AutoUpgrade and the Partial Offline Backup Strategy

In our Fallback talk we promote a backup strategy for large DWHs and database which are on purpose in NOARCHIVELOG mode. But last week I learned that there is something important to know about AutoUpgrade and the Partial Offline Backup Strategy. Otherwise you may hit a

AutoUpgrade and the Partial Offline Backup Strategy

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Partial Offline Backup Strategy?

I won’t explain in all details what this is. If you’d like to read more, please find all the necessary information on my blog post from July 17, 2018:

with graphics included. In brief, you take …

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Troubleshooting, Restoring and Restarting AutoUpgrade

What if … something goes wrong during your database upgrade with AutoUpgrade? Of course, this never happens. But just in case, no worries – one of the really big advantages of AutoUpgrade (and the command line upgrade with “dbupgrade” as well) is its resumability and restartablity. But in this blog post I would like to cover a bit more. I will show you more details on Troubleshooting, Restoring and Restarting AutoUpgrade.

Troubleshooting, Restoring and Restarting AutoUpgrade

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And as often, the cause for this blog post is an email from Hervé Schweitzer, the CTO of dbi-services. Hervé told …

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Ouch, this hurts: bug 21923026 – patch Oracle 12c Home before upgrading if you have OLTP Compression in 11g


Actually I’d consider this as a real serious issue which may affect many customers with larger deployments using the Advanced Compression Option’s OLTP Compression.

I came across it as Don Seiler full of anger twittered some bad words about Oracle Database We’ve exchanged a good number of emails – and I could see the issues Don and his colleagues got while assisting a customer to go live on Oracle Database 12c.

The most interesting one happened on the physical standby after the primary got upgraded. The MRP failed with an ORA-600.


After upgrading from Oracle to …

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Upgrade Fallback: Offline Backup??

When me an Roy talk about Fallback Scenarios in our Upgrade Workshop we cover first issues happening during the upgrade and second issues happening a few days (hours, weeks) after the upgrade.

One of the fallback options for issues encountered during the upgrade is to take an offline backup. Ok, not a complete offline backup of your 24TB database. Take all data tablespaces into read-only mode, then shutdown the database. Take a backup of all datafiles for SYSTEM, SYSAUX and UNDO plus the controlfiles plus the redologs. TEMP files are not a requirement as you could …

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