Not sure what you're up to after looking a bit. Bets bet is read perldoc DBI where you have the DBI module installed or see the book by the man who wrote the DBI itself: Programming the Perl DBI.

No idea how to help except to say the code is mighty strange, what does the <> do for you? but to get your code to print nicely in a node you should use CODE tags, see Writeup Formatting Tips.

$nx = 2; 
$ny = 4; 
$SqlStatement = "execute sp_test $nx, $ny"; 

if ( $dbLang->Sql($SqlStatement) ) { 
     print( "\n----\nSQL Error: " . $dbLang->Error()); 
     print( "SQL statement = \'$SqlStatement\'\n----");
     <>;
     exit; 
}
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"sometimes when you make a request for the head you don't
want the big, fat body...don't you go snickering."
                                         -- Nathan Torkington UoP2K a.k.a gnat