Migration and conception
Migration of databases : ETL , development or upgrade to an earlier version Conception of data model : ERD
Installation, backups but also more advanced setting like DataGuard, Oracle Stream and golden gate.
Installation RAC and troubleshooting . Tuning and development
Postgresql 8.x – 10.2
Postgresql is an OpenSource database licenced under BSD. Regarding the performances, they are as good as Oracle and has several advantages It can use embedded programming languages : python, perl, pl/pgsql,it is free and it exists a paid support