I saw a couple of unrelated but short questions this week, so I thought I'd answer them both.
"I tried to edit the credentials used by the Enterprise Controller to access My Oracle Support, but when I open the credentials window, the password field was blank, even though there should be an existing password. What's going on?"
So, naturally, once you've entered a password, we don't want to send that password back to the UI, because it'd be a security risk. In 12.3, though, the asterisks to indicate an existing password aren't showing up. So, your credentials are still there, and they won't be changed unless you specifically enter new credentials and save them.
"I was trying to make sure that file system monitoring was working correctly on a managed system. I made a file to push utilization up past the 90% threshold, which should've generated an incident. However, the incident didn't show up for almost an hour. Why is there a delay?"
You can edit the Alert Monitoring Rule Parameters in Ops Center. However, the thresholds that you set have to be maintained for a certain amount of time before an alert is generated. For a file system utilization alert, the default value for this delay is 45 minutes. You can edit the alert to change this threshold if needed.