The Motive of the testing/googling is to identify that Oracle Build-In function (apart from orafce) and operator which are using by Spacewalk are Present/Not Present in PG

The minimum supported version of Postgres is PG 8.1+.

Oracle built-function: Oracle functionshttp://ist.marshall.edu/ist466/functions.html

Oracle Build in Operator: Other sql/plsqlhttp://www.techonthenet.com/oracle/index.php

*Apart from all above theses,Didn't find any other Function Which are using/not using in Spacewalk.

*Oracle and Postgres Built-in function/operator which are using in Spacewalk are Compatible.

*Spacewalk is using these function's ButNOT in a great Extend.