Ludovico Caldara
@ludovico.bsky.social
🚫 Data Loss - 💯 Uptime - 🛡️ Data Guard Product Manager at ⭕ #OracleMAA - 💡Opinions are my own - 🏐🏔️🚵🏂🎶👨💻🕹️
Pinned
Oracle (Active) Data Guard – Master Technical Slide Deck
This is the most recent and comprehensive technical slide deck for Active Data Guard.Download the slides here.
www.ludovicocaldara.net
Find the Oracle Data Guard's latest technical deck here:
www.ludovicocaldara.net/dba/slides/o...
More than 200 slides of technical content cover almost all aspects and features, including 23ai new features.
www.ludovicocaldara.net/dba/slides/o...
More than 200 slides of technical content cover almost all aspects and features, including 23ai new features.
If you still try to use this syntax to add a database to the Data Guard broker in 26ai, beware, it won't work:
ADD DATABASE ... MAINTAINED AS {PHYSICAL|LOGICAL}
"MAINTAINED AS" was deprecated in 11.1
docs.oracle.com/cd/E11882_01...
Time to let it go!
ADD DATABASE ... MAINTAINED AS {PHYSICAL|LOGICAL}
"MAINTAINED AS" was deprecated in 11.1
docs.oracle.com/cd/E11882_01...
Time to let it go!
Changed and Deprecated Features
docs.oracle.com
December 18, 2025 at 8:48 PM
If you still try to use this syntax to add a database to the Data Guard broker in 26ai, beware, it won't work:
ADD DATABASE ... MAINTAINED AS {PHYSICAL|LOGICAL}
"MAINTAINED AS" was deprecated in 11.1
docs.oracle.com/cd/E11882_01...
Time to let it go!
ADD DATABASE ... MAINTAINED AS {PHYSICAL|LOGICAL}
"MAINTAINED AS" was deprecated in 11.1
docs.oracle.com/cd/E11882_01...
Time to let it go!
New blog post: Reinstate an Oracle Database after failover without Flashback logging enabled
www.ludovicocaldara.net/dba/reinstat...
Sometimes I just blog because there's no comprehensive step-by-step to achieve something. Especially when it's a non-standard configuration 😬
www.ludovicocaldara.net/dba/reinstat...
Sometimes I just blog because there's no comprehensive step-by-step to achieve something. Especially when it's a non-standard configuration 😬
December 16, 2025 at 11:32 AM
New blog post: Reinstate an Oracle Database after failover without Flashback logging enabled
www.ludovicocaldara.net/dba/reinstat...
Sometimes I just blog because there's no comprehensive step-by-step to achieve something. Especially when it's a non-standard configuration 😬
www.ludovicocaldara.net/dba/reinstat...
Sometimes I just blog because there's no comprehensive step-by-step to achieve something. Especially when it's a non-standard configuration 😬
👇 😏
You can run in-database AI inference on Oracle Active Data Guard
@ludovico.bsky.social shows you how to do this to find images with semantic search
Loading an ONNX model & pictures
Creating PL/SQL to generate embeddings
Running this proc and searches on the standby
@ludovico.bsky.social shows you how to do this to find images with semantic search
Loading an ONNX model & pictures
Creating PL/SQL to generate embeddings
Running this proc and searches on the standby
buff.ly
November 27, 2025 at 3:47 PM
👇 😏
Reposted by Ludovico Caldara
New Blog Post: Exadata AI Smart Scan Deep Dive
Deep dive into my latest post and video on the #Exadata PM blog and discover how #AI #Smart #Scan accelerates #Oracle #Database #23ai AI #Vector Search workloads!
blogs.oracle.com/exadata/post...
Deep dive into my latest post and video on the #Exadata PM blog and discover how #AI #Smart #Scan accelerates #Oracle #Database #23ai AI #Vector Search workloads!
blogs.oracle.com/exadata/post...
blogs.oracle.com
September 10, 2025 at 6:54 AM
Claude, using the SQLcl MCP server, tried vector search with the search embedding generated on-the-fly by the ONNX runtime inside my Oracle 23ai Active Data Guard standby.
Claude is impressed.
Claude is impressed.
