I'd suggest that instead of worrying about compressing the code, you focused on making it readable.
Good software is one that, besides running properly, is easily understandable.

update
This is not a challenge to compress the code.
The title should be 'Debug this for me'!
I rearranged the code and, instead of making it shorter, I made it longer. But still, I think it shows better what (I think) you are trying to do.

my $workDir = "/workdir";
my $oraLogin = "user/password@database";
my @filesToLoad = ( { "FileName" => 'file1.dat', "FileLoc" => 'dir1'})
+;

foreach my $fileToLoad (@filesToLoad) {
    my $fileToLoadPath = "$workDir/$fileToLoad{'FileLoc'}";
    opendir CTLDIR, $dileToLoadPath;
    my @allFiles = readdir(CTLDIR);
    closedir CTLDIR;
    
    #my @ctlFiles = grep { /\.run_ctl/i && -f $workingDir/$_} readdir(
+CTLDIR); 
    #what is workingDir? aren't all .run_ctl files?
    my @ctlFiles = grep { /\.run_ctl/i} @allFiles;                    
+       
    my @sqlFiles = grep { /\.run_sql/i} @allFiles;
    loader($fileToLoadPath, \@ctlFiles);
    loader($fileToLoadPath, \@sqlFiles);
}

sub loader {
    my $path     = shift;
    my $fileList = shift;

    foreach my $file (@{ $fileList }) {
        system("sqlldr $oraLogin $path/$file rows=10000 errors=99999 $
+path/sqlldr.log");
    }       
}
[download]