If {HEAD ~ a statement entry} with {TAIL ~ identical text} is found in the cache, then the stored set of compilation environment data for the statement is searched for a match between the stored compilation data and the compilation environment for the statement entry of the new SQL request 
with
If { HEAD ~ a statement entry } with { TAIL ~ identical text } is found in the cache , then the stored set of compilation environment data for the statement is searched for a match between the stored compilation data and the compilation environment for the statement entry of the new SQL request
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH