As far as I understand, Tools - Monitor Sessions is a mere report.
However, there is an option Trace Session in the context menu of the upper grid. I am missing the corresponding Stop Trace and I wanted to add it to the report by myself.
I copied the report under User Defined Reports, but I didn't find an appropriate option in the Edit Report dialogue.
Instead of doing Save Grid as Report from Tools -> Monitor Sessions into your User Defined Reports, instead copy the Sessions report from Data Dictionary Reports -> Database Administration -> Sessions -> Sessions
You will notice that UserReports.xml in C:\Users\<username>\AppData\Roaming\SQL Developer will have a line near the bottom containing the Action information for Trace Session and Kill Session. Just edit that section of UserReports.xml to include similar information for a Stop Trace action, specifically with this statement:
Thanks for your answer.
Just one remark: such a report with additional item s must not be edited with the reports editor from SQL Developer any more. Saving the report out of the editor would delete the items.
My version is Version 3.2.10.09