BI Publisher processes failing with Error on fork() call – cannot allocate Memory

Hi All

We are on 8.57 tools with FSCM PUM33.

We have a couple of BI Publisher processes failing with

BI Publisher processes failing with Error on fork() call – cannot allocate Memory

The process goes to success in the process monitor. but the PDF is not generated. This error will be in TRC file. This is happening only in Prod. Not in Non Prod.

In Non Prod, when we try to create a report with Huge data, we get this below error

Exception:FO processing stopped at 128MB memory usage; Large table in page header/footer detected

The MOS SR says, we had to add these two property tags in your xdo.cfg file to improve performance: <property name="xslt-xpath-optimization">true</property>