SFTP Reciever Channel Error.

Hi Experts,

My Scenario is File - SFTP.

At first the Reciever(SFTP) channels are okay in RWB while CCmonitoring. But once I start transferring the file it gets into an error.

Also , I can see the file being transferred but at a slow rate. Instead of minutes it takes hours.

I get an error stating. -

JCA adapter. Reason: com.jcraft.jsch.JSchException: channel is not opened.

and

Transmitting the message to endpoint <local> using connection

File_http://sap.com/xi/XI/System failed, due to:

com.sap.engine.interfaces.messaging.api.exception.MessagingException:

javax.resource.ResourceException: 4:

Please Suggest.

Regards,

Rama.