If someone try’s to run OH3 on a ZeroW he might get into the same problem. It does not run. Short answer: Java 11 was missing (first thought: should also be there with Raspbian), tried to install it (the normal way), no luck. “Solution”: Java 11 isn’t officially portet to ARM v6. After a bit of search here the real Solution how to install and use Zulu JAVA 11 on a RPi ZeroW:
and yes OH3.0.0.RC2 does work on it. Startup takes a bit but it does it’s job. And if someone is wondering: it’s just a test/backup system (preparing under Windows, testing on the zero and then rolling it out on the productive RPi3)