db_driverkey [ -handle_p handle_p ] dbn
Defined in packages/acs-tcl/tcl/01-database-procs.tcl
Normally, a dbn is passed to this proc. Unfortunately, there are one or two cases where a proc that needs to call this one has only a db handle, not the dbn that handle came from. Therefore, they instead use
-handle_p 1and pass the db handle. Hmm, as of 2018, it seems that in most cases, db_driverkey is called with a handle.