... part of the SQL Developer suite
http://www.oracle.com/technetwork/developer-tools/sqlcl/overview/index.html
http://www.oracle.com/technetwork/developer-tools/sqlcl/downloads/sqlcl-relnotes-174-4126387.html
http://www.oracle.com/technetwork/developer-tools/sqlcl/downloads/sqlcl-faq-3014678.html
http://download.oracle.com/otn/java/sqldeveloper/sqlcl-17.4.0.354.2224-no-jre.zip
https://community.oracle.com/community/database/developer-tools/sql_developer/sqlcl
https://docs.oracle.com/en/cloud/paas/exadata-express-cloud/csdbp/developing-oracle-sqlcl.html

part of the SQL Developer suite
https://docs.oracle.com/database/sql-developer-4.2/SQCQR/toc.htm

resources
http://krisrice.blogspot.com.by/

2017
Smith - Oracle SQLcl Demonstration 
https://www.youtube.com/watch?v=ecgijS76jvw

2016
Elkayam - Is SQLcl the Next Generation of SQL*Plus?
https://www.slideshare.net/zohare/is-sqlcl-the-next-generation-of-sqlplus
Smith - Oracle SQLcl Introduction and Getting Started
https://www.youtube.com/watch?v=b-iHX2EA77w
McGillin - Oracle SQLcl
https://www.slideshare.net/barrymcgillin/oracle-sqlcl

aur
    sqlcl
https://aur.archlinux.org/packages/sqlcl/
https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=sqlcl
...
==> sqlcl dependencies:
 - java-runtime>=8 (building from AUR)

sqlplus
    <username>/<pwd>@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=<host>)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=<orcl>)))
    system/oracle@//localhost:1521/EE.oracle.docker

connect
    host:port/service   # support TNS, Thick and LDAP connection
editint
https://github.com/oracle/oracle-db-tools/blob/master/sqlcl/EDIT.md
ed
    <script-name>[.ext]
        edit a script-name (default ext is sql)
    ececute sql from buffer
@
    <script-name>[.ext]|<url> [arg...]
        run a script
@@
    {url|file_name[.ext]} [arg ...]
        ??? + nested script ???
/, r[un]
    execute the most recent command
script
    <script-name>
        if no .ext specified, use .js
script
2  ctx.write("Hello world!\n");
3  /

desc[ribe]
    <schema>.<table>    # schema is reuqired
info[rmation]
    [schema.]<table|view|seq|code-obj>
    info+ - statistics
sho[w]
    all[+]
    err[ors]
    user
    sqlpath|cd
    java|jdbc
    release|version
    connection|user|tns
    encoding|encodings
    sqlformat|long|longchunksize|linesize|pagesize|newpage|headsep|heading|concat|colsep|wrap
    serveroutput
    history
    autocommit|exitcommit
    autoprint|autotrace
    parameter
        java_pool_size|shared_pool_size
        java_jit
            alter system set java_jit_enabled=false;
    defines
        en

set
    sqlformat <default|ansiconsole|loader|fixed|insert|csv|html|json>
    sqlp[rompt]
    nohistory
        blacklist: show,history,connect,set
    clear bottom
    <term|feedback|serveroutput> on|off
    -- to remove a header
    head off
    und off
    -- ???
    pages 0; 
    feedback off;

col[umn]
    <name> format
        A10
        $9,999,999

his[tory]
    <number>|usage|time|script|full|clear [session?]

repeat
    like cron-job

alter table <schema>.<table>
    drop column <column>;

oerr
    ora-0

alias
    list
    locks|sessions|tables|tables2

keys
    C-W, C-S
        jump to start/end of buffer
    C-A, C-E
        jump to start/end of line
    C-R
        run buffer immediately
    C-L
        clear screen

script
    https://github.com/oracle/oracle-db-tools/blob/master/sqlcl/examples/

login
    https://community.oracle.com/thread/3925910
    login.sql

files
    .sqlcl/

samples
https://github.com/oracle/oracle-db-tools/tree/master/sqlcl

uses
    jline 2.12.1
    com.jcraft:jsch:0.1.51