Windows - Cannot remove empty file

Encountered a weird one, today. Unfortunately, I did not get screen-shots.
When trying to delete a folder, I got a message that I could not because a sub-folder was open in another program.
Tried from command line, and it said that the folder was not empty.

Hmmm. That's odd ;-)

So I went folder by folder up the chain and found one that was marked as read-only.  I changed that setting, and was able to delete my folders.

Hope this help someone. Sorry for the lack of screen-shots.

ERROR: ORA-01033: ORACLE initialization or shutdown in progress

I recently ran across this error, which led me to this article in DBForums.
Unfortunately, it's been a while and I can't figure out my login, so I'm posting this here.

In my case, it was very definitely a user error :(
This was Oracle 12c, local development database on my laptop.
Because of space constraints, I had moved the USER tablespace to an external drive, and then forgot about it!

Oracle very happily started up and gave no visible objection, but when I tried to connect, it have this message.

So, long story short, if you get this, check that you can connect to all of your Oracle data files!

Happy databasing ;-)