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<p class=MsoNormal><span style='color:#1F497D'>Hi Marty,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Is key compression stable?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>About a year ago I worked on a
problem in 10.2 where a simple transaction rollback left the DB inconsistent.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The work around was to avoid
using key compression on an index.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Original issue: a normal operational
transaction roll back failed.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM0055_NONEXT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM968E_DMVE_BTREE_FIND<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM968F_DMVE_BID_CHECK
<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM964E_DMVE_BTREE_PUT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM967A_DMVE_UNDO<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9639_DMVE_UNDO<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9509_DMXE_PASS_ABORT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM0055_NONEXT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM968E_DMVE_BTREE_FIND<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM968F_DMVE_BID_CHECK<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM964E_DMVE_BTREE_PUT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM967A_DMVE_UNDO<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9639_DMVE_UNDO<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM943A_APPLY_UNDO<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM943E_RCP_DBUNDO_ERROR<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM943B_RCP_DBINCONSISTENT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_CL0F0F_LG_DB_INCONSISTENT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Then cycling<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM900C_BAD_LOG_BEGIN<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9500_DMXE_BEGIN <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_CL0F0F_LG_DB_INCONSISTENT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM900C_BAD_LOG_BEGIN<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9500_DMXE_BEGIN<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>So I tried Rollforwarddb but
failed with <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM943E_RCP_DBUNDO_ERROR<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM943B_RCP_DBINCONSISTENT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_CL0F0F_LG_DB_INCONSISTENT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM0152_DB_INCONSIST_DETAIL<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9015_BAD_LOG_WRITE
<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9215_DM0L_PUT
Error <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM0100_DB_INCONSISTENT
<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>and<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM9352_BAD_DMP_NOT_FOUND <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>E_DM1307_RFP_RESTORE<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Our Ingres support guru had a
magic parameter for rollforwardb which allowed us to restore all but
inconsistent index. Dropped and recreated the index to fix the problem.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>So, we don’t use key
compression.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Paul<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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"'> info-ingres-bounces@lists.planetingres.org
[mailto:info-ingres-bounces@lists.planetingres.org] <b>On Behalf Of </b>Martin
Bowes<br>
<b>Sent:</b> Wednesday, 10 October 2018 5:12 PM<br>
<b>To:</b> Laframboise, André (BAC/LAC); info-ingres@lists.planetingres.org<br>
<b>Subject:</b> Re: [Info-ingres] W_DM500C_ORPHAN_DATA_PAGE<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>We tried.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>It didn’t.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>I was disappointed.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Marty</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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"'> Laframboise, André (BAC/LAC)
[mailto:andre.laframboise@canada.ca] <br>
<b>Sent:</b> 09 October 2018 13:53<br>
<b>To:</b> Martin Bowes; info-ingres@lists.planetingres.org<br>
<b>Subject:</b> Re: [Info-ingres] W_DM500C_ORPHAN_DATA_PAGE</span><span
lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB> <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Hi,</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Errors look related
to an indexing structure problem. Data pages themselves seem to be intact. A
verifydb –table operation may have also fixed it.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-CA style='color:#1F497D'> </span><span
lang=EN-GB><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 lang=EN-CA 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 lang=EN-CA 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 lang=EN-CA 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 lang=EN-CA 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><span style='border:solid windowtext 1.0pt;padding:0cm'><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
id="Picture_x0020_6" src="cid:image001.jpg@01D460BE.63257940"
alt="Image removed by sender. http://www.bac-lac.gc.ca/eng/events/PublishingImages/banner.jpg"></span></a></span><span
lang=FR-CA style='color:black'><br>
</span><span lang=EN-GB><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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</span><span
lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-CA> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>And an
addendum…</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><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.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><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.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><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.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>Marty</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> </span><span
lang=EN-GB><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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</span><span lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<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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