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    <p>This is not a deadlock, this is lost connection problem.</p> <p>A deadlock occurs when two transactions try to lock the resources previously locked by each other. <code>PostgreSQL</code> detects these situations.</p> <p>In your case, <code>master</code> locks a resource, <code>slave</code> waits for <code>master</code>, and <code>master</code> waits for the user input which it never receives because the connection is lost.</p> <p>Whenever <code>PostgreSQL</code> detects a lost connection, it rollbacks its transaction automatically.</p> <p>To control connection loss detection, you can use the following <code>PostgreSQL</code> <a href="http://www.postgresql.org/docs/8.2/static/runtime-config-connection.html" rel="nofollow noreferrer"><strong>connection options</strong></a>:</p> <blockquote> <p><code>tcp_keepalives_idle (integer)</code></p> <p>On systems that support the <code>TCP_KEEPIDLE</code> socket option, specifies the number of seconds between sending keepalives on an otherwise idle connection. A value of zero uses the system default. If <code>TCP_KEEPIDLE</code> is not supported, this parameter must be zero. This parameter is ignored for connections made via a Unix-domain socket. </p> <p><code>tcp_keepalives_interval (integer)</code></p> <p>On systems that support the <code>TCP_KEEPINTVL</code> socket option, specifies how long, in seconds, to wait for a response to a keepalive before retransmitting. A value of zero uses the system default. If <code>TCP_KEEPINTVL</code> is not supported, this parameter must be zero. This parameter is ignored for connections made via a Unix-domain socket. </p> <p><code>tcp_keepalives_count (integer)</code></p> <p>On systems that support the <code>TCP_KEEPCNT</code> socket option, specifies how many keepalives may be lost before the connection is considered dead. A value of zero uses the system default. If <code>TCP_KEEPCNT</code> is not supported, this parameter must be zero. This parameter is ignored for connections made via a Unix-domain socket. </p> </blockquote>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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