Explanation: A request cannot be sent to vmd or to oprd, even though the initial connection to the server process was successful. (vmd is the NetBackup Volume Manager daemon on UNIX and Linux or NetBackup Volume Manager service on Windows; oprd is the operator request daemon or process.)
Examine command output, debug logs, and system logs for a more detailed message on the error.
Check to see whether the vmd or the oprd process continues to run once it receives the connection from the requestor. Run netstat -a or an equivalent socket diagnostic utility. Check the following to see if the server process is hung up: the daemon debug log on the server-side system and the process status of vmd or oprd.