Hi Debra,
Thank you for your post.
1. As for the Authentication error, I advise that you check that the pre-emptive authentication option is enabled in Preferences > HTTP > Adds authentication information to outgoing request. Since you use tokens, make sure that a token isn't expired.
2. Yes, basically this error means that some part of an SQL clause or expression has been omitted. You can log the SQL statement when you run tests via TestRunner (via Jenkins) and check whether it works fine. The following article can be helpful for you: http://www.developerfeed.com/javasqlsqlexception-ora-00936-missing-expression/.
