Install SQLcl

1. (Optional) Install SQLcl

   If you do not already have a database client, Oracle SQL Developer Command Line (SQLcl) is a free command line interface for Oracle Database which includes great features like auto-completion and command history. All the Labs are using SQLcl as the database client.

   If you choose to use SQLcl make sure it is in your PATH variable:

   export PATH=/path/to/sqlcl:$PATH