All this started with a tweet by Chris Gledhill: I agree 100% with the idea that the whole idea of banking and what it is to be a bank will change completely in the next years. I just looked around what “traditional banks” do at this point, in this era of post 2008 crisis of… Read More: #Banking is changing and we will have to change its… »
Dear Reader, As the year comes close to an end, I wish to point your attention to the power of being present, to acknowledge where you are emotionally, physically and spiritually. Next to these dimensions, you can assess your career and family situation as well. Whichever you feel is relevant, important and necessary for you.… Read More: End-of-Year Review and New-Year Intentions and Motivations »
I recently started writing book reviews and I wish to add to the blog my first English review about a book I also read in English, from John Boyne, an Irish novelist. I do not remember how I came across this title and when I bought it as a kindle version, but this year, I… Read More: Book review: The heart’s invisible furies by John Boyne, 2017 »
This is a strange annoying warning that suddenly appeared after I upgraded to JBoss 7.4.2 and was completly flooding my output log. It looks like an warning due to a bad configuration that until version 7.4.2 was ignored. My log looked something like this: Of course the fact that somehow the warning message seems to… Read More: #Jboss #Artemis AMQ153005: Unable to retrieve ${0} from JNDI. Creating… »
When trying to add a foreign key to a table sometimes the error ORA-02298 is thrown. Let’s have two tables a MyTable and a MyTableHistory connected by a historyid column from MyTable that points to the id column from MyTableHistory Try then to add add foreign key like: If we are in the case of… Read More: #Oracle: ORA-02298: cannot validate "key" – parent keys not found »
The ELK (ElasticSearch+LogStash +Kibana ) stack is maybe the best method to monitor your environment in a simple visually applying way. My task was to monitor the parameters of a Jboss/Wildfly application server where my enterprise application is hosted. There are several guides that describe how to deploy the basic stack, I am not going… Read More: Use #ELK stack to monitor #JBOSS application server »
There are instances when one needs to migrate data from a Postgres database to a different PostgreSQL database version or even worse to a restrictive PostgreSQL instance of cloud providers like #AWS-RDS. When migrating to a different version of Postgres after you used to run on a frozen production version for long time it may… Read More: Migrating a #PostgreSQL database to a diferent PostgreSQL version or… »
Sometimes you need to add by hand a primary key on a table that initially did not have any constraint. Most of the time you will run into the issue of having duplicate rows, so first we must make sure there are no duplicate rows. Duplicate rows are the rows that have duplicates in the… Read More: #SQL to remove duplicate rows from a table in #Oracle »
Starting from openssh 7.8 the default format for private keys has changed from PEM to OpenSSH: That means that private keys generated with the referenced command: (ssh-keygen -t rsa -b 4096) are no longer generated as PEM format. Lot’s of online services do not accept this format yet CircleCI, GitHub are some of the services… Read More: #OpenSSH private keys with old PEM format »
When you start reading lots of VC tweets and blog posts is easy to get confused by the deluge of acronyms they use. The following are the basic definitions for the most important acronyms. CAC = Customer acquisition cost TAC = Total acquisition cost LTV= Lifetime value TAM = Total available market YoY growth =… Read More: Acronyms of a #VC for #fintech people »