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luhuayi 177cd61a57 DWS DEVG 910.211 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>
2025-05-05 07:44:03 +00:00

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<a name="EN-US_TOPIC_0000001764650060"></a><a name="EN-US_TOPIC_0000001764650060"></a>
<h1 class="topictitle1">PG_STAT_OBJECT</h1>
<div id="body8662426"><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13237141072220">Records table statistics and autovacuum efficiency information of the current DB instance, and creates indexes for the <strong id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_b78053381746">databaseid</strong>, <strong id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_b17642421413">relid</strong>, and <strong id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_b08961144744">partid</strong> columns. Update of this system catalog is controlled by the <a href="dws_04_0923.html#EN-US_TOPIC_0000001764650468__section4328534144311">enable_pg_stat_object</a> parameter. This system catalog is supported only by clusters of version 8.2.1 or later.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_t6247b73f46cc4eb6904f6623110bea20" frame="border" border="1" rules="all"><caption><b>Table 1 </b>PG_STAT_OBJECT columns</caption><thead align="left"><tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_r6c512e626bf94ba7bf3328415c78ca1b"><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.2.5.1.1"><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_a0eeafe6a04a64cdda812ca5fa10bf53f"><strong id="EN-US_TOPIC_0000001764650060__b158940287243451">Column</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="15.440000000000001%" id="mcps1.3.2.2.5.1.2"><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_a742db4b571df4fbfa8792c07ee574c53">Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="19.56%" id="mcps1.3.2.2.5.1.3"><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_a9d58a61982854516b4a12fbe45b20797">Reference</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="45%" id="mcps1.3.2.2.5.1.4"><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_a454ad9ceb13a4d96a00620a5629c87fa">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_r0483813893fb4b47bee9e92dff248b31"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p205782029181519">databaseid</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p95781298156">OID</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1848372594016"><a href="dws_04_0582.html">PG_DATABASE</a>.oid</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p16577192981519">Database OID.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row19483225154019"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1257610296152">relid</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1857562961520">OID</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p115751329161515"><a href="dws_04_0578.html">PG_CLASS</a>.oid</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p985784411203">Table OID. It is the OID of the primary table for a partitioned table.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_r513e4e9aab1e43c598e7b8376105fe61"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1757452931512">partid</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p65731629171510">OID</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__p275110545442"><a href="dws_04_0606.html">PG_PARTITION</a></p>
<p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p357232911515">.oid</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1385704472013">Partition OID. If the table is not partitioned, the value is <strong id="EN-US_TOPIC_0000001764650060__b29028353179">0</strong>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_r4e1057d952d64f2f98cc1afadb219eb2"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1557182981510">numscans</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p15571182910151">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p16570172917151">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1785754462015">Number of times that sequential scans are started.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row9787045174114"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1456922951510">tuples_returned</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1356814296155">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5568329141518">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5857644132017">Number of visible tuples fetched by sequential scans.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_rfbf78930fc5b48b4b0eb315fa21582d9"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1456614297156">tuples_fetched</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1656582915158">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p155659295154">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p38571844192017">Number of visible tuples fetched.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row181531143102517"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p115631929111510">tuples_inserted</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p11563162991519">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1056215293157">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17857134410207">Number of inserted records.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row415474322519"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1456122917154">tuples_updated</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1356022921520">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1255922941514">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1985704420203">Number of updated records.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row453128161919"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p16531681192">tuples_deleted</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p125318810195">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p85313814195">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p6858184415209">Number of deleted records.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row6302637111917"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5302237111916">tuples_hot_updated</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17302173721910">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1230217375193">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p7858104415207">Number of HOT updates.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row15887154014193"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1288794041919">n_live_tuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p19887204012195">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p4888140171915">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p885804413201">Number of visible tuples.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row187101545181912"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p57101445131917">last_autovacuum_begin_n_dead_tuple</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p2710144517192">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5710745181916">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p7858154416208">Number of tuples deleted before Autovacuum is executed.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row4277147111910"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1927764714198">n_dead_tuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17277147141914">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5277184771915">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p48581344112012">Number of tuples deleted after Autovacuum is successful.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row8269104981914"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p12691449141916">changes_since_analyze</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p102699497195">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p11269149101919">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13858164416201">Last data modification time after Analyze.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row14919134310196"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p10919164301914">blocks_fetched</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p4919943131914">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1291984301911">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p68581344172018">Number of selected pages.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row3741133515207"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p14741335152012">blocks_hit</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p674113350203">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p157411357204">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p28581544142017">Number of scanned pages.