[Frankys-MacBook-Pro:~ franky$] /Users/franky/Downloads/sqlcl/sqlcl/bin/sql /nolog

SQLcl: Release 19.4 Production on Mon Feb 8 19:51:21 2020

Copyright (c) 1982, 2020, Oracle.  All rights reserved.

SQL> set cloudconfig /Users/franky/Downloads/Wallet_TESTDB.zip
Operation is successfully completed.
Operation is successfully completed.
Using temp directory:/var/folders/1h/mwvhtfsn48gc06mh8yp9lgfh183jkar/T/oracle_cloud_config706624827909182374
SQL> connect admin@testdb_high
Password? (**********?) *****************
Connected.
SQL> select banner_full from v$version;
BANNER_FULL
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Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production
Version 18.4.0.0.0