Python: A Google Translate service using Playwright
There are a lot of use-cases in which you might want to automate web-browser actions. For example to automate tedious repetitive tasks or to perform automated tests of front-end …
Category: Performance and tuning
Performance problems, the Whys.. and Hows.. around them
Introduction Over the last years, as part of my consultancy experience, I had the chance to work on several assignments tackling IT performance problems. In this post I will …
ADF Performance Monitor New Whitepaper Published
We are happy to announce that we have a new whitepaper on the ADF Performance Monitor. This blog publishes a new whitepaper that gives more information about the architecture, …
ADF Performance Monitor: New Introduction Video (3:40)
Are you unable to pinpoint frustrating blind spots and recurring problems in your ADF application? This video gives a quick introduction of the features of the ADF Performance Monitor, …
ADF Performance Monitor: Thread Wait and Blocked Time
Last week we had a new version of the ADF Performance Monitor available – version 9.5. In this blog I will write on one of the new features; thread …
ADF Performance Monitor New Version 9.5
We have again a major new version of the ADF Performance Monitor available – version 9.5 ! We have added many new valuable features and improvements. Many overview screens …
Spring: Blocking vs non-blocking: R2DBC vs JDBC and WebFlux vs Web MVC
Spring Framework version 5, released in Sept 2017, introduced Spring WebFlux. A fully reactive stack. In Dec 2019 Spring Data R2DBC was released, an incubator to integrate relational databases …
The size of Docker images containing OpenJDK 11.0.6
When running Java applications in containers, you need to be careful with your resources. If you’re not careful with layering your images (for example using Google’s Jib), you can quickly …
Performance of relational database drivers. R2DBC vs JDBC
R2DBC provides non-blocking reactive APIs to relational database programmers in Java. It is an open specification, similar to JDBC. JDBC however uses a thread per connection while R2DBC can handle …
HTTP benchmarking using wrk. Parsing output to CSV or JSON using Python
wrk is a modern HTTP benchmarking tool. Using a simple CLI interface you can put simple load on HTTP services and determine latency, response times and the number of successfully …
ADF Performance Monitor – Major New Version 9.0 (Part 1)
December 18, 2019
Frontend technology, Oracle Application Development Framework, Performance and tuning
No Comments
I’m very excited to announce that we have a major new version of the ADF Performance Monitor – version 9.0 ! We have added many valuable new features; new …
Java Microservices: What do you need to tweak to optimize throughput and response times?
Performance tuning usually goes something like followed: a performance problem occurs an experienced person knows what is probably the cause and suggests a specific change baseline performance is determined, …
Performance! 3 reasons to stick to Java 8 for the moment
It is a smart thing to move to newer versions of Java! Support such as security updates and new features are just two of them but there are many …
ADF Performance Monitor: Error Diagnostics
Application errors are often hard to retrieve, or take a lot of time to resolve. When you are suffering from errors, and have a lack of clarity when errors …
Customer Case: New Server Infrastructure Halves Server Process Time
Recently I was analyzing and troubleshooting the performance of an ADF application. Much was already improved before I came. Due to a very recent new hardware/infrastructure environment, the server …
ADF Performance Monitor brings performance improvements and Insight at Intris
January 9, 2019
Oracle Application Development Framework, Performance and tuning, Technology, Tools
No Comments
Intris is the leading Belgian provider of freight forwarding, customs and warehousing management solutions. Headquartered in Antwerp, Intris provides its integrated software and cloud-based solutions to logistics services providers …
JVM performance: OpenJ9 uses least memory. GraalVM most. OpenJDK distributions differ
In a previous blog post I created a setup to compare JVM performance of several JVMs. I received some valuable feedback on the measures I conducted and requests to …
Comparing JVM performance; Zulu OpenJDK, OpenJDK, Oracle JDK, GraalVM CE
