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The Oaktable

Announcement: Both Of My Oracle Webinars Scheduled For February 2021 !!

I’m please to announce that both of my highly acclaimed webinars scheduled for February are now confirmed. These webinars are a must for any Oracle DBA or Developer interested in designing, developing or maintaining high performance, highly scalable Oracle-based applications or databases. Howe

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18 Jan 2021, 6:22 pm

Here’s an anomaly that appeared in a question on the ODC recently about tweaking the output of dbms_metadata.get_ddl(), As the title suggests, though, this posting isn’t about the dbms_metadata package it’s about supplemental logging and something that should not to be possible and Lees meer
In today’s video we demonstrate the JSON data type, introduced in Oracle database 21c. The video is based on this article. JSON Data Type in Oracle Database 21c It assumes knowledge of existing JSON support in the Oracle database. If you are not familiar with the functionality Oracle have bee Lees meer
https://oracle-base.com/blog/wp-content/uploads/2021/01/21c-218x300.png 218w" sizes="(max-width: 187px) 85vw, 187px" /> A few days ago Oracle made the official announcement about the release of Oracle database 21c (here). This was a rather late announcement, as the product has been available on O Lees meer
Difficult to play table tennis in real life (IRL) these days. I found this simulation: read more Lees meer


Oracle Cloud : APEX Application Development Service (APX) - Create Service

This article provides a run through of creating a new APEX Application Development (APX) service on the Oracle Cloud.

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A blockchain table is a tamper-proof, insert-only table with an associated table-level and row-level retention period. Lees meer
Oracle database 21c introduced the ability to use expressions to set initialization parameters. These expressions can reference other parameters and environment variables. Lees meer
The FOR LOOP iteration control has been enhanced in Oracle database 21c. Lees meer
Oracle database 21c makes it even easier to populate collections using qualified expressions. Lees meer

Blogs Oracle.com

RAC SIG Webcast: Oracle Database 12c Release 2 Rapid Home Provisioning and Maintenance

Please join me and the RAC SIG on Wednesday May 17th at 9:00 am PT for a discussion of Rapid Home Provisioning and Maintenance with Oracle Database 12.2.  We'll cover the full feature set available with the 12.2 release and see how it can help you meet today's requirements for maintaining a lar

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Companies have been using workflow and content management for many, many years. In IT we got used to the term Business Process Management (BPM) whenever we spoke of automated process execution. Not so strange since the term BPM was adopted by all the major software vendors and has received a Lees meer
Companies have been using workflow and content management for many, many years. In IT we got used to the term Business Process Management (BPM) whenever we spoke of automated process execution. Not so strange since the term BPM was adopted by all the major software vendors and has received a Lees meer
This is the first of a two-part blog series. It leverages the Oracle Cloud platform (in concert with some widely used open source technologies) to demonstrate message based, loosely coupled and asynchronous interaction between microservices with the help of a sample application (scroll do Lees meer
Performance is a critical aspect of mobile app development and the embedded platform web view is a significant contributing factor to the performance of any hybrid mobile app. Since late 2015, hybrid app developers targeting iOS have been able to include the Apache Cor Lees meer

Amis technology blog

Create OCI Function running a Playwright scenario

TL;DR – How to create a Function on Oracle Cloud Infrastructure that uses the Playwright library for running headless browser scenarios, for example for Web UI Health Check and Performance Monitoring, for tactical integration and simple RPA and for web based reporting. The article shows a cust

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TL;DR – this article describes how Windows Sandbox can be used to prepare a well known environment for demonstrations, tutorials, tests etc. Scoop is a great package manager for quickly installing Windows packages (Node runtime, Git client, VS Code editor, …) into the Sandbox. I have ap Lees meer
TL;DR;  Run demonstrations or instructions of browser actions. Allow the user to pause and skip acts, and to reset and switch scenarios. Allow the user to interact with the browser before, after and during the scenarios. The open source Playwright library is used from a custom NodeJS applicatio Lees meer
The objective I am pursuing is the following: I want to be able to open a web site or web application and show a floating toolbar on top of the web site’s content. As I am making my way through the site or application, I can use functions from the […] The post Inject Generic Floating To Lees meer
Adding a short cut key combination to a web application or web site can be quite powerful. When the short cut key combination is activated – things can happen. Things that you have defined on top of everything the web application already offers. In this article I describe how I […] The Lees meer

Tanel Poder

Oracle Wait Event Name vs. Display Name

Here’s a little SQL query that lists all Oracle wait events where Oracle kernel developers have added additional “human readable” descriptions. Since the original wait event names shouldn’t be changed for compatibility with existing tools, then a new column DISPLAY_NAME was a

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9 Dec 2020, 4:28 am

(Version: 1) Based on the troubleshooting summary slide deck and some findings from my additional research, here are the proposed next steps. Since this problem seems to happen only on collision of multiple moving parts, the extra instrumentation will allow us to narrow down the issue further to avo Lees meer
There are plenty of JVM profilers out there, but before attaching with a profiler, you can get a high-level overview by just sampling the Linux /proc/PID/comm and /proc/PID/stat fields to see which JVMs threads are most active and whether they’re burning CPU or are blocked by some I/O. When cr Lees meer
Here’s a list of reasons why SELECT * is bad for SQL performance, assuming that your application doesn’t actually need all the columns. When I write production code, I explicitly specify the columns of interest in the select-list (projection), not only for performance reasons, but also f Lees meer
In this post I will show you how to break down Linux system load by the load contributor or reason. You can drill down into the “linux system load in thousands” and “high system load, but low CPU utilization” problem patterns too. The system load metric aims to represent the Lees meer

All things Oracle

Oracle archived redo size – the research

Oracle archived redo size may be smaller than that of online redo log files. In this article, Jonathan Lewis takes a deeper look.… The post Oracle archived redo size – the research appeared first on Simple Talk.

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Oracle sometimes generates smaller archived redo logs than you might expect based on the size of the online redo logs. In this article, Jonathan Lewis explains how Oracle uses online redo logs and why there might be a discrepancy in the archived log size.… The post Are your Oracle archived lo Lees meer
SQL Developer is a popular free tool for working with Oracle databases. In this article Srinivasan Suresh explains several features of SQL Developer that can make you more productive.… The post SQL Developer – A great tool and better ways to use it appeared first on Simple Talk. Lees meer

28 Sep 2020, 5:34 pm

Oracle has been established as one of the top database systems used in enterprises throughout the world. In this article, Cynthia Dzikiti describes her career as an Oracle application developer and covers some of the benefits of Oracle.… The post Why choose Oracle? appeared first on Simple Ta Lees meer
Kellyn Pot'Vin-Gorman explains Oracle Automatic Storage Management and why it’s impossible to do a comparison to Azure IaaS.… The post What is Oracle ASM to Azure IaaS? appeared first on Simple Talk. Lees meer