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