I have a 3 node cluster with 3 named instances installed and today I accidentally set the maximum memory on one of them to 300M instead of 300G!
My objective is to change the memory settings back however the SQL service would not start.
I have added the -f and -m startup parameters which allows SQL to start however I cannot get connected and repeatedly get the error Login failed due to single user mode.
Adding the startup parameter -m"SQLCMD"; and running sqlcmd -S computername\instance name is still giving me the error relating to single user mode.
The service is running as a domain service account and I am logged in to the server as that same service account.
Can anyone tell me what is preventing me from gaining the connection from CMD in single user mode? Is the cluster service taking the connection?