Remote SQL Pass-Through (RSPT) Facility

DISCONNECT FROM Statement

Closes the connection to the server.

DISCONNECT FROM server;

server

specifies which server to disconnect from. Here are the valid values for server:

REMOTE: the server that is specified in the most recent CONNECT TO REMOTE statement will be used.
alias: the server that you assigned the alias to (in the AS=alias option in the CONNECT TO REMOTE statement) will be used. Specifying alias is useful if you are connected to several SQL servers at the same time.