digging into mrskew internals

I'm spending some time working with Method-Rs trace file analyzer mrskew.
As the requirements are beyond simple analyses (here an example about the uncommon things to do) I'm consulting the documentation and all available information in detail. After many readings I started to take this part of the documentation serious:

Wherever mrskew requires an expression (such as in --group and --where option arguments), you may use any valid Perl expression consisting of:

Updating Cloud Foundry CLI using Brew

Need to upgrade the CF CLI using brew it's as simple as below. Go to love brew

pasapicella@pas-macbook:~$ brew upgrade cf-cli
==> Upgrading 1 outdated package, with result:
cloudfoundry/tap/cf-cli 6.31.0
==> Upgrading cloudfoundry/tap/cf-cli
Warning: Use cloudfoundry/tap/cloudfoundry-cli instead of deprecated pivotal/tap/cloudfoundry-cli
==> Downloading https://cli.run.pivotal.io/stable?release=macosx64-binary&version=6.31.0&source=homebrew
==> Downloading from https://s3-us-west-1.amazonaws.com/cf-cli-releases/releases/v6.31.0/cf-cli_6.31.0_osx.tgz
######################################################################## 100.0%
==> Caveats
Bash completion has been installed to:
==> Summary
????  /usr/local/Cellar/cf-cli/6.31.0: 6 files, 17.6MB, built in 16 seconds

pasapicella@pas-macbook:~$ cf --version
cf version 6.31.0+b35df905d.2017-09-15

Sealing MongoDB documents on the blockchain

As human beings, we get used to the limitations of the technologies we use and over time forget how fundamental some of these limitations are.

As a database administrator in the early 1990s, I remember the shock I felt when I realized that the contents of the database files were plain text; I’d just assumed they were encrypted and could only be modified by the database engine acting on behalf of a validated user. But (more...)

My experiences from the CERN openlab Summer Student Programme 2017

Hello everyone,

Now I am back in Norway, and it is time for looking back and reminisce about my amazing
and memorable summer at CERN. So, today I will tell you about my experiences from my
Summer Internship.

Open Source? We have been here before… right!

Since over half a year I have made an adjustment in my course… nothing too dramatic, but still it has had some impact.

I have chosen the path of the more pure technique again. Not in a sense that I don’t manage anymore, though I don’t, but that’s more of a side effect
I have chosen the path of the more pure technique in a sense that the change from Closed Source software to Open (more...)

Multiple APEX Workspaces in one Oracle Exadata Express Cloud account now possible

Last night my Oracle Exadata Express Cloud account was updated to APEX 5.1.2, but there was more updated once I looked closer into the dashboard.

Before we could already create multiple Oracle schemas, but from now on within one Oracle Exadata Express account you can create multiple APEX Workspaces.

Go to Instance Administration under the Application Express setting in Manage:

Clicking on Manage Workspaces > Create Workspace

Just follow the wizard; you (more...)

Integrigy at Oracle Open World 2017

Integrigy will be presenting again this year on database security at Oracle Open World 2017 (San Francisco, October 1-5).  If you will be attending Open World, please join us for this informative session on database security.

The Thrifty DBA Does Database Security

Sunday, Oct 01, 10:45 a.m. - 11:30 a.m. | Moscone South - Room 159

Stephen Kost, Founder and CTO, Integrigy Corporation

Properly securing an Oracle Database requires significant effort and (more...)

Nextcloud configuration

Nextcloud configuration issues on Debian 9 Stretch In an attempt to get email and storage fixed, I am trying to get dovecot, postfix and nextcloud to integrate. With varying levels of success - what else is new? Anyway, nextcloud greets with the fact I do not have OPcache enabled, and I should add to php.ini. WRONG NOT php.ini So, I did... I added opcache.enable=1 opcache.enable_cli=1

Webinar: Version Control for the Oracle Database

Version control of tables and PL/SQL code in the Oracle Database has always been challenging. Database programmers lack the tools that make version control easy for developers who code with file based programming languages such as Java and JavaScript. In fact, this is one of the primary reasons why large software teams avoid schemas and writing code in the database.

In this presentation you will learn how Gitora 3 can help you use Git, the (more...)

Decrypt any encrypted password in your WebLogic Server Domain

It happens regularly, that you configure a WebLogic Domain and you forgot after some time the given password for the WebLogic Administration User or you have configured a JDBC Data Source and you forgot the password of the used Oracle Database User.

