I had my database working properly but I had an issue and when I tried to repair it I executed the following command
alter tablespace system add datafile '/var/oracle/oradata/data.dbf' size 10000m autoextend on maxsize unlimited;
Then I noticed that the command didn't resolve my problem then I deleted the file
data.dbf... But the problem that I'm having right now is that when I'm trying to restart my database it doesn't run.
I looked and didn't find how to fix the problem. Can someone help me? Any help please... I'm down