If encountering an issue where after entering comments, and appearing to save correctly on the presentation layer but the comments do not display, please read on for the possible solution particularly if the comments are visibly stored in the BITeamwork relational database.
Ultimately your DBA needs to run the following command using SYSDBA privileges to set the permissions for your BITEAMWORK schema:
grant execute on sys.DBMS_LOB to <your_schema_name>
grant execute on sys.DBMS_LOB to BITEAMWORK_OBI;
Please read the full documented solution in the attached file below.