Re: Warning - upgrade gotcha

From: Chris Dunscombe <>
Date: Fri, 14 Feb 2014 08:52:10 +0000 (GMT)
Message-ID: <>

Hi, The upgrade was from but I expect it will effect any upgrade to and also any upgrade to 12c from a version prior  to Cheers, Chris On Wednesday, 12 February 2014, 15:48, Hemant K Chitale <> wrote: And we tell our customers / managers that upgrade duration is not related to the volume (size of the database).  Was this upgrade from 10.2 or 11.2 ? Hemant K Chitale     On Feb 12, 2014 11:36 PM, "Chris Dunscombe" <> wrote: Hi all, > > >Just in case you've not come across it there's a potential gotcha when upgrading to We hit it a couple of weeks ago and I believe it affects all platforms. > > >The issue is caused by the database upgrade script, catupgrd.sql, partitioning the statistics history tables, wri$_optstat_histhead_history etc. So if you've got a lot of data in these tables, either because you're keeping a lot of history or the automatic purge job (runs in the maintenance window)  isn't clearing the data down, then the partitioning can take many hours and hence the upgrade takes many hours. > > >The exact time all depends on your hardware and the amount of data in these history tables. Generally the biggest table is wri$_optstat_histhead_history. The readme doesn't make any reference to this > > >HTH > > >Cheers, > > >Chris
Received on Fri Feb 14 2014 - 09:52:10 CET

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