Jean-Paul is CEO at Dalibo, a French PostgreSQL company. He promotes Free Software since 2000 and takes actively part in the PostgreSQL community. He created the french-speaking PostgreSQL website (www.postgresql.fr/). He was also treasurer and board member of PostgreSQL Europe between 2008 and 2013. He performed numerous migrations from proprietary databases to PostgreSQL.
How large companies and governmental organization in France did the move from Oracle to PostgreSQL. What were the pros and cons of such a move, and in which context it happened.
Such migrations is not only about money, even tough its part of the deal. Each of those entities had to conduct a change. There are technical issues, but those weren't the biggest ones. Knowledge, organization and other human aspects were much bigger issues... One has to be open-minded to succeed completely.