If no matching compilation environment data is found then {TAIL ~ new compilation environment data} is added to the set for the statement in SQL cache 22 and the SQL compiler is called to generate {HEAD ~ the executable object} for use and storage in SQL cache 22 
If no matching compilation environment data is found then { TAIL ~ new compilation environment data } is added to the set for the statement in SQL cache 22 and the SQL compiler is called to generate { HEAD ~ the executable object } for use and storage in SQL cache 22
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH