Hi,
Usually SAP kernel corrections are made and parameters are created in order to active these corrections.
Every new kernel patch level is possible that a new parameter or too many new paramters are created.
As example, a fix is made in the code and this fix change the behavior to avoid the error. If you enable one specific paramter, the correction is enable. If you do not set this parameter, the kernel will use the old behavior (this is just an example).
alert/max_mtes_per_autoabap_run
created with the correction of note 1773008
auth/su53_buffer_entries
note 1671117
itsp/Security/ITSAppletPSE
note 1746172
rdisp/dp_sgc_redispatch
note 1777029
rdisp/thsend_order
note 1749919
rdisp/thwpsf_critical_path
note 1754001
These others should be new features or undocumented corrections.
rdisp/vb_hold_when_inactive
dbs/syb/odbc_trace
dbs/syb/tds_cap
Usually you shold be able to find the documentations about these paramters in teh RZ11, but not always these are documented.
Regards
Clebio
