Splunk DB Connect and Oracle VPD (Virtual Private Databases): Is there a way to execute a stored proc to set a user context?

Hello, In my gathering of how Splunk DB Connect works, it appears it's not possible to execute a stored proc to set a user context. Is there a way to support this in DB Connect? I want to execute the following to set VPD context: DBMS_SESSION.SET_CONTEXT('CLIENT_CTX', 'CLIENT_ID', V_CLIENT_ID); Any ideas how to get that working? Thank you