There is a note in the documentation that you “… can never alter :db/valueType …” so what are the options?

If the attribute is unused I could “rename” it and redefine the attribute.

Yes, I think that's the only option.

Hi, on the same issue, do you know whether datomic ions will be able to run on something higher than Java 8 soon? 😬

Hi @U3ZG4CAF8, in 2021/07/13, version 884-9095, the computer nodes have been upgraded to Java 11. See https://docs.datomic.com/cloud/changes.html#884-9095 for more details.

Hi Felipe, oh interesting 😳 I started development 3 months ago on a new cloud setup and my ions became Java 8 runtimes.

Version is/was 973-9132

I was not expecting that. Please, could you open a support ticket through https://support.cognitect.com/hc/en-us/requests/new with the steps you followed and the version you are using, as you mentioned? Then we can go deeper into the investigation to help you