There used to be PDF details there. Here is a synopsis, there is probably more. EDB Postgres Advanced Server is an enhanced version of PostgreSQL that offers

There used to be PDF details there. Here is a synopsis, there is probably more. EDB Postgres Advanced Server is an enhanced version of PostgreSQL that offers compatibility with Oracle in the following areas: Oracle-specific and syntax-compatible database object types Oracle-specific data types Oracle-specific SQL extensions Oracle PL/SQL support as a built-in native procedural language Oracle data dictionary views (i.e., ALL_, DBA_, USER_ views) Oracle built in PL/SQL packages EDB Postgres Advanced Server doesn't fully implement all Oracle-specific features in these areas. Nevertheless, the compatibility is extensive and covers many of the most commonly used Oracle constructs. https://www.enterprisedb.com/docs/migrating/oracle/migration_techniques/ https://www.enterprisedb.com/docs/migrating/oracle/migration... (If you don't care for Oracle, don't use their database. However, SQL/PSM is the ISO PSM-96 standard; using this dialect will be maximally portable.)