<p>How to make database connection pool in PowerBuilder (v9+) with...</p>

<ul>
<li>...ODBC?</li>
<li>...SQL Server?</li>
<li>...Oracle?</li>
</ul>

Unfortunately, at least with PB 9, you can't
natively
.  PB has always been a two-tier dev tool.  However, if you are using the WebServices support that started in PB 9 you can get around this limitation by invoking WebServices on a connection pooled appServer.  I haven't played with PB 11.5 yet BTW.  Could be different there.
Jason