Track stored procedural call from Middleware to DB

Hi Team, We have a requirement where Middleware need to execute stored procedural call(read only) against DB and that need to be tracked in Splunk. The client doesn't want to log the invocation call data in any log file. How can we achieve this? I was reading about DB connect app which can trigger stored procedural call but that may not be applicable here as that will be a different trigger from Splunk itself but we need to track the data b/w Middleware <-> DB. Please advise. Thanks Hemendra