slackbuilds_ponce/development/sqlcl

Oracle SQL Developer Command Line

Oracle SQL Developer Command Line (SQLcl) is a free command line interface for
Oracle Database. It allows you to interactively or batch execute SQL and PL/SQL.
SQLcl provides in-line editing, statement completion, and command recall for a
feature-rich experience,  all while also supporting your previously written
SQL*Plus scripts.

You need an Oracle account and you must Agree to Oracle's download
agreement before this can be downloaded.
You have to use a web browser to download it.