hi everyone need some help for the instance eviction
C:\Users\Administrator>
C:\Users\Administrator>sqlplus / as sysdba
SQL*Plus: Release 19.0.0.0.0 - Production on Wed Dec 27 13:07:13 2023
Version 19.20.0.0.0
Copyright (c) 1982, 2022, Oracle. All rights reserved.
Connected to an idle instance.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01034: ORACLE not available
Process ID: 0
Session ID: 0 Serial number: 0