Troubles with connection to Oracle 8.1.5 server

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I am use:
Solaris 8 on Intel, Oracle 8.1.5, DBI-1.18, DBD-Oracle-1.08

My script:

#! /usr/bin/perl

use DBI;
use strict;

my $dbh = DBI->connect( "dbi:Oracle:base", 'user', 'pass',) or die $DBI::errstr; #line 
16 here

$dbh->disconnect;

Probmem:
 if i try to connect with Oracle with DBD compiled with default settings (perl 
Makefile.PL) a have error: 

DBI->connect(cboss) failed: ORA-03120: two-task conversion routine: integer overflow 
(DBD ERROR: OCISessionBegin) at ./otest line 16
Segmentation Fault

if i compile DBD with old OCI interface (perl Makefile.PL -8), i receive another error:

DBI->connect(cboss) failed: ORA-01009: missing mandatory parameter (DBD: login failed) 
at ./otest line 16
Segmentation Fault

Help me brothers, if it realy...

But I think just DBD-Oracle simply not support Oracle 8i...