Oracle XE は推奨されていない

Express　Edtion の 4G の制限はERPでは現実的ではないが、制限事項を解った上で動かすことは問題ない。

alter session set "_optimizer_filter_pred_pullup"=false;

Oracle 10g express edition in Openbravo 04/21/2009 12:55

Do not use Oracle XE 10g. It's 4GB storage limitation makes it useless for heavy development in a few days, and it has a bug that happens usually when using Openbravo ERP. Therefore, the recommended version is Standard Edition 11g (>=11.1.0.6.0).

Source:http://wiki.openbravo.com/wiki/Development_Stack_Setup

What details do you want to know? You can install Openbravo ERP in Oracle XE, but it is not recommended because of the reasons you've copy/pasted.

 

You can always install it, test it and see if you can live with those limitations.