fetch error after DB2 query

Hi,

I'm migrating to redhat Red Hat Enterprise Linux Server release 6.1 
(Santiago) (64).
On my old server i have a perl script that using DBI queries a DB2 
database to read the occupation of the dataspace.
The query is done correctly but the values continues to fetch until it 
finds an empty table.

On the new server i get this message:

fbh 6: 'maxsize' NULLable, type -5,  20, dsize 19, p0 s18965564
    out: ftype 1, indp 0, bufl 81, rlen 81
<- prepare= ( DBI::st=HASH(0xba2c30) ) [1 items] at Hobbit_fd_lib.pm 
line 1089 via  at dbcheck.pl line 1356
     -> execute for DBD::DB2::st (DBI::st=HASH(0xba2c30)~0x107fd20)
<- execute= ( -1 ) [1 items] at Hobbit_fd_lib.pm line 1093 via  at 
Hobbit_fd_lib.pm line 1090
     -> fetchall_arrayref in DBD::_::st for DBD::DB2::st 
(DBI::st=HASH(0xba2c30)~0x107fd20 HASH(0x1080260))
2 <- FETCH= ( [ 'name' 'size' 'free' 'used' 'usedpct' 'autoextend' 
'maxsize' ] ) [1 items] at DBI.pm line 2043 via  at Hobbit_fd_lib.pm 
line 1099
     dbd_st_fetch 7 fields
         0: rc=0 'SYSCATSPACE'
         1: rc=0 '745013248'
         2: rc=0 '142999552'
         3: rc=0 '602013696'
         4: rc=0 '80.80'
         5: rc=0 '1'
         6: rc=0 '-1'

(..)


2 <> FETCH= ( [ 'name' 'size' 'free' 'used' 'usedpct' 'autoextend' 
'maxsize' ] ) [1 items] ('NAME' from cache) at DBI.pm li
ne 2043 via  at Hobbit_fd_lib.pm line 1099
     !! info: '' '[IBM][CLI Driver][DB2/AIX64] SQL0100W  No row was 
found for FETCH, UPDATE or DELETE; or the result of a quer
y is an empty table.  SQLSTATE=02000
' (err#0)

---------------
Summary of my perl5 (revision 5 version 12 subversion 4) configuration:

   Platform:
     osname=linux, osvers=2.6.32-131.6.1.el6.x86_64, archname=x86_64-linux
     uname='linux my.server 2.6.32-131.6.1.el6.x86_64 #1 smp mon jun 20 
14:15:38 edt 2011 x86_64 x86_64 x86_64 gnulinux '
     config_args='-de -Dcc=gcc -Dprefix=/opt/perl5'
     hint=recommended, useposix=true, d_sigaction=define
     useithreads=undef, usemultiplicity=undef
     useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
     use64bitint=define, use64bitall=define, uselongdouble=undef
     usemymalloc=n, bincompat5005=undef
   Compiler:
     cc='gcc', ccflags ='-fno-strict-aliasing -pipe -fstack-protector 
-I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
     optimize='-O2',
     cppflags='-fno-strict-aliasing -pipe -fstack-protector 
-I/usr/local/include'
     ccversion='', gccversion='4.4.5 20110214 (Red Hat 4.4.5-6)', 
gccosandvers=''
     intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
     d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
     ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', 
lseeksize=8
     alignbytes=8, prototype=define
   Linker and Libraries:
     ld='gcc', ldflags =' -fstack-protector -L/usr/local/lib'
     libpth=/usr/local/lib /lib/../lib64 /usr/lib/../lib64 /lib /usr/lib 
/lib64 /usr/lib64 /usr/local/lib64
     libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lc
     perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
     libc=/lib/libc-2.12.so, so=so, useshrplib=false, libperl=libperl.a
     gnulibc_version='2.12'
   Dynamic Linking:
     dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
     cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib 
-fstack-protector'


Characteristics of this binary (from libperl):
   Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP 
USE_64_BIT_ALL
                         USE_64_BIT_INT USE_LARGE_FILES USE_PERLIO
                         USE_PERL_ATOF
   Built under linux
   Compiled at Sep 15 2011 10:39:35
   @INC:
     /opt/perl5/lib/site_perl/5.12.4/x86_64-linux
     /opt/perl5/lib/site_perl/5.12.4
     /opt/perl5/lib/5.12.4/x86_64-linux
     /opt/perl5/lib/5.12.4
----------------------

Program Information
         dbcheck.pl version 1.08
         Hobbit_fd_lib.pm version 1.15

OS Information
         Linux my.server 2.6.32-131.6.1.el6.x86_64 #1 SMP Mon Jun 20 
14:15:38 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
         Perl version is v5.12.4

Module Information
         FindBin 1.50
         POSIX 1.19
         Text::Wrap 2009.0305
         Sys::SigAction 0.15
         Config::IniFiles 2.68
         DBI 1.616
         DBD::DB2 1.81
         DBD::DBM 0.06
         DBD::ExampleP 12.014310
         DBD::File 0.40
         DBD::Gofer 0.014282
         DBD::SQLite 1.33
         DBD::Sponge 12.010002
         DBD::mysql 4.020

-----------------
Thanks in advance for your help

Marco