ASM

Does your GI RU/RUR patch level has to match your database’s?

A long while ago I blogged about whether you should keep your patch versions between Grid Infrastructure and Databases Homes in synch, or not. And today, Daniel dropped me a note mentioning that this old blog post may need an update for 18c/19c. He’s right. And as I’ve had trouble finding my old blog post, I title this one a bit more obvious: Does your GI RU/RUR patch level has to match your database’s?

Does your GI RU/RUR patch level has to match your database's?

Photo by Vincent van Zalinge on Unsplash

Before Oracle Database 18c

Since Oracle 18c we move from a 5-number release schema to a 3-number one. …

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Do you need to apply OJVM patches to Grid Infrastructure?

From time to time, when I discuss OJVM patching with customers, I hear the following question: Do you need to apply OJVM patches to Grid Infrastructure? I’m carrying around this topic since months actually.

Do you need to apply OJVM patches to Grid Infrastructure?

Photo by Jakub Kriz on Unsplash

A quick MOS check

Well, you’d assume this is something MOS does give you an answer within fractions of a second. But nope. I found a lot but unfortunately not what I was looking for. What I found instead where community discussions where applying OJVM patches to a 12.1.0.2 GI installation corrupted the inventory. Hence, there seems to be some …

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AutoUpgrade and Data Guard, RAC, Restart and non-CDB to PDB

I need to bring this blog post forward about AutoUpgrade and Data Guard, RAC, Restart and non-CDB to PDB. Initially I planned to write this a bit later. But some of you had questions or were wondering why AutoUpgrade hasn’t done certain tasks. Hence, I’d like to clarify what AutoUpgrade can do, what it can’t and what you’ll have to do at the moment.

I refer to the AutoUpgrade tool as of July 2019. In later versions, one or the other restriction may be lifted. I will blog about it then as well.

AutoUpgrade and Data Guard, RAC, Restart and non-CDB to PDB

AutoUpgrade – Step-by-step

  1. The new AutoUpgrade
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More than one PDB in the same directory?

Can you create more than one pluggable database (PDB) within the same directory?
And how does the file naming work? Considering the fact each PDB’s SYSTEM tablespace will be named system01.dbf by default the question is not trivial.

This question got asked by a customer during one of the workshops in Switzerland last week. And the solution is straight forward. Thanks to Roy for trying it out yesterday at 170 km/h on our way back from Stuttgart 🙂

Thanks 🙂

-Mike

Additional information:

Within ASM with OMF the file structure looks like this:

select con_id, substr(file_name,1,90),tablespace_name from cdb_data_files order by 
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Creating ASM for test purposes in the file system

First of all, I’m back after pausing for a while – sorry for not updating the blog in the past weeks … and you won’t see many updates in the following weeks as it’ll be holiday season (and we Germans have sooooo many public holidays) 🙂

Anyway, back to tech topics. Today I want to test Oracle Restart upgrades. Oracle Restart internally is called SIHA (Single Instance High Availability) which explains the topic a bit more. Basically it means having your database reside in ASM and let Oracle Clusterware take care on it, even though you don’t have a cluster. …

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