Memory limit of 10240 KB exceeded for buffered query

That is a big result set and hence you appear to be reaching your server memory limit.

You can try changing it with a php.ini file (check with your host though), ( Something like ini_set("memory_limit","24M"); )

Alternatively, unless you really need 16,000 rows try limiting the results to the amount you need, say 20 rows for display with some sort of pagination system for navigating deeper.

Paul.