I'm hung up with accessing OS390 VSAM files. I've the feeling that I nearly tried everything. I now can open them, read them sequentially and position them to the last line, but the vsamlocate command doesn't want to work. So I can't set the file position to a desired key. 
use strict;
use warnings;
use OS390::Stdio qw( :CONSTANTS :FUNCTIONS ); 

    my $fh = mvsopen("//'FILE.NAME'", "rb") or die $!;

    my $key = "THIS IS THE KEY";
    my $key_ptr = pack( 'P15', $key );
    
    my $ret = vsamlocate( $fh, $key_ptr, 15, KEY_GE ) or die $!;

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I don't know why this doesn't work. Is it the key or the file? In principle vsamlocate is only a call of flocate(). Can you help please?

In reply to OS390 VSAM-files by petermoessinger

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