August 22, 2025 at 12:16 PM
Claude, using the SQLcl MCP server, tried vector search with the search embedding generated on-the-fly by the ONNX runtime inside my Oracle 23ai Active Data Guard standby.
Claude is impressed.
Claude is impressed.
💬 My latest post on the Maximum Availability Architecture Blog explains how Oracle Active Data Guard is an extraordinary and flexible solution for scalability 📈, allowing both conventional and AI workloads to scale and perform at their best.
🔍 Read more: blogs.oracle.com/maa/post/app...
🔍 Read more: blogs.oracle.com/maa/post/app...
blogs.oracle.com
August 18, 2025 at 2:17 PM
💬 My latest post on the Maximum Availability Architecture Blog explains how Oracle Active Data Guard is an extraordinary and flexible solution for scalability 📈, allowing both conventional and AI workloads to scale and perform at their best.
🔍 Read more: blogs.oracle.com/maa/post/app...
🔍 Read more: blogs.oracle.com/maa/post/app...
The DGMGRL command SHOW CONFIGURATION VERBOSE won't trigger a health check anymore starting with 23.9. More details here:
www.ludovicocaldara.net/dba/show-con...
www.ludovicocaldara.net/dba/show-con...
SHOW CONFIGURATION VERBOSE changes in 23.9 - DBA survival BLOG
Traditionally, the DGMGRL command SHOW CONFIGURATION VERBOSE not only retrieved detailed configuration information but also triggered a health check. The health check operation can be resource-intensi...
www.ludovicocaldara.net
August 14, 2025 at 4:59 PM
The DGMGRL command SHOW CONFIGURATION VERBOSE won't trigger a health check anymore starting with 23.9. More details here:
www.ludovicocaldara.net/dba/show-con...
www.ludovicocaldara.net/dba/show-con...
Reposted by Ludovico Caldara
The latest #Oracle #Exadata System Software maintenance updates for 25.1 and 24ai (24.1) have just been released! For full details, visit the @exadatapm.bsky.social PM Blog.
blogs.oracle.com/exadata/post...
blogs.oracle.com/exadata/post...
blogs.oracle.com
June 27, 2025 at 5:17 PM
The latest #Oracle #Exadata System Software maintenance updates for 25.1 and 24ai (24.1) have just been released! For full details, visit the @exadatapm.bsky.social PM Blog.
blogs.oracle.com/exadata/post...
blogs.oracle.com/exadata/post...
Reposted by Ludovico Caldara
🚨 Hot off the Press! 🚨
Excited about the powerful new #Oracle Database Snapshot and Cloning features now available with #Exadata #Exascale? Don’t miss out—get the latest #MAA Best Practices Guide and start cloning with confidence!
A huge thank you to the incredible MAA and Engineering teams!
Excited about the powerful new #Oracle Database Snapshot and Cloning features now available with #Exadata #Exascale? Don’t miss out—get the latest #MAA Best Practices Guide and start cloning with confidence!
A huge thank you to the incredible MAA and Engineering teams!
www.oracle.com
June 6, 2025 at 4:06 PM
It’s heartbreaking that fantastic bands like The Bobby Lees can’t survive in a streaming economy that rewards algorithms over artistry. I’d rather pay more if it meant my money actually went to the artists I love, not industry execs and playlist puppeteers. 🎸💔
hudsonvalleyone.com/2023/11/08/t...
hudsonvalleyone.com/2023/11/08/t...
The Bobby Lees plays what might be their last Woodstock show - Hudson Valley One
What use is being a rising star in the music industry when major labels and tech companies are black holes sucking all the money out of the room?
hudsonvalleyone.com
May 19, 2025 at 12:05 PM
It’s heartbreaking that fantastic bands like The Bobby Lees can’t survive in a streaming economy that rewards algorithms over artistry. I’d rather pay more if it meant my money actually went to the artists I love, not industry execs and playlist puppeteers. 🎸💔
hudsonvalleyone.com/2023/11/08/t...
hudsonvalleyone.com/2023/11/08/t...
Use the Broker, Luke! 🪄
www.youtube.com/watch?v=oj6h...
www.youtube.com/watch?v=oj6h...
A Coffee with Ludo - Use the Data Guard Broker!
