All articles

A migration pitfall with ALL COLUMN SIZE AUTO

By Franck Pachot . When you migrate, you should be prepared to face some execution plan changing. That’s not new. But here I’ll show you a case where you have several bad execution plans because lot of histograms are(…)

List listeners and services from the instance

By Franck Pachot . Want to know all your listeners – including scan listeners, and the services it listens for? It is possible from the instance, with the – undocumented – view V$LISTENER_NETWORK which is there since 11.2 Let’s(…)

ALTER TABLE INMEMORY

By Franck Pachot . In-Memory Column Store is amazing. It brings very good performance to full table scans. I’t easy: just ‘flip a switch’ and you accelerate all reporting queries on your table, without thinking about what to index(…)

C15LV: Nothing to BLOG About – Think Again

By Franck Pachot . Before going to the airport to come back in Europe, the las session I assisted at IOUG Collaborate is a panel: Nothing to BLOG About – Think Again Some famous bloggers were there to help,(…)

SQL Monitor report little improvement in 12c

By Franck Pachot . This is a very short post about something I though I had already blogged about. I like SQL Monitoring active reports. The are graphical, and still very light. There is only one thing I don’t(…)

Get the main information from Windows Server with PowerShell

This blog will present you a way to retrieve Windows Server main information via PowerShell. The goal is to be able to automate the extraction of information for different purposes: audit, report generation, dashboards…   Disclaimer: I am not a(…)

bulk loading semi structured data in postgresql

The last post took a look at how to efficiently load 1m rows into a table in PostgreSQL. In this post I’ll take a look on how to do the same with semi structured data.

Variations on 1M rows insert(2): commit write – PostgreSQL

Franck was quite fast with his second post Variations on 1M rows insert(2): commit write. Lets see what we can do on the PostgreSQL side. I’ll take the same test table as Franck again: create(…)

Variations on 1M rows insert (1): bulk insert – PostgreSQL

When I read Franck’s post about Variations on 1M rows insert (1): bulk insert I thought doing quite the same in PostgreSQL might be interesting. Lets start by using the same test tables, one using a primary(…)

QlikView – Load data in QlikView / QlikSence – Best practice and trick

In this blog, I will give you some best practices and tricks when you are loading table to generate your data. But before, I will review the different ways to load data in a QlikView or QlikSense report. 1.How to(…)