Oracle Database is not starting

Question

I have a problem with running Oracle database. I've installed Oracle Database 18c Express Edition and it's not working.

There is ORA-12560: TNS:protocol adapter error when I use sqlplus / as sysdba

I tried running it by windows service ( error like that ) and also using lsnrctl services commend ( error like that ).

Answer 1

Your database is not up and running.

Just goto command prompt and follow the steps

1. Set Oracle SID C:>set oracle_sid=ORCL

2. run Net start command. C:>net start oracleserviceORCL