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oracle 12c, install samples hr etc
Answers
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post results from 2 OS commands below
lsnrctl status
lsnrctl service
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What difficulties?
Why do you need to restart your database?
You added the PDB to your TNSNAMES.ORA file so if you have opened the PDB you should be able to connect.
Can you now connect or now?
Post a copy of your sql*plus session showing the command you and using and the results you get.
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I am sorry, I made an error when renaming file tnsname.ora source of trouble. Now I connect both with sqlplus and with Oracle Sql Developper to database HR. I hope it will be the same with jDevelopper. I thank everyone for all.
This discussion has been closed.