BUG #15701: oracle fdw issue

The following bug has been logged on the website:

Bug reference:      15701
Logged by:          ramakrishnan r
Email address:      prakash.ramakrishnan.ap@nielsen.com
PostgreSQL version: 11.2
Operating system:   rhel 7.5
Description:

Hi Team,

We are not able to run the query can you please help this.

==> sqlplus -v

SQL*Plus: Release 12.1.0.2.0 Production

PROD=#  select * from UDO_CH_interndimension;
ERROR:  error connecting to Oracle: OCIEnvCreate failed to create
environment handle
DETAIL: