Console: completed process instance log shows null values for Oracle databases

Description of problem:
Process Instances detail technical log shows null values

Version-Release number of selected component (if applicable):
BPMS 6.2.0.CR1 EAP/WLS/WAS with Oracle12c/11gR2/11gR2RAC

How reproducible:
Always

Steps to Reproduce:
1. Deploy BC to WAS/EAP/WLS and connect with Oracle* as datasource
2. Run BigApp suite
3. Check completed MortgageDemo process instance details Log

Actual results:
null values

Expected results:
no null values in the Log

Additional info: