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lines changed Original file line number Diff line number Diff line change @@ -185,9 +185,11 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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<filename>pg_stat_tmp</filename> by default.
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For better performance, <varname>stats_temp_directory</> can be
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pointed at a RAM-based file system, decreasing physical I/O requirements.
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- When the server shuts down, a permanent copy of the statistics
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+ When the server shuts down cleanly , a permanent copy of the statistics
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data is stored in the <filename>global</filename> subdirectory, so that
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- statistics can be retained across server restarts.
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+ statistics can be retained across server restarts. When recovery is
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+ performed at server start (e.g. after immediate shutdown, server crash,
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+ and point-in-time recovery), all statistics counters are reset.
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</para>
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</sect2>
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