Yesterday I wrote about the installation of Oracle Database 21c on Linux. But today it is time for Upgrading to Oracle Database 21c with AutoUpgrade.
AutoUpgrade
You may have heard it already from us and other colleagues, but we can’t repeat it often enough: There is only one recommended tool to upgrade your databases – and this is AutoUpgrade.
In my 21c home, I’m checking the deployed version of AutoUpgrade at first:
[CDB3] oracle@hol:/u01/app/oracle/product/21/rdbms/admin $ java -jar autoupgrade.jar -version build.hash 57ab246 build.version 21.1.3 build.date 2021/04/21 13:32:13 build.max_target_version 21 build.supported_target_versions 12.2,18,19,21 build.type production
Now please …
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This is the first of a series of blog post explaining the new AutoUpgrade utility step-by-step. You’ll find the tool and overview information in 
