My test worksapce on apex.oracle.com schema list is empty, as above.
Application Express
Details
| Product Build | 5.1.2.00.09 |
| Schema Compatibility | 2016.08.24 |
| Last DDL Time | 06/17/2017 04:47:28 AM |
| Host Schema | APEX_PUBLIC_USER |
| Application Owner | APEX_050100 |
| Workspace ID | 18381668502754060434 |
| Workspace Name | SCOTTWAN |
| Current User | SCOTTWAN@FOXMAIL.COM |
| Language Preference | en |
| Current Time (on server) | 07/12/2017 01:01:25 AM +00:00 |
CGI Environment
| APEX_LISTENER_VERSION | 3.0.9.348.07.16 |
| PLSQL_GATEWAY | WebDb |
| GATEWAY_IVERSION | 3 |
| SERVER_SOFTWARE | Mod-Apex |
| GATEWAY_INTERFACE | CGI/1.1 |
| SERVER_PORT | 443 |
| SERVER_NAME | apex.oracle.com |
| REQUEST_METHOD | GET |
| QUERY_STRING | p=4350:9:16318974084897:::::&p_dialog_cs=gPmeT7-f0h4YFMVLl06iV25MmCAwWUMFqmwbW_qAUA2tXvfyJuE73irTjdUNyQG0tdQsZfqJgqW82mDW2Ua-fw |
| PATH_INFO | /f |
| SCRIPT_NAME | /pls/apex |
| REMOTE_ADDR | 141.146.114.42 |
| SERVER_PROTOCOL | HTTP/1.1 |
| REQUEST_PROTOCOL | https |
| REMOTE_USER | APEX_PUBLIC_USER |
| HTTP_USER_AGENT | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0 |
| HTTP_HOST | apex.oracle.com |
| HTTP_ACCEPT_ENCODING | gzip, deflate |
| HTTP_ACCEPT_LANGUAGE | zh-CN,en-US;q=0.8,zh;q=0.5,en;q=0.3 |
| HTTP_ORACLE_ECID | |
| WEB_AUTHENT_PREFIX | |
| DAD_NAME | |
| DOC_ACCESS_PATH | |
| DOCUMENT_TABLE | |
| PATH_ALIAS | |
| REQUEST_CHARSET | AL32UTF8 |
| REQUEST_IANA_CHARSET | UTF-8 |
| SCRIPT_PREFIX | |
Database Version
| Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production |
| CORE 12.1.0.2.0 Production |
| NLSRTL Version 12.1.0.2.0 - Production |
| PL/SQL Release 12.1.0.2.0 - Production |
| TNS for Linux: Version 12.1.0.2.0 - Production |
Character Set
| NLS_CHARACTERSET: | AL32UTF8 |
| DAD CHARACTERSET: | UTF-8 |
| JOB_QUEUE_PROCESSES: | 30 |