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SETUP_ORACLE.md

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Prerequisites on Fedora 35+

Install Oracle Instant Client

Go to the official Oracle Instant Client Downloads site and install basic and SDK RPMs like this:

sudo dnf install https://download.oracle.com/otn_software/linux/instantclient/1918000/oracle-instantclient19.18-basic-19.18.0.0.0-2.x86_64.rpm https://download.oracle.com/otn_software/linux/instantclient/1918000/oracle-instantclient19.18-devel-19.18.0.0.0-2.x86_64.rpm

If you wish, you can also install SQLPLus client from same location as well.

Setup Podman with user namespaces

On recent Fedora versions, new users already have that setup.

dnf install -y podman-docker
sudoedit /etc/subuid # add line: myusername:10000:54321
sudoedit /etc/subgid # add line: myusername:10000:54330

Prerequisites on other Linux and probably MAC

Install Oracle Instant Client using the script

  1. Run the script with sudo
$ sudo ./script/oracle/install-instantclient-packages.sh
  1. Add following ENV variables to your system (~/.profile or ~/.zshrc)
LD_LIBRARY_PATH="/opt/oracle/instantclient/:$LD_LIBRARY_PATH"
ORACLE_HOME=/opt/oracle/instantclient/

Install Oracle Instant Client via RPM

  1. Go to the official Oracle Instant Client Downloads site and download the following .rpm packages for your operative system:
  • Basic
  • SQL Plus
  • SDK

On Fedora or a Red Hat based distro, you can just install the RPMs. Instructions for Debian based systems follow.

  1. Create a folder in /opt/oracle if it does not exist yet (with mkdir -p /opt/oracle) and save these packages there.

  2. Install the dependency libaio1 and the package alien. In Ubuntu that is done with sudo apt-get install libaio1 alien.

  3. Go to /opt/oracle through the terminal (with cd /opt/oracle) and use alien to convert all those .rpm packages to .deb (with sudo alien --to-deb --scripts *.rpm).

  4. Execute all those .deb packages with sudo dpkg -i *.deb.

  5. Execute the following lines and also add them at the end of ~/.profile. Replace 'X' for the version of the package that you have just installed.

export ORACLE_HOME=/usr/lib/oracle/X/client64
export PATH=$PATH:$ORACLE_HOME/bin
export OCI_LIB_DIR=$ORACLE_HOME/lib
export OCI_INC_DIR=/usr/include/oracle/X/client64

Setup Docker (but preferably use podman)

You need to have Docker installed and running. You also need to be able to run containers as a non-root user.

Run Oracle server

  1. From this repository, do make oracle-database and wait a little, or check podman logs -f oracle-database to see DATABASE IS READY TO USE! message.

    • This will create an Oracle database container that has a "rails" user to use for development purposes.

    • If you run oracle in another way, then you can create a development user manually like this:

      docker exec -it oracle-database sqlplus system/[email protected]:1521/systempdb

      CREATE USER rails IDENTIFIED BY railspass;
GRANT unlimited tablespace TO rails;
GRANT create session TO rails;
GRANT create table TO rails;
GRANT create view TO rails;
GRANT create sequence TO rails;
GRANT create trigger TO rails;
GRANT create procedure TO rails;

  2. Finally initialize the database with some seed data by running (omit ORACLE_SYSTEM_PASSWORD if you have already granted the necessary permissions to the user)

    DATABASE_URL="oracle-enhanced://rails:[email protected]:1521/systempdb" ORACLE_SYSTEM_PASSWORD=threescalepass NLS_LANG=AMERICAN_AMERICA.UTF8 USER_PASSWORD=123456 MASTER_PASSWORD=123456 MASTER_ACCESS_TOKEN=token bundle exec rake db:drop db:create db:setup

Troubleshooting

ORA-12637: Packet receive failed

Add DISABLE_OOB=ON to sqlnet.ora (github issue). For installation from archive that would be

echo "DISABLE_OOB=ON" >> /opt/oracle/instantclient/network/admin/sqlnet.ora

For RPM installation (update version 21 with whatever you installed locally).

echo "DISABLE_OOB=ON" >> /usr/lib/oracle/21/client64/lib/network/admin/sqlnet.ora

For IntelliJ/RubyMine, go to Database -> Database Source properties -> Drivers -> Oracle -> Advanced -> oracle.net.disableOob -> true