I tried to upgrade to 10.1 on new hardware yesterday. We have a firewall infant of the MTPs running the TIM software so we couldn't completely upgrade so we backed out
One of the things we tried was installing a v10.1 collector on the same server as our old 9.5 standalone systems, but it didn't work so we shut it down
After starting the 9.5 standalone system we have an issue with the TIM collection service just doesn't come up, if we try stop it is says it can't start/stop the service as It is in In Progress state.
Try the following tec doc
This issue should happen less with later releases
If Mike's suggested KB does not resolve the problem you might have to drop all rows in the ts_entity table e.g. see this previous thread: https://communities.ca.com/message/241816947#241816947
I believe both solutions would have solved my issue,
I opted for a blackout to previous db.
Before I started the change, I shutdown the EM and backed up the DB
I restored the previous days DB to another instance and then update config/tess-db-cfg.xml and the restarted EM
You are correct, I restored this exact same DB instance to v10.1 and it didn't blink.