All you need is following small Python Script called decrypt.py:

# $Id: decrypt.py $
# PURPOSE: Script to decrypt any Password or Username
# within a WebLogic (more...)

EXADATA Essentials For Oracle DBAs: Hands-on 4-Week Saturday Workshop by Gavin Soorma (OCM)

My friend and fellow Oracle Certified Master Gavin Soorma, after his recent popular Oracle RAC workshop (over 100 registrants) is now offering a new hands-on 4-week Saturday workshop on "Exadata Essentials For Oracle DBA’s", so you can fast track your path towards becoming an Oracle Database Machine (DMA) administrator.

In this new workshop, instructions will be provided by Gavin on how to install and configure an Exadata Storage Server on your own individual VirtualBox platform.


Some Numbers on SaaS

It's money that matters
You know that it's true
It's money that matters
Whatever you do
               --From "It's Money That Matters" by Randy Newman

So we've just gotten through earnings announcements for several SaaS companies, including my own employer (Oracle).  And as the numbers come out, I see lots of different voices interpreting those numbers inaccurately.  Because SaaS has an entirely different business model from that of (more...)

My Oracle Open World 2017 Presentations

Oracle Open World 2017 will be happening very soon (1st-5th October). Still lots to do before I can get on that plane to San Francisco.

This year I'll be giving 2 presentations (see table below). One on the Sunday during the User Groups Sunday sessions. I've been accepted on the EMEA track. I then get a few days off to enjoy and experience OOW until Thursday when I have my second presentation that is part (more...)

Idempotent and Nullipotent in Cloud

I was going through the documentation of Oracle Cloud IaaS, when I came across the vaguely familiar term Idempotent.

One great thing which I have felt very strongly with all this Cloud-mania is the recall of various theoretical computing concepts which we learned/read in university courses way back. From networking through web concepts to operating system; there are plethora of concepts which are coming back to be in practice very actively in everyday life (more...)

Oracle Installer fails with [EXCEPTION]:java.lang.reflect.InvocationTargetException under RedHat 7.4

I recently had a customer with a fresh installed RedHat 7.4 system on which we wanted to install different Oracle Software in graphical mode, like Oracle Database, Oracle WebLogic Server and Oracle Data Integrator

Following error occured when we were starting the Oracle Installers, either runInstaller or java -jar fmw_12.

export JAVA_HOME=/u00/app/oracle/product/jdk1.8.0_131
export (more...)

SRVCTL Status Doesn’t Show RAC instances Running Unlike SQLPLUS

Yesterday, I converted a single instance physical standby database to a cluster database with 2 nodes.

After converting that to RAC database, I brought both instances up in mount state on both nodes and they came up fine and I started managed recovery on one node and it started working perfectly fine and got in sync with the primary.

Then I added them as a cluster resource by srvctl like (more...)

And the idiocy continues…

Been a while since my last post.  Then again, Oracle administration has become such a small part of my work that I hardly find the motivation... But the latest idiocy from the Larry Ellison camp is just too much! Yeah sure: another iteration of the "let's get rid of all those DBAs" nonsense that has essentially killed the company here in NSW Australia, since the days of release9! This one is

Super-Sizing PGA Workareas in Oracle 12c

After a customer asked me for possibilities of super-sizing PGA workareas in version 12c, I took the chance to revisit the topic and perform some tests. Great material has already been posted by Alex Fatkulin (Hotsos Symposium 2014) and Norbert Debes (Secrets of the Oracle Database, Apress), but I wanted to verify, how the current release is behaving and I found some interesting things.

Super-Sizing PGA Workareas in 12c

Oracle preps autonomous database at OpenWorld

Oracle preps autonomous database at OpenWorld 


IMHO The new database version will probably use the Oracle Management Cloud (OMC) to monitor and tune, the OMC has machine learning using big data analytics to aid performance tuning. Since version 10g, the Oracle DB has had self-tuning capabilities, i.e. auto application of SQL profiles using the Tuning pack license. Everything else was done by the DBA, perhaps with advice gained from the Tuning Advisor, but (more...)

Debian Stretch and opendkim: connection refused, no listener at port 8891

Debian stretch opendkim behaviour changed opendkim fails to sign! In a nutshell... if you face this: postfix/submission/smtpd[17385]: warning: connect to Milter service inet:localhost:8891: Connection refused and you cannot find a listener process at port 8891: netstat -nltp | grep 8891 returns nothing, and you find this in the /var/log/mail.log: opendkim[18055]: OpenDKIM Filter v2.11.0