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Lu, Huayi
a24ca60074
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
101 lines
7.9 KiB
HTML
101 lines
7.9 KiB
HTML
<a name="EN-US_TOPIC_0000001098814512"></a><a name="EN-US_TOPIC_0000001098814512"></a>
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<h1 class="topictitle1">PGXC_VARIABLE_INFO</h1>
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<div id="body1562579026932"><p id="EN-US_TOPIC_0000001098814512__p02888151491"><strong id="EN-US_TOPIC_0000001098814512__b19298181319020">PGXC_VARIABLE_INFO</strong> displays information about transaction IDs and OIDs of all nodes in a cluster.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001098814512__table118381565499" frame="border" border="1" rules="all"><caption><b>Table 1 </b>PGXC_VARIABLE_INFO columns</caption><thead align="left"><tr id="EN-US_TOPIC_0000001098814512__row0838195616495"><th align="left" class="cellrowborder" valign="top" width="22.6022602260226%" id="mcps1.3.2.2.4.1.1"><p id="EN-US_TOPIC_0000001098814512__a8c27b079c0574b64bf8b671a6925a423">Name</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="19.001900190019004%" id="mcps1.3.2.2.4.1.2"><p id="EN-US_TOPIC_0000001098814512__a0e69204044f74dfeac860a683cc857b2">Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="58.3958395839584%" id="mcps1.3.2.2.4.1.3"><p id="EN-US_TOPIC_0000001098814512__a7f2893faca834a5e9aaf712a4bd4c49b">Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0000001098814512__row583935615493"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p8824359510">node_name</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p2485111625110">text</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p34661427155115">Node name</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row18393569491"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p1682414510511">nextOid</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p104851816205112">oid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p17466202755119">OID generated next time for a node</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row12839195614918"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p9824185125117">nextXid</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p144857167517">xid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p2467182735119">Transaction ID generated next time for a node</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row284075674919"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p68246595117">oldestXid</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p1348510165516">xid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p4467122775110">Oldest transaction ID for a node</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row584085614499"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p282545185111">xidVacLimit</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p748611616515">xid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p2467172715112">Critical point that triggers forcible autovacuum</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row1884019567499"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p18257518515">oldestXidDB</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p1248610168513">oid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p34671127145111">OID of the database that has the minimum <strong id="EN-US_TOPIC_0000001098814512__b101354531474">datafrozenxid</strong> on a node</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row684035611496"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p1882510585118">lastExtendCSNLogpage</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p12486816175112">integer</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p546762715511">Number of the last extended csnlog page</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row19328613145014"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p48251559514">startExtendCSNLogpage</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p0486101615515">integer</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p15911578419">Number of the page from which the csnlog extending starts</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row14628918135012"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p10825205105112">nextCommitSeqNo</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p7486191665110">integer</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p94674271514">CSN generated next time for a node</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row4862724115015"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p7825355518">latestCompletedXid</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p048721619513">xid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p1046732711518">Latest transaction ID on a node after the transaction commission or rollback</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001098814512__row143712033175017"><td class="cellrowborder" valign="top" width="22.6022602260226%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001098814512__p15825255519">startupMaxXid</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.001900190019004%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001098814512__p18487151645110">xid</p>
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</td>
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<td class="cellrowborder" valign="top" width="58.3958395839584%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001098814512__p17467122719517">Last transaction ID before a node is powered off</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0639.html">System Views</a></div>
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</div>
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</div>
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