/06/29/gro…
db-oriented.com
GROUPING SETS and COLLECT Don't Get Along - @DBoriented
I’ve recently got reminded that assuming something will work, just because it makes sense, doesn’t mean it will really work. While reviewing some code a few days ago, I saw a query of the following...
📰 Check out my reading list for the 2nd week of July 2025 geraldonit.com/reading-list-j…
geraldonit.com
Reading List – July 2025 #1
🎉 Oracle Database@AWS Now Generally Available – Oracle announced the General Availability of Oracle Database on AWS. 📰 Mixed Feelings About MERGE – DBoriented talks about his “lik…
A new post (about an old feature) - "Mixed Feelings About MERGE" db-oriented.com/2025/07/12/mix… @oracleace #ACED @sym_42
db-oriented.com
Mixed Feelings About MERGE - @DBoriented
Why Oracle's MERGE Statement Fails Where INSERT/UPDATE Succeeds
Excited to have my article on Oracle Constraint Creation Optimization in the latest issue of @nl_OUG 's magazine, alongside articles by @thtechnology and @lucb_. Check it out: nloug.nl/en/nloug-visie… @OracleDatabase #optimization #performance #availability @oracleace @sym_42
המפגש הקרוב של #ilOUG - קהילת משתמשי אורקל בישראל - יתקיים ביום שלישי 17/6/2025 בין השעות 14:00 ו-18:00, במשרדי אורקל בפתח תקווה. ההשתתפות במפגש אינה כרוכה בתשלום, אולם מחייבת רישום מראש, על בסיס מקום פנוי. לפרטים והרשמה: docs.google.com/forms/d/e/1FAI… @oracleace @oracleugs @OracleIL
The CfP for #octemea25 is open for 2 more weeks. Have you submitted yet? tinyurl.com/octemea25 @oracleace @oracleugs
Join ITOUG Tech Day 2025 this week in Milan. The streams will include Database, APEX, and Analytics & AI. Register for free and hear from many great ACE speakers ♠️ 👉 social.ora.cl/6019ND3BU #OracleACE @IT_OUG
OUGN 2025 is right around the corner! Join the largest Oracle conference in the Nordics from 14 to 16 May. Join the speakers on a 2-day cruise filled with cutting-edge Oracle technology, insights, expert-led sessions, and great networking opportunities! 👉…
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