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1537053717204"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p193700376201">cu_mem_hit</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p153701737182015">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p15370237152016">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p18581744172019">Number of CU memory hits.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row9779738162010"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p877915386206">cu_hdd_sync</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p477916383207">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5779143815209">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p5859124420203">Times that CUs are synchronously read from disks.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row16959123915201"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17960193917206">cu_hdd_asyn</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p19960193912011">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p19960153910206">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p285914482013">Times that CUs are asynchronously read from disks.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row20256341112018"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p9257194122013">data_changed_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p325717410202">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p15257741122010">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p118591444182016">Last data modification time.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row457994292018"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p157920427202">data_access_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p857912423208">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p11579742162015">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13859134422018">Last access time of a table.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row9887043202013"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p6887443122015">analyze_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p48871243122014">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p15888144311203">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p8859344112018">Last Analyze time.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1120919451204"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p2020914519206">analyze_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p32092453203">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1209745132019">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p485964422010">Total number of Analyze times.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row15756152613915"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p167562262914">autovac_analyze_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p97568263920">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p57573265916">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p158591044182013">Last Autoanalyze time.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1341612285913"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17416228695">autovac_analyze_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p114168289918">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p184171128796">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1085915447202">Total number of Autoanalyze times.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row826818301892"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p7268330392">vacuum_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p14268133014920">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1826973010912">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p8860134492012">Time of the latest Vacuum.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1485263312913"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p15853933898">vacuum_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1285314331595">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p11853113316910">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p086015446201">Total number of Vacuum times.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row85915399911"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p195914391915">autovac_vacuum_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p125911391892">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p10591113918910">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p08601844142017">Last Autovacuum time.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row10650134111917"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p206505411399">autovac_vacuum_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1165012411791">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13650114116919">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p186015449201">Total number of Autovacuum times.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row3471843995"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p4481243595">autovacuum_success_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p184814439912">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p164804312914">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p138601744152017">Total number of successful Autovacuum operations.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row2043284418917"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13432104412910">last_autovacuum_time_cost</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p17432144796">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p84326441690">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p108602449200">Time spent on the latest successful Autovacuum, in microseconds.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1540294610919"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p24021546793">avg_autovacuum_time_cost</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p640215461099">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p640284610910">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1286074416205">Average execution time of successful Autovacuum operations. Unit: μs.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row816184813912"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p101613489911">last_autovacuum_failed_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1616119481596">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p12161124814919">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1386004442019">Total number of autovacuum failures since the last successful Autovacuum.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row4186508913"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p4182509913">last_autovacuum_trigger</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p191895015916">Smallint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p6185501092">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p8648184844616">Triggering mode of the latest autovacuum, which helps maintenance personnel determine the Vacuum status.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row629219511913"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1529210511197">last_autovacuum_oldestxmin</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p192936511918">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p82931351194">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p108612445202"><strong id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_b951854914113">oldestxmin</strong> after the latest successful Autovacuum execution. If the table-level <strong id="EN-US_TOPIC_0000001764650060__b13818131615565">oldestxmin</strong> feature is enabled, this field records the value of <strong id="EN-US_TOPIC_0000001764650060__b172981235185618">oldestxmin</strong> used by the latest <strong id="EN-US_TOPIC_0000001764650060__b146093386564">(AUTO)VACUUM</strong> of the table.