<refnamediv>

<refname>pg_receivexlog</refname>

<refpurpose>streams transaction logs from a <productname>PostgreSQL</productname>cluster</refpurpose>

<refpurpose>stream transaction logs from a <productname>PostgreSQL</productname>server</refpurpose>

</refnamediv>

<refsynopsisdiv>

<refsect1>

<title>Options</title>

<para>

The following command-line options control the location and format of the

output.

<variablelist>

<varlistentry>

<term><option>-D <replaceable class="parameter">directory</replaceable></option></term>

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

<para>

The following command-line options control the running of the program.

<variablelist>

<varlistentry>

<term><option>-n</option></term>

<term><option>--no-loop</option></term>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-s <replaceable class="parameter">interval</replaceable></option></term>

<term><option>--status-interval=<replaceable class="parameter">interval</replaceable></option></term>

<listitem>

<para>

Specifies the number of seconds between status packets sent back to the

server. This allows for easier monitoring of the progress from server.

A value of zero disables the periodic status updates completely,

although an update will still be sent when requested by the server, to

avoid timeout disconnect. The default value is 10 seconds.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-S <replaceable>slotname</replaceable></option></term>

<term><option>--slot=<replaceable class="parameter">slotname</replaceable></option></term>

<listitem>

<para>

Require <application>pg_receivexlog</application> to use an existing

replication slot (see <xref linkend="streaming-replication-slots">).

When this option is used, <application>pg_receivexlog</> will report

a flush position to the server, indicating when each segment has been

synchronized to disk so that the server can remove that segment if it

is not otherwise needed. When using this parameter, it is important

to make sure that <application>pg_receivexlog</> cannot become the

synchronous standby through an incautious setting of

<xref linkend="guc-synchronous-standby-names">; it does not flush

data frequently enough for this to work correctly.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-v</option></term>

<term><option>--verbose</option></term>

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

<para>

The following command-line options control the database connection parameters.

</listitem>

</varlistentry>

<varlistentry>

<term><option>-s <replaceable class="parameter">interval</replaceable></option></term>

<term><option>--status-interval=<replaceable class="parameter">interval</replaceable></option></term>

<listitem>

<para>

Specifies the number of seconds between status packets sent back to the

server. This allows for easier monitoring of the progress from server.

A value of zero disables the periodic status updates completely,

although an update will still be sent when requested by the server, to

avoid timeout disconnect. The default value is 10 seconds.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-U <replaceable>username</replaceable></option></term>

<term><option>--username=<replaceable class="parameter">username</replaceable></option></term>

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-S <replaceable>slotname</replaceable></option></term>

<term><option>--slot=<replaceable class="parameter">slotname</replaceable></option></term>

<listitem>

<para>

Require <application>pg_receivexlog</application> to use an existing

replication slot (see <xref linkend="streaming-replication-slots">).

When this option is used, <application>pg_receivexlog</> will report

a flush position to the server, indicating when each segment has been

synchronized to disk so that the server can remove that segment if it

is not otherwise needed. When using this parameter, it is important

to make sure that <application>pg_receivexlog</> cannot become the

synchronous standby through an incautious setting of

<xref linkend="guc-synchronous-standby-names">; it does not flush

data frequently enough for this to work correctly.

</para>

</listitem>

</varlistentry>

</variablelist>

</para>