when I try to create a new administration account.
I run the SQL Command Line
I type connect
I Enter user-name: system
I Enter password:
It gives me this message
ORA-01034: ORACLE NOT available
ORA-27101: shared memory realm does not exist
Process ID: 0
Session ID: 0 Serial number: 0
Welcome to the forums - pl post your exact database and OS versions.
The error message indicates that your database is down. To bring it up, use these commands
sqlplus / as sysdba
Once the database is up, you should be able to connect and execute the commands you need