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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>49.3. Streaming Replication Protocol Interface</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="logicaldecoding-explanation.html" title="49.2. Logical Decoding Concepts" /><link rel="next" href="logicaldecoding-sql.html" title="49.4. Logical Decoding SQL Interface" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">49.3. Streaming Replication Protocol Interface</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="logicaldecoding-explanation.html" title="49.2. Logical Decoding Concepts">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="logicaldecoding.html" title="Chapter 49. Logical Decoding">Up</a></td><th width="60%" align="center">Chapter 49. Logical Decoding</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="logicaldecoding-sql.html" title="49.4. Logical Decoding SQL Interface">Next</a></td></tr></table><hr /></div><div class="sect1" id="LOGICALDECODING-WALSENDER"><div class="titlepage"><div><div><h2 class="title" style="clear: both">49.3. Streaming Replication Protocol Interface</h2></div></div></div><p>
The commands
</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><code class="literal">CREATE_REPLICATION_SLOT <em class="replaceable"><code>slot_name</code></em> LOGICAL <em class="replaceable"><code>output_plugin</code></em></code></p></li><li class="listitem"><p><code class="literal">DROP_REPLICATION_SLOT <em class="replaceable"><code>slot_name</code></em></code> [<span class="optional"> <code class="literal">WAIT</code> </span>]</p></li><li class="listitem"><p><code class="literal">START_REPLICATION SLOT <em class="replaceable"><code>slot_name</code></em> LOGICAL ...</code></p></li></ul></div><p>
are used to create, drop, and stream changes from a replication
slot, respectively. These commands are only available over a replication
connection; they cannot be used via SQL.
See <a class="xref" href="protocol-replication.html" title="55.4. Streaming Replication Protocol">Section 55.4</a> for details on these commands.
</p><p>
The command <a class="xref" href="app-pgrecvlogical.html" title="pg_recvlogical"><span class="refentrytitle"><span class="application">pg_recvlogical</span></span></a> can be used to control
logical decoding over a streaming replication connection. (It uses
these commands internally.)
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="logicaldecoding-explanation.html" title="49.2. Logical Decoding Concepts">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="logicaldecoding.html" title="Chapter 49. Logical Decoding">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="logicaldecoding-sql.html" title="49.4. Logical Decoding SQL Interface">Next</a></td></tr><tr><td width="40%" align="left" valign="top">49.2. Logical Decoding Concepts </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 49.4. Logical Decoding <acronym class="acronym">SQL</acronym> Interface</td></tr></table></div></body></html>
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