
After login as oracle user, set the environment and start sqlplus I stuck in step:
Enter user-name: sys as sysdba
Enter password:
What password must I enter? I didn't create anything when I installed Vision database. If I entered any password such as sys, apps, etc I got the message :
Connected to an idle instance
then if I tried the next step, which is check if database is in which status, by execute :
SQL> select Log_Mode from Sys.v$database;
I got error message like this :
ERROR at line 1:
ORA-01034: Oracle not available
How do I solve all that problems? Thanks for the answer