421 Service Not Available, Remote Server Has Closed Connection Error in Oracle API Gateway FTP Processing

(Doc ID 2326219.1)

Last updated on NOVEMBER 08, 2017

Applies to:

Oracle API Gateway - Version 11.1.2 and later
Information in this document applies to any platform.

Symptoms

Using Oracle API Gateway to host FTP, SFTP and FTPS listeners.

The below error is observed while connecting to these listeners using an OAG user:

$ ftp xxx.xxx.xxx.xxx
Connected to xxx.xxx.xxx.xxx (xxx.xxx.xxx.xxx).
220 Service ready for new user.
Name (xxx.xxx.xxx.xxx:oaginstall): myuser
331 User name okay, need password for myuser.
Password:
421 Service not available, remote server has closed connection
Login failed.
No control connection for command: Success
ftp>

 

Cause

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