Code:
nawk 'NR == FNR{rec[$1] = $2" " $3; next}
{ print $0 " " rec[$3]}
' 64491_merge1.d 64491_merge.d
output
Code:
0507 1202 JOBA abcdefg server4
0507 1302 JOBB defghij server22
0507 1452 JOBC vwxyz12 server55
0507 1552 JOBA abcdefg server4
0507 1553 JOBA abcdefg server4