As you may know, Oracle Database 19c is available for new (X8-2) or older Oracle Database Appliances since several weeks. Current version is 19.5. But when you go to the official ODA documentation , it still first proposes version 18.7 not compatible with 19c databases. Here is why.
First of all, 19c is an important release because it’s the terminal release of the 12.2, as 11.2.0.4 was for 11.2. Please refer to my other blog to understand the new Oracle versioning. ODA always supports new releases few months after being available on Linux, and it’s why it’s only available now.
19.5 is available on your ODA, but you will not be able to patch to this version. Reason is quite simple, it’s not a complete patch, you can only download ISO for reimaging and 19c grid and database software and that’s it. The reason for not yet having a patch resides in the difficulty of updating the OS part. 19.5 runs on Linux 7.7, and all previous releases are stuck with Linux 6.10, meaning that the patch should include the OS upgrade, and this jump is not so easy. It’s the first drawback.
Second drawback is that you cannot run another database version. If you still need 18c, 12.2, 12.1 or 11.2, this 19.5 is not for you.
The third drawback is that you will not be able to patch from 19.5 to 19.6 or newer version. Simply because 19.5 is an out of the way release.
Another drawback concerns the documentation not yet complete: many parts are copy/paste from 18.7. For example, described initcl command to restart the dcs agent is not a command that actually exists on Linux 7.
Moreover, my first tests on this version show annoying bugs related to database creation, those under investigation by Oracle.
19.6 is planned for 2020, yes but which month? There is no official date, it could come in march, or during the summer, nobody knows. As a result, you will have to wait for this patch to be released to start your migration to 19c on ODA.
3 solutions are possible:
Not having 19.6 now is really annoying. Afterall we choose ODA because it’s easier to get updates. But you can still prepare everything for 19c migration, by first migrate to 18c or give a try to 19c with this 19.5 release.
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