Whatt does !@! will do in this line of the shell script. Thanks in advance.
If it's in a shell script then it is a so-called 'here document' (and you should find '!@!' some lines below).
Its used to indicate the end of that bteq inside a shell script.
bteq << !@! > $LOGFILE 2> $LOGFILE
sel * from ***
u can use any character instead of !@!.