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Commit7b1dbf0

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More documentation updates for incremental backup.
Add new terms to glossary. Add a reference to walsummarizerto monitoring.sgml.Matthias van de Meent and Robert HaasDiscussion:http://postgr.es/m/CAEze2WjhdVCqEe_qqEok3NA6DwUdOGSBjAxzmYdAqiaaH1uRcg@mail.gmail.com
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‎doc/src/sgml/glossary.sgml

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</para>
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</glossdef>
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</glossentry>
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<glossentry id="glossary-incremental-backup">
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<glossterm>Incremental backup</glossterm>
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<glossdef>
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<para>
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A special <glossterm linkend="glossary-basebackup">base backup</glossterm>
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that for some files may contain only those pages that were modified since
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a previous backup, as opposed to the full contents of every file. Like
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base backups, it is generated by the tool <xref linkend="app-pgbasebackup"/>.
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</para>
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<para>
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To restore incremental backups the tool <xref linkend="app-pgcombinebackup"/>
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is used, which combines incremental backups with a base backup and
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<glossterm linkend="glossary-wal">WAL</glossterm> to restore a
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<glossterm linkend="glossary-db-cluster">database cluster</glossterm> to
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a consistent state.
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</para>
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<para>
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For more information, see <xref linkend="backup-incremental-backup"/>.
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</para>
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</glossdef>
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</glossentry>
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<glossentry id="glossary-insert">
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<glossterm>Insert</glossterm>
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</glossdef>
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</glossentry>
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<glossentry id="glossary-wal-summarizer">
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<glossterm>WAL summarizer (process)</glossterm>
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<glossdef>
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<para>
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A special <glossterm linkend="glossary-backend">backend process</glossterm>
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that summarizes WAL data for
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<glossterm linkend="glossary-incremental-backup">incremental backups</glossterm>.
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</para>
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<para>
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For more information, see <xref linkend="runtime-config-wal-summarization"/>.
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</para>
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</glossdef>
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</glossentry>
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<glossentry id="glossary-wal-writer">
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<glossterm>WAL writer (process)</glossterm>
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<glossdef>

‎doc/src/sgml/monitoring.sgml

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<literal>client backend</literal>, <literal>checkpointer</literal>,
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<literal>archiver</literal>, <literal>standalone backend</literal>,
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<literal>startup</literal>, <literal>walreceiver</literal>,
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<literal>walsender</literal> and <literal>walwriter</literal>.
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<literal>walsender</literal>, <literal>walwriter</literal> and
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<literal>walsummarizer</literal>.
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In addition, background workers registered by extensions may have
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additional types.
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</para></entry>

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