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<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Errors look related to an indexing structure problem. Data pages themselves seem to be intact. A verifydb –table operation may have also fixed it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">André Laframboise<br>
<br>
Conseiller Principal Base de Données, Direction générale de l'Innovation et du Dirigeant principal de l'information<br>
</span><span style="color:black"><a href="http://www.bac-lac.gc.ca/fra/Pages/bac-web.aspx"><span lang="FR-CA">Bibliothèque et Archives Canada</span></a></span><span lang="FR-CA" style="color:black"> / Gouvernement du Canada
<br>
</span><span style="color:black"><a href="mailto:andre.laframboise@canada.ca"><span lang="FR-CA">andre.laframboise@canada.ca</span></a></span><span lang="FR-CA" style="color:black"> / Tél. : 613-298-1346<br>
<br>
Senior Database Advisor, Innovation and Chief Information Officer Branch<br>
</span><span style="color:black"><a href="http://www.bac-lac.gc.ca/eng/Pages/lac-web.aspx"><span lang="FR-CA">Library and Archives Canada</span></a></span><span lang="FR-CA" style="color:black"> / Government of Canada<br>
</span><span style="color:black"><a href="mailto:andre.laframboise@canada.ca"><span lang="FR-CA">andre.laframboise@canada.ca</span></a></span><span lang="FR-CA" style="color:black"> / Tel: 613-298-1346<br>
<br>
</span><a href="http://www.bac-lac.gc.ca/eng/events/Pages/events.aspx"><span style="text-decoration:none"><img border="0" width="320" height="112" style="width:3.3333in;height:1.1666in" id="_x0000_i1025" src="http://www.bac-lac.gc.ca/eng/events/PublishingImages/banner.jpg" alt="http://www.bac-lac.gc.ca/eng/events/PublishingImages/banner.jpg"></span></a><span lang="FR-CA" style="color:black"><br>
</span><span lang="FR-CA" style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> info-ingres-bounces@lists.planetingres.org <info-ingres-bounces@lists.planetingres.org>
<b>On Behalf Of </b>Martin Bowes<br>
<b>Sent:</b> Monday, October 8, 2018 6:46 AM<br>
<b>To:</b> Martin Bowes <martin.bowes@ndph.ox.ac.uk>; info-ingres@lists.planetingres.org<br>
<b>Subject:</b> Re: [Info-ingres] W_DM500C_ORPHAN_DATA_PAGE<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D">And an addendum…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D">I copied the data to disk and loaded it into a temp database. The expected number of rows came with it and the verifydb said the same thing on the temp database.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D">I modified the table to reconstruct with nocompression and the verifydb problem disappeared.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D">So I’ve decided that the message is probably more incendiary than real.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D">Marty<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma",sans-serif">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma",sans-serif"> Martin Bowes [<a href="mailto:martin.bowes@ndph.ox.ac.uk">mailto:martin.bowes@ndph.ox.ac.uk</a>]
<br>
<b>Sent:</b> 08 October 2018 10:51<br>
<b>To:</b> <a href="mailto:info-ingres@lists.planetingres.org">info-ingres@lists.planetingres.org</a><br>
<b>Subject:</b> [Info-ingres] W_DM500C_ORPHAN_DATA_PAGE<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Recently had a need to run verifydb over every table in a database. How concerned should I be about:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">W_DM502B_INVALID_BT_KIDS WARNING: index/leaf page 1 is unreadable because bt_kids has invalid value<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">of 511. (Valid values range from 0 to 510.)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">W_DM500C_ORPHAN_DATA_PAGE WARNING: data page 326618 is an unreferenced page (or orphan). All data on this<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">page or any overflow pages chained to it is effectively lost.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">How concerned should I be given these are warnings?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">The table in question is a btree unique. It has data and key compression.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Martin Bowes<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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