Okay, so I had an issue with Powershell / Task Scheduler that I posted on SO an hour ago, and one of the answer I got suggested to check my permissions.
(for the record, I'm on a corporate Windows 7 machine)
So in the Start Menu, I opened "Give administrative rights to a domain user". I then found out my user account on the CORP domain was in the group ORA_DBA, which will have been added after I installed Oracle Database. So I thought, well okay, I'm not an administrator, better fix that. I then double clicked on my user account, and changed the checkbox to "Administrator", which was perfectly fine, I logged out, logged in, et voila, no problems. Then for some reason I thought it would be a good idea to go back to the same window and change the group of my user account back to the ORA_DBA group, logged out, logged in, and then the trouble began. Where before I (think I) had some administrative rights, now nothing that requires an administrator works anymore.
For instance, I cannot add or change tasks in the task scheduler, I then get the error message:
Task Scheduler cannot apply your changes. The user account ... does not have permission to modify the task.
Also, when I go back to the user accounts window and try to change my group yet again to administrators, I get:
`The user could not be added because the following error has occured: Access denied.``
So, I think I messed things up, doing things I am not 100% sure of what I am actually doing.
I figured I would then try to inspect my restore points and roll back to a previous one. But, when I go to
Control Panel > Recovery, and I click on
Open System Restore, nothing happens, because I guess you need some administrative rights for this. Looking a bit further, I figured I have no way to roll back a previous restore point.
My question now consists of two parts. 1. Have I actually messed up by switching back and forth between Administrator and ORA_DBA, or could this not have been the case, and what exactly did I do wrong, and 2. can I still fix this in a way (or at least get control over Task Scheduler again)? This all keeping in mind I'm on a corporate laptop I do not have full control over.