If you enable the Archive IO setting for one or more business service and business operations, InterSystems IRIS™ archives the input and output data in addition to the production messages. The input and output data is shown in the Visual Trace window; see Tracing the Path of Related Messages, earlier in this book.
You can also display the I/O archive by executing an SQL query as follows:
Click Execute Query. The results display in the bottom half of the page.
If there are no results, or if the results do not match your expectations, check to see that you have enabled the Archive IO setting for the business service or business operation that you want to investigate. See Configuring Productions.