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<html>
<head>
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<title>17.16.Short Options</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="sect1" lang="en">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="runtime-config-short"></a>17.16.Short Options</h2></div></div></div>
<p>    For convenience there are also single letter command-line option switches
    available for some parameters. They are described in <a href="runtime-config-short.html#runtime-config-short-table" title="Table17.1.Short option key">Table17.1, &#8220;Short option key&#8221;</a>.
   </p>
<div class="table">
<a name="runtime-config-short-table"></a><p class="title"><b>Table17.1.Short option key</b></p>
<div class="table-contents"><table summary="Short option key" border="1">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>Short option</th>
<th>Equivalent</th>
</tr></thead>
<tbody>
<tr>
<td><code class="option">-B <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">shared_buffers = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td><code class="option">-d <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">log_min_messages = DEBUG<em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td><code class="option">-F</code></td>
<td><code class="literal">fsync = off</code></td>
</tr>
<tr>
<td><code class="option">-h <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">listen_addresses = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td><code class="option">-i</code></td>
<td><code class="literal">listen_addresses = '*'</code></td>
</tr>
<tr>
<td><code class="option">-k <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">unix_socket_directory = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td><code class="option">-l</code></td>
<td><code class="literal">ssl = on</code></td>
</tr>
<tr>
<td><code class="option">-N <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">max_connections = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td><code class="option">-p <em class="replaceable"><code>x</code></em></code></td>
<td><code class="literal">port = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td>          <code class="option">-fb</code>, <code class="option">-fh</code>, <code class="option">-fi</code>,
          <code class="option">-fm</code>, <code class="option">-fn</code>,
          <code class="option">-fs</code>, <code class="option">-ft</code><sup>[<a name="fn.runtime-config-short" href="#ftn.fn.runtime-config-short">a</a>]</sup>
         </td>
<td>          <code class="literal">enable_bitmapscan = off</code>,
          <code class="literal">enable_hashjoin = off</code>,
          <code class="literal">enable_indexscan = off</code>,
          <code class="literal">enable_mergejoin = off</code>,
          <code class="literal">enable_nestloop = off</code>,
          <code class="literal">enable_seqscan = off</code>,
          <code class="literal">enable_tidscan = off</code>
         </td>
</tr>
<tr>
<td>
<code class="option">-s</code><sup>[<a href="#ftn.fn.runtime-config-short">a</a>]</sup>
</td>
<td><code class="literal">log_statement_stats = on</code></td>
</tr>
<tr>
<td>
<code class="option">-S <em class="replaceable"><code>x</code></em></code><sup>[<a href="#ftn.fn.runtime-config-short">a</a>]</sup>
        </td>
<td><code class="literal">work_mem = <em class="replaceable"><code>x</code></em></code></td>
</tr>
<tr>
<td>
<code class="option">-tpa</code>, <code class="option">-tpl</code>, <code class="option">-te</code><sup>[<a href="#ftn.fn.runtime-config-short">a</a>]</sup>
</td>
<td>
<code class="literal">log_parser_stats = on</code>,
        <code class="literal">log_planner_stats = on</code>, 
        <code class="literal">log_executor_stats = on</code>
</td>
</tr>
</tbody>
<tbody class="footnotes"><tr><td colspan="2"><div class="footnote"><p><sup>[<a name="ftn.fn.runtime-config-short" href="#fn.runtime-config-short">a</a>] </sup>            For historical reasons, these options must be passed to
            the individual server process via the <code class="option">-o</code>
            <code class="command">postmaster</code> option, for example,
<pre class="screen">$ <strong class="userinput"><code>postmaster -o '-S 1024 -s'</code></strong></pre>
            or via <code class="envar">PGOPTIONS</code> from the client side, as
            explained above.
           </p></div></td></tr></tbody>
</table></div>
</div>
<br class="table-break">
</div></body>
</html>