Important! Make sure that the server name (the name of the PC) where you're going to install the server doesn't contain the "_" symbols. If it contains, please rename the PC.
The database installation
Download the database. (create an account if you haven't done it before)
https://www.oracle.com/technetwork/database/enterprise-edition/download…
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Unzip 2 archives and merge them (copy the data from the second folder to the first one).
Run setup.exe. Agree to on the warning that the system doesn't match requirements.
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Remember the CID
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Check the installation and make sure that the oracle server works.
Win+R -> cmd ->
sqlplus "/as sysdba"
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->
select * from dual
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download oracle developer
https://www.oracle.com/technetwork/developer-tools/sql-developer/downlo…
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run sqldeveloper.exe
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Use the CID
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OPTIONAL
installing dbforge for oracle
download dbforge for oracle and install it. Just next-next-next.
connect to the database
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The database has been installed.