Hi Suhanats,You can find the max OBJECTID by appending the OIDs to a list and then retrieving the max value from the list. Ex:fc = "Airports"
OID_list = []
rows = arcpy.SearchCursor(fc, "", "", "OBJECTID")
for row in rows:
OID_list.append(row.OBJECTID)
del row, rows
maxOID = max(OID_list)
Next you can use maxOID variable to select only the new records within the SQL table.