I need your help.
I've installed oracle 10g r2 database and apply patch 10.2.0.3
Than created database.
And I've managed to use dbconsole so everything was working (earlier i configured listener and tns)
Than I wanted to shutdown database and all services.
After that I started listener:
conn sys/ as sysdba
ORA-12560: TNS: protocol adapter error occurred
And I cannot connect to idle instance.
Why? and how to fix that?
I was looking for solution and I also looked for my listener.ora and tnsnames.ora files to check if there is a difference with my working database but there is not.