I suspect that upgrading Exporter will do the trick. The real problem is that DBD::DB2 makes assumptions about DBI's internals. It uses

require_version DBI 1.41;
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instead of

use DBI 1.41;
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or

DBI->VERSION(1.41);
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You can change /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi/DBD/DB2.pm line 27 to either.