Heroku buildpack for setting up Oracle Instant Client and the LD_LIBRARY_PATH so that Bundler can build ruby-oci8

In order for this buildpack to execute, it will look for a .oracle.yml file in your app's root. The file can be empty but it must exist.

touch .oracle.yml

You'll need to use multiple buildpacks. This buildpack will need to be invoked first, followed by heroku-buildpack-ruby. Heroku now supports configuring multiple buildpacks natively, or you can use the heroku-buildpack-multi buildpack.

The benefit to using heroku-buildpack-multi is that you can version-control your environment changes.

heroku buildpacks:clear
heroku buildpacks:set https://github.com/ddollar/heroku-buildpack-multi

Then inside .buildpacks, add the following contents:

https://github.com/wealthsimple/oracle-heroku-buildpack
https://github.com/heroku/heroku-buildpack-ruby

Heroku natively also support's multiple buildpacks, the same setup as above can be achieved as follows:

heroku buildpacks:clear
heroku buildpacks:set https://github.com/heroku/heroku-buildpack-ruby
heroku buildpacks:add --index 1 https://github.com/ddollar/heroku-buildpack-multi

It is sometimes desirable to use tnsnames.ora or sqlnet.ora to configure how Oracle connects to a database or to use sqlnet.ora to configure connection wallets.

The tnsnames.ora and sqlnet.ora files are often located in $ORACLE_HOME/network/admin. This buildpack will correctly setup $ORACLE_HOME and $TNS_ADMIN to point to $ORACLE_HOME/network/admin. A location for tnsnames.ora or sqlnet.ora can be configured inside the .oracle.yml file:

cat .oracle.yml
---
tnsnames.ora: config/tnsnames.ora
sqlnet.ora: config/sqlnet.ora

The files will be symlinked into vendor/oracle-instantclient/network/admin

You do not need both tnsnames.ora and sqlnet.ora, they are both optional, the buildpack and ruby-oci8 will work fine without them.