Migrate

3 Live Seminars: Upgrade and Performance Seminar 2 Questions answered

Posted on May 2, 2020 by Mike.Dietrich Workshop 2

Thanks a lot to all of you who participated also in our second seminar. Below you find now 3 Live Seminars: Upgrade and Performance Seminar 2 Questions answered.

3 Live Seminars: Upgrade and Performance Seminar 2 Questions answered

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Your Questions, our Answers for Seminar 2: Upgrade and Performance

I this blog post I answer all questions from the second seminar about AutoUpgrade to Oracle 19c and Performance Stability. Please find the links to the other QAs for Seminar 1 (Release Strategy, Patching and Cool Features) and Seminar 3 (Migration to Multitenant) below in the Links section of this blog post.

We need

New version of Upgrade / Migrate / Consolidate to Oracle 19c uploaded

Posted on October 24, 2019 by Mike.Dietrich Slides 0

Please apologize that it took me a bit longer to upload a new version of our comprehensive slide deck. You can download now a new version of “Upgrade / Migrate / Consolidate to Oracle 19c” via the blog’s download page.

New version of Upgrade / Migrate / Consolidate to Oracle 19c uploaded

Why is there a new version?

Since Oracle Open World 2019 we have a new corporate template. And while I like the graphics quite a bit, I’d say, the people who built it have a good sense for graphics. But they aren’t powerpoint experts. In fact, almost every slide had to be adjusted. This may not be a huge …

Database Migration from non-CDB to PDB – Migration with Data Pump

You may have realized that there are a few techniques missing describing how to do a Database Migration from non-CDB to PDB – Migration with Data Pump is one of them. I will explain the most simple approach of going to Single- or Multitenant. It isn’t the coolest – and it isn’t very fast as soon as your database has a significant size. But it is not complex. And it allows you to move even from very old versions directly into an Oracle 19c PDB – regardless of patch levels or source and destination platform.

Database Migration from non-CDB to PDB – Migration with Data Pump

High Level Overview

Endianness change

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

Posted on August 13, 2019 by Mike.Dietrich Minimal Downtime Single-/Multitenant 6

There are several pitfalls when you plugin a non-CDB into a CDB environment. I’d like to highlight some of them – and show you potential workarounds as well. This is part of a series of blog posts to make your migration from non-CDB to PDB a bit smoother.

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

When we start to look at a migration from non-CDB to PDB for an important system, regardless of migrating on-prem or to the cloud, reducing the downtime is very important. In this blog post I’d like to highlight the different aspects …

Database Migration from non-CDB to PDB – The Fallback Challenge

Posted on August 5, 2019 by Mike.Dietrich Fallback Single-/Multitenant 2

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Database Migration from non-CDB to PDB – The Fallback Challenge

As I work with customers on upgrades and migrations for a very long time, I know how important a proper fallback is.

When you attempt a migration from a non-CDB to PDB, you need to plan …

Database Migration from non-CDB to PDB – Various Pitfalls

Posted on August 2, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 22

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Database Migration from non-CDB to PDB – Various Pitfalls

In all the previous blog posts of this series I tried to explain specific pitfalls, and how you can workaround them. This article is meant to collect the “leftovers”, the minor issues and pitfalls which you may not …

Database Migration from non-CDB to PDB – The Patch Level Pitfall

Posted on August 1, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 0

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Database Migration from non-CDB to PDB – The Patch Level Pitfall

When you consolidate on a larger scale, it is very likely that you have different patch levels in your database environments. But when you attempt to plugin a non-CDB into a CDB, you may see …

Database Migration from non-CDB to PDB – The Component Pitfall

Posted on July 31, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 6

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The Component Pitfall

With component we mean the database component which you can find in DBA_REGISTRY – or CDB_REGISTRY. When Multitenant became available over 5 years ago, a decision had been made to make all options/components mandatory in a container database. This decision had to …

Database Migration from non-CDB to PDB – The Time Zone Pitfall

Posted on July 30, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 0

Photo by Allef Vinicius on Unsplash

Database Migration from non-CDB to PDB – The Time Zone Pitfall

Interestingly, there is no issue with different time zone settings within a single CDB. Your CDB$ROOT can be on DST V.32 whereas a PDB you plugin can be already on DST V.33. But only …

Database Migration from non-CDB to PDB – The COMPATIBLE pitfall

Posted on July 29, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 0

Database Migration from non-CDB to PDB - The COMPATIBLE pitfall

Database Migration from non-CDB to PDB – The COMPATIBLE pitfall

When you migrate your non-CDB to PDB, in most cases the COMPATIBLE setting of the non-CDB will be lower than the setting of the receiving CDB. But still in this case you may see warnings. I will explain how to deal with …

Database Migration from non-CDB to PDB – Typical Plugin Issues and Workarounds

Posted on July 29, 2019 by Mike.Dietrich Flaws and Pitfalls Single-/Multitenant 0

In the previous blog posts I showed different approaches on how to migrate your database on a same Endianness platform into Multitenant. Whether you prefer to upgrade first or plugin first is up to you. I recommend upgrading first as this allows you a seamless fallback. But regardless of which approach you prefer, you may take care on potential pitfalls. Hence, this blog post is about Database Migration from non-CDB to PDB – Typical Plugin Issues and Workarounds. It may not be complete when I publish it and I may extend it later on. Let me know if you have …

Database Migration from non-CDB to PDB – Clone via NON$CDB, upgrade, convert

Posted on July 25, 2019 by Mike.Dietrich Single-/Multitenant 13

The third option for plugging in a non-CDB is called Database Migration from non-CDB to PDB – Clone via NON$CDB, upgrade, convert. As I showed already in this blog post a while ago, your source must be at least an Oracle 12.1 database. And this technique can be used also only for same-Endianness migrations but does not apply if you’d like to migrate from Big to Little Endian. If your source database matches already the receiving CDB, no upgrade is necessary.

Photo by Samuel Chan on Unsplash

High Level Overview

Endianness change possible:	No
Source database versions:	Oracle 12.1.0.2

Migrate

3 Live Seminars: Upgrade and Performance Seminar 2 Questions answered

Your Questions, our Answers for Seminar 2: Upgrade and Performance

New version of Upgrade / Migrate / Consolidate to Oracle 19c uploaded

Why is there a new version?

Database Migration from non-CDB to PDB – Migration with Data Pump

High Level Overview

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

Database Migration from non-CDB to PDB – The Minimal Downtime Challenge

Database Migration from non-CDB to PDB – The Fallback Challenge

Database Migration from non-CDB to PDB – The Fallback Challenge

Database Migration from non-CDB to PDB – Various Pitfalls

Database Migration from non-CDB to PDB – Various Pitfalls

Database Migration from non-CDB to PDB – The Patch Level Pitfall

Database Migration from non-CDB to PDB – The Patch Level Pitfall

Database Migration from non-CDB to PDB – The Component Pitfall

The Component Pitfall

Database Migration from non-CDB to PDB – The Time Zone Pitfall

Database Migration from non-CDB to PDB – The Time Zone Pitfall

Database Migration from non-CDB to PDB – The COMPATIBLE pitfall

Database Migration from non-CDB to PDB – The COMPATIBLE pitfall

Database Migration from non-CDB to PDB – Typical Plugin Issues and Workarounds

Database Migration from non-CDB to PDB – Clone via NON$CDB, upgrade, convert

High Level Overview

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