These are attributes that have a short lifespan and are only available immediately after being set. They apply to the handle that's just been returned.
$DBI::err
The same as $handle->err.
$DBI::errstr
The same as $handle->errstr.
$DBI::lasth
Returns the DBI handle used with the most recent DBI method call or the parent of the handle (if it exists) if the method call was a DESTROY.
$DBI::rows
The same as $handle->rows.
$DBI::state
The same as $handle->state.