my $dbConnectString = 'dbi:Oracle:' .
  '(LOAD_BALANCE=on)'.
  '(ADDRESS=(PROTOCOL=TCP)(HOST=myhost1)(PORT=1521))'.
  '(ADDRESS=(PROTOCOL=TCP)(HOST=myhost2)(PORT=1521))'.
  '(CONNECT_DATA=(SERVICE_NAME=pcipJDBC.oracle.com))';