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<h1>22. Virtuoso Functions Guide - sys_lockdown</h1>
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<div id="text">
<h2>sys_lockdown</h2>
<div class="refpurpose">Set virtuoso in lockdown state and back.</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">sys_lockdown</span>
</span>
(<span class="paramdef">in <span class="parameter">lock_action</span> integer</span>,
<span class="paramdefoptional">[in <span class="optional">listeners_mode</span> integer]</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>You must have DBA privileges to run that function.</p>
<p>Calling this with lock_mode = 1 causes the server not to accept any new client
connections, except ones coming from localhost (127.0.0.1). This will also shut down any other
listeners and terminate any possibly pending processing, rolling back all open transactions and
disconnecting all clients, except ones from localhost. Calling thi with lock_mode 0 reverses the effect.
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">lock_action – </span>
(0|1) - 0 = unlock the server; 1 = lock the server
</div>
<div class="refsect2">
<span class="refsect2title">listeners – </span>
(0|1 default 0) - 0 = don't serve the listener sockets; 1 = close the listener sockets
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>Lock mode (lock_action = 1) if already in that mode returns 0 otherwise returns 1</p>
<p>Unlock mode (lock_action = 0) if already in that mode returns 0 otherwise returns 2</p>
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