YouTube video by Ludovico Caldara
www.youtube.com
May 12, 2025 at 8:05 PM
Use the Broker, Luke! 🪄
www.youtube.com/watch?v=oj6h...
www.youtube.com/watch?v=oj6h...
Oracle Data Guard switchover and failover have changed from 19c to 23ai.
🎥 This short video lists the main steps of a Database switchover in Oracle Data Guard 19c and compares them to a 23ai switchover.
Spoil alert: in 23ai, we make it significantly faster. 🏎️
www.youtube.com/watch?v=zOEd...
🎥 This short video lists the main steps of a Database switchover in Oracle Data Guard 19c and compares them to a 23ai switchover.
Spoil alert: in 23ai, we make it significantly faster. 🏎️
www.youtube.com/watch?v=zOEd...
Oracle Data Guard Switchover Changes in 23ai
YouTube video by Oracle Database Product Management
www.youtube.com
April 7, 2025 at 12:26 PM
Oracle Data Guard switchover and failover have changed from 19c to 23ai.
🎥 This short video lists the main steps of a Database switchover in Oracle Data Guard 19c and compares them to a 23ai switchover.
Spoil alert: in 23ai, we make it significantly faster. 🏎️
www.youtube.com/watch?v=zOEd...
🎥 This short video lists the main steps of a Database switchover in Oracle Data Guard 19c and compares them to a 23ai switchover.
Spoil alert: in 23ai, we make it significantly faster. 🏎️
www.youtube.com/watch?v=zOEd...
Reposted by Ludovico Caldara
ONLY TODAY! To celebrate Luiza's birthday, we're sharing a 25% discount code for the #POUG2025 tickets.
Why 25%? Because 34 doesn't sound so good. 🙁
It's the cheapest you can get our tickets. Code is valid until midnight. Go get them!
poug2025.konfeo.com/en/groups
Why 25%? Because 34 doesn't sound so good. 🙁
It's the cheapest you can get our tickets. Code is valid until midnight. Go get them!
poug2025.konfeo.com/en/groups
March 26, 2025 at 2:40 PM
ONLY TODAY! To celebrate Luiza's birthday, we're sharing a 25% discount code for the #POUG2025 tickets.
Why 25%? Because 34 doesn't sound so good. 🙁
It's the cheapest you can get our tickets. Code is valid until midnight. Go get them!
poug2025.konfeo.com/en/groups
Why 25%? Because 34 doesn't sound so good. 🙁
It's the cheapest you can get our tickets. Code is valid until midnight. Go get them!
poug2025.konfeo.com/en/groups
Oracle 23ai JDBC driver supports transparent redirection to the True Cache service, which can be served by either a True Cache instance or an Active Data Guard standby Database 🤓
Read more here 👇
blogs.oracle.com/maa/post/tru...
Read more here 👇
blogs.oracle.com/maa/post/tru...
blogs.oracle.com
March 17, 2025 at 4:15 PM
Oracle 23ai JDBC driver supports transparent redirection to the True Cache service, which can be served by either a True Cache instance or an Active Data Guard standby Database 🤓
Read more here 👇
blogs.oracle.com/maa/post/tru...
Read more here 👇
blogs.oracle.com/maa/post/tru...
Oracle CloudWorld Tour is a big success in Paris!
March 13, 2025 at 3:52 PM
Oracle CloudWorld Tour is a big success in Paris!
Reposted by Ludovico Caldara
Discover how #Oracle #Exadata #X11M delivers extreme performance and cost-effective storage on-premises and in the cloud. Learn how intelligent, database-aware software and features like #XRMEM and Exadata Smart Flash Cache optimize performance and scalability for modern workloads.
blogs.oracle.com
March 13, 2025 at 5:09 AM
Imagination is the limit! 🤯
Oracle Database 23.6 added sessionless transactions
These enable you to:
Start a transaction in session 1
Suspend it
Resume the transaction in session 2
Complete it in session 2
This allows the app to release DB connections while doing other work mid-transaction
These enable you to:
Start a transaction in session 1
Suspend it
Resume the transaction in session 2
Complete it in session 2
This allows the app to release DB connections while doing other work mid-transaction
February 7, 2025 at 3:13 PM
Imagination is the limit! 🤯
Reposted by Ludovico Caldara
The latest #Oracle #Exadata System Software Updates for 25.1, 24ai (24.1), 23.1, and 22.1 are now available. Details on the @OracleExadata PM Blog site - blogs.oracle.com/exadata/post...