There are many different choices for a JVM for your Java application. Which would be the best to use? This depends on various factors. Performance being an important one. …
Monitoring Spring Boot applications with Prometheus and Grafana
In order to compare the performance of different JDKs for reactive Spring Boot services, I made a setup in which a Spring Boot application is wrapped in a Docker …
Oracle ADF Performance: Top 10 Typical Bottlenecks
In this blog I will discuss the top 10 typical performance problems I see in general in Oracle ADF projects – and will discuss solutions. Top 10 Typical Bottlenecks …
ADF Performance Tuning: A Field Report
Last week I was doing an extensive performance analysis / health check on a large ADF project, with the newest version of our ADF Performance Monitor product. In this performance assessment/analysis …
ADF Performance Monitor: Monitoring with Percentiles
What is best metric in performance monitoring – averages or percentiles? Statistically speaking there are many methods to determine just how good of an overall experience your application is providing. …
ADF Performance Tuning: Manage Your Fetched Data
In this blog I want to stress how important it is to manage the data that you fetch and load into your ADF application. I blogged on this subject …
ADF Performance Monitor – Major New Version 7.0
We are very happy to announce that a major new version 7.0 of the ADF Performance Monitor will be available from May 2018. There are many improvements and major …
ADF Performance Tuning: Avoid a Long Browser Load Time
It is not always easy to troubleshoot ADF performance problems – it is often complicated. Many parts needs to be measured, analyzed and considered. While looking for performance problems …
ETL using Oracle DBMS_HS_PASSTHROUGH and SQL Server
June 12, 2017
Oracle, Databases, DBA Oracle, ODA, Oracle 12, Performance and tuning, PL/SQL
No Comments
While I prefer a “loosely coupled architecture” for replication between Oracle and SQL Server, sometimes a direct (database) link cannot be avoided. By using DBMS_HS_PASSTHROUGH for data extraction the …
WebLogic Server: Automate obtaining performance metrics from the DMS
Oracle provides the Dynamic Monitoring Service (DMS) as part of WebLogic Server which is extremely useful if you want to obtain aggregated data of an environment in case of …
Doing performance measurements of an OSB Proxy Service by programmatically extracting performance metrics via the ServiceDomainMBean and presenting them as an image via a PowerPoint VBA module
This article explains how the process of doing performance measurements of an OSB Proxy Service and presenting them in a “performance analysis document” was partly automated. After running a …
ADF Performance Monitor: Support for EJB/JPA (EclipseLink)
Not all Oracle ADF projects are built with ADF Business Components (ADF BC). Some organizations prefer to use EJB/JPA (EclipseLink) instead of ADF BC. The EclipseLink JPA provides developers with …
My first experiences with ThreadLogic
A while ago I came into touch with ThreadLogic. Most of the people whom I was talking about it, did not know the tool. This unfamiliarity with ThreadLogic made me …
ADF Performance Monitor: Measuring Network Time to Browser and Browser Load Time
Recently we added a great new feature to the ADF Performance Monitor: network and browser load time information. Now you know exactly every end-user experience of your ADF application, …
Oracle SOA Suite 12c: The Coherence Adapter
Oracle SOA Suite 12c ships with a new technology adapter, the Oracle CoherenceAdapter. This adapter allows easy integration with a Coherence Data Grid (a distributed cache). The excellent post …
Instrumenting, Analysing, & Tuning the Performance of Oracle ADF Applications
December 12, 2014
Enterprise Manager, Oracle Application Development Framework, Performance and tuning
No Comments
Last week I presented at the UKOUG’14 conference on instrumenting, analyzing, & tuning the performance of Oracle ADF applications. Instrumentation refers to an ability to monitor or measure the level of a …
ADF Performance Monitor: Measuring Slow Network Time
Recently I was implementing the ADF Performance Monitor at a customer site and doing a detailed performance analysis. This customer had severe (and less severe) performance problems but was …
10 tips for ADF Application (Module Pool) tuning
Performance tuning is one of the things that is often left behind during development. Project leaders and business owners seem to think it happens on its own or just …