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row12768852092"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1876820520914">last_autovacuum_scan_pages</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p167685521193">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p157683521495">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p178611444132014">Number of pages last scanned by autovacuum (only for row-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row449245417914"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1049316541891">last_autovacuum_dirty_pages</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1849315540912">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p114931546911">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p386119445203">Number of pages last modified by Autovacuum (only for row-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row41115562916"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p011125619910">last_autovacuum_clear_deadtuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p711195616918">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p161115561198">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p3861134414204">Number of dead tuples last cleared by Autovacuum (only for row-store tables)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row6717957294"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p77171457693">sum_autovacuum_scan_pages</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p157172570916">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p207175577917">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p186119448207">Total number of pages scanned by Autovacuum since database initialization (only for row-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row37265502107"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p772665071013">sum_autovacuum_dirty_pages</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p127261950171017">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p272617508107">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p19861104432013">Number of pages modified by Autovacuum since database initialization (only for row-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row63004523104"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p193001952101016">sum_autovacuum_clear_deadtuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p113011752131018">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1830125221011">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p3861644162017">Total number of dead tuples cleared by Autovacuum since database initialization (only for row-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row279915321012"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p9799753171011">last_autovacuum_begin_cu_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p979911535100">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p979995311016">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p19861444132010">Size of the CU file before the latest Autovacuum operation (only for column-store tables)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row125718558101"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p112574552104">last_autovacuum_cu_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p102570557104">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p9257165511105">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1986254452019">Size of the CU file after the latest Autovacuum (only for column-store tables)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row17712105616103"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p0712756121012">last_autovacuum_rewrite_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1471216563105">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p971295620101">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1286284414206">Size of the column-store file last rewritten by autovacuum (only for column-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row33252589108"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p532511583102">last_autovacuum_clear_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p6325658131017">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1132515810108">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p9862134422020">Size of the column-store file last cleared by Autovacuum (only for column-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row620912514116"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p182098591116">last_autovacuum_clear_cbtree_tuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1920910518114">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p142099521116">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p486217440207">Number of cbtree tuples last cleared by Autovacuum (only for column-store tables)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1838206111111"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p93829631115">sum_autovacuum_rewrite_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p163825615117">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p838219611113">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p108621444205">Total size of column-store files rewritten by Autovacuum since database initialization (only for column-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row57943791111"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1079437191116">sum_autovacuum_clear_size</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1979410781119">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p279411720112">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1886215445202">Total size of column-store files cleared by Autovacuum since database initialization (only for column-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1510129191116"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p551039191116">sum_autovacuum_clear_cbtree_tuples</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p2051016971114">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1551069161119">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1286284410203">Total number of cbtree tuples cleared by Autovacuum since database initialization (only for column-store tables).</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row280751051111"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1380714101117">last_autovacuum_csn</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p178087101110">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p58081106112">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p10863104412206">If the table-level <strong id="EN-US_TOPIC_0000001764650060__b35443539564">oldestxmin</strong> feature is enabled, this field records the CSN value corresponding to the latest <strong id="EN-US_TOPIC_0000001764650060__b11841210576">oldestxmin</strong> value used by the table <strong id="EN-US_TOPIC_0000001764650060__b17490198145715">(AUTO)VACUUM</strong>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1703101401116"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p137031414161117"></p>
<p id="EN-US_TOPIC_0000001764650060__p15271750193516">last_automerge_timestamp</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p14703101471112">Timestamp with time zone</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p2703161481117">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p3863244172014">Last automerge time (only for HStore_opt tables). This column is supported only by 9.1.0.100 and later versions.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row10190131617117"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p1119019169119"></p>
<p id="EN-US_TOPIC_0000001764650060__p115881136103611">last_automerge_time_cost</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p41901916161113">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p12190111612110">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13863944162018">Time consumed by the last automerge (only for HStore_opt tables). This column is supported only by 9.1.0.100 and later versions.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row1523518421190"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p723584211920"></p>
<p id="EN-US_TOPIC_0000001764650060__p67821340133617">last_automerge_count</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p14235342161913">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p623518426197">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p13863144420207">Number of records in the last automerge (only for HStore_opt tables). This column is supported only by 9.1.0.100 and later versions.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_row7527317131211"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.2.5.1.1 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p205279174121">extra1</p>
</td>
<td class="cellrowborder" valign="top" width="15.440000000000001%" headers="mcps1.3.2.2.5.1.2 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p352741761213">Bigint</p>
</td>
<td class="cellrowborder" valign="top" width="19.56%" headers="mcps1.3.2.2.5.1.3 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p18527917161213">N/A</p>
</td>
<td class="cellrowborder" valign="top" width="45%" headers="mcps1.3.2.2.5.1.4 "><p id="EN-US_TOPIC_0000001764650060__en-us_topic_0000001503359652_p158646444207">Reserved column 1.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div>
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