The error of your question will be a generic error of java.

 

When an application tries to use the connection, it occurs when the connection is in a state that cannot be used.

 

 

The reason for not being able to use the connection may be that the connection destination, the OS, the network, etc. to which the application is connected has been disconnected, or it has been disconnected unintentionally due to a communication failure or such.

 

 

This error may occur if the adapter communicates with the outside. In the past case, it occurred in the FTP adapter, an adapter that connects to RDB.

 

■Checkpoint

Please check the communication connection destination, the OS, and the network environment, and identify the location where the connection was disconnected when the error occurred.

 

For example, these are the following factors:

If an exception always occurs at a specific connection destination, the connection destination may have disconnected before the communication is completed.

If the error occurs only after a certain amount of time has passed, the connection may have been disconnected after a certain amount of time has elapsed due to the network environment settings.

If there is variation in the error frequency with the same settings, it is possible that an error has occurred because of the unstable communication environment.

 

 

From the exception that has occurred, you can confirm that the connection cannot be used. However, the cause of the connection becoming unavailable cannot be checked from the exception because multiple factors can be assumed.

For this reason, you will need to check from the connection destination or the environmental factors.

 

 

Reference information

 

java.io.IOException: An existing connection has been forcibly disconnected by the remote host.

is not a product-specific error but a general-purpose error of java, which can be found on the WEB as follows.