Infrastructure at your Service

All posts by Franck Pachot

Franck Pachot
Technology Leader
Principal Consultant

OCM 12cFranck Pachot has 20 years of experience in Oracle databases. Through his expertise as a DBA, Oracle expert, data architect, and performance specialist, he is able to cover all database areas: architecture, data modeling, database design, tuning, operation, and training. Franck knows how to enable an efficient collaboration between the developers and the operational team when it comes to troubleshooting issues or performance tuning.

RSSOracle ACEOracle ACE Franck is Oracle Certified Master (OCM 12c), Oracle ACE Director and proud member of Oraworld-team and Oak Table.

Next public appearance:
C15LV
Las Vegas (US), Apr 25th

From Transportable Tablespaces to Pluggable Databases
12.2 Multitenant New Security Features to Clarify DevOps and DBA role separation
DOAGDB18
Düsseldorf (DE) , May 14th


12cR2/18c security features to clarify DBA role in DevOps
POUG
Sopot (PL), Sept. 7th

Join Methods: Nested Loop, Hash, Sort, Merge, Adaptive


Franck Pachot

SQLcl connect target depends on previous connection

By | Oracle | No Comments

I thought it was a bug for two reasons: first, because I don’t like that my connect destination depends on the context, and then because it is a different behavior than in SQL*Plus. But finally, it is the correct behavior, and the 100% compatibility with SQL*Plus is expected only when SET CLASSIC=ON. And as I was surprised, and I think it can be dangerous, here is a blog post about it. Basically, be very careful…

 
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Franck Pachot

OpenShift on my Windows 10 laptop with MiniShift

By | Oracle | No Comments

If you want to play with OpenShift on your laptop, you can, in a Virtual Machine. I have VirtualBox installed on my laptop. I’ll install Minishift here, which will create the VM to run OpenShift with few simple commands only. On Linux you can refer to Daniel’s post. Here is the Windows version. Oh, and Daniel did that to run Postgres but my goal is to run an Oracle container of course. Or MySQL maybe….

 
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Franck Pachot

Which Bitnami service to choose in the Oracle Cloud Infrastructure?

By | Oracle, Postgres | No Comments

In the Oracle Cloud PaaS you have a marketplace where you can choose your service. Some are packaged from Bitnami and available on multiple OS. My first idea is that in PaaS you do not care about the OS. But Oracle Cloud has this very nice feature where you still have full access to the OS, as root, even in PaaS. Then, you choose the Linux distribution of your preference. Except if performance is different….

 
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Franck Pachot

Postgres, the fsync() issue, and ‘pgio’ (the SLOB method for PostgreSQL)

By | Postgres | 2 Comments

That’s a long blog post title, which is actually just a good pretext to play with Kevin Closson SLOB method for PostgreSQL: pgio I use the beta version of pgio here. If you want to read more about it, you can start on https://kevinclosson.net/2018/05/22/sneak-preview-of-pgio-the-slob-method-for-postgressql-part-i-the-beta-pgio-readme-file/. If you are used to the SLOB for Oracle (https://kevinclosson.net/slob/) you will quickly understand the ‘why’ and ‘how’ of pgio.  

 
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Franck Pachot

ADWC – System and session settings (DWCS lockdown profile)

By | Oracle | No Comments

The Autonomous Data Warehouse Cloud service is a PaaS managed service where we have a PDB and an ADMIN user which has most of the system privileges. For example, we have the privilege to change initialization parameters: SQL> select * from dba_sys_privs where grantee=user and privilege like ‘ALTER S%';   GRANTEE PRIVILEGE ADMIN_OPTION COMMON INHERITED ——- ——— ———— —— ——— ADMIN ALTER SESSION YES NO NO ADMIN ALTER SYSTEM YES NO NO Still, not everything…

 
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Franck Pachot

12c upuserxt.lst, upobjxt.lst & Oracle Maintained objects/users

By | Oracle | No Comments

Mike Dietrich has blogged recently about upuserxt.lst and upobjxt.lst and how to query them with external table. The first time I’ve seen those ‘.lst’ files, the default extension for sqlplus spool files, I wondered whether they were provided in ?/rdbms/admin on purpose, or if they were just some leftovers from some tests Oracle did before packaging the Oracle Home. Finally, I realized that they were there on purpose and that those ‘.lst’ are important files…

 
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Franck Pachot

SQL Developer Web on the Oracle Cloud

By | Oracle | 3 Comments

You like SQL Developer because it is easy to install (just unzip a jar) and has a lot of features? Me too. It can be even easier if it is provided as a web application: no installation, and no java to take all my laptop RAM… When I say no installation, you will see that you have some little things to setup here in DBaaS. That will probably be done for you in the managed…

 
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Franck Pachot

Some ideas about Oracle Database on Docker

By | Oracle | No Comments

This is not a ‘best practice’ but just some ideas about building Docker images to provide an Oracle Database. I started with the images provided by Oracle: https://github.com/oracle/docker-images/tree/master/OracleDatabase/SingleInstance and this is great to validate the docker environment. Then I customized for my needs and here are the different points about this customization.  

 
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Franck Pachot

ADWC – the hidden gem: Zepplin Notebook

By | Oracle | 3 Comments

In the previous blog posts I explained how to create, and stop/start the Autonomous Data Warehouse Cloud service. And I didn’t show yet how to connect to it. It is easy, from sqlplus or SQL Developer, or SQLcl. But there’s something more exciting to run some SQL queries: the Oracle Machine Learning Notebooks based on Apache Zepplin. At first, I didn’t realize why the administration menu entry to create users in the ADWC service was…

 
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