January 24, 2025 at 9:17 PM
The latest #Oracle #Exadata System Software Updates for 25.1, 24ai (24.1), 23.1, and 22.1 are now available. Details on the @OracleExadata PM Blog site - blogs.oracle.com/exadata/post...
This winter break I'm finally doing... winter activities! Time to recharge the batteries and get ready for 2025 ☺️
December 27, 2024 at 10:47 AM
This winter break I'm finally doing... winter activities! Time to recharge the batteries and get ready for 2025 ☺️
Reposted by Ludovico Caldara
I think this is the Oracle database weekend ;-)
Now playing with ORDS and JSON-Relational Duality views. Awesome stuff!
Now playing with ORDS and JSON-Relational Duality views. Awesome stuff!
December 22, 2024 at 5:07 PM
I think this is the Oracle database weekend ;-)
Now playing with ORDS and JSON-Relational Duality views. Awesome stuff!
Now playing with ORDS and JSON-Relational Duality views. Awesome stuff!
Happy birthday to me 🥳
December 18, 2024 at 7:15 AM
Happy birthday to me 🥳
Reposted by Ludovico Caldara
New - or updated - event
ITOUG Tech Day 2025
on www.clocwise.org.
CfP ends on 02-FEB-2025, but dont wait and head over to https://sessionize.com/itoug-tech-day-2025/ now and submit!
#ITOUG25
ITOUG Tech Day 2025
on www.clocwise.org.
CfP ends on 02-FEB-2025, but dont wait and head over to https://sessionize.com/itoug-tech-day-2025/ now and submit!
#ITOUG25
December 9, 2024 at 1:00 PM
New - or updated - event
ITOUG Tech Day 2025
on www.clocwise.org.
CfP ends on 02-FEB-2025, but dont wait and head over to https://sessionize.com/itoug-tech-day-2025/ now and submit!
#ITOUG25
ITOUG Tech Day 2025
on www.clocwise.org.
CfP ends on 02-FEB-2025, but dont wait and head over to https://sessionize.com/itoug-tech-day-2025/ now and submit!
#ITOUG25
🎶 My 2024 in music:
I've listened to 788 hours of music (>2h per day).
1171 different artists (109 discovered this year).
Top 5:
Godspeed You! Black Emperor
Oranssi Pazuzu
Colour Haze
IDLES
PJ Harvey
Deezer ranks my tastes "Super Niche" (less than 1% mainstream). That's a good stat 🤘
I've listened to 788 hours of music (>2h per day).
1171 different artists (109 discovered this year).
Top 5:
Godspeed You! Black Emperor
Oranssi Pazuzu
Colour Haze
IDLES
PJ Harvey
Deezer ranks my tastes "Super Niche" (less than 1% mainstream). That's a good stat 🤘
December 5, 2024 at 3:37 PM
🎶 My 2024 in music:
I've listened to 788 hours of music (>2h per day).
1171 different artists (109 discovered this year).
Top 5:
Godspeed You! Black Emperor
Oranssi Pazuzu
Colour Haze
IDLES
PJ Harvey
Deezer ranks my tastes "Super Niche" (less than 1% mainstream). That's a good stat 🤘
I've listened to 788 hours of music (>2h per day).
1171 different artists (109 discovered this year).
Top 5:
Godspeed You! Black Emperor
Oranssi Pazuzu
Colour Haze
IDLES
PJ Harvey
Deezer ranks my tastes "Super Niche" (less than 1% mainstream). That's a good stat 🤘
Reposted by Ludovico Caldara
I really enjoy presentations by @ludovico.bsky.social . He has references to all data sources/research the information is from. This kind on presentation requires a huge knowledge and a lot of work. Fantastic! #kudos
November 20, 2024 at 3:17 PM
I really enjoy presentations by @ludovico.bsky.social . He has references to all data sources/research the information is from. This kind on presentation requires a huge knowledge and a lot of work. Fantastic! #kudos