Issuing a session command takes 10 minutes to complete or fails continuously

Action

Check the connections to your hardware. There might be a fault somewhere between Copy Services Manager and the z/OS®, HMC, or direct connections. Copy Services Manager might take up to ten minutes to reply that the connection has been lost. The commands and queries will fail during this time frame.

If you manage by using both TCP/IP and z/OS connections, you can avoid this type of disruption by enabling the Metro Mirror heartbeat function, which causes Metro Mirror sessions to automatically suspend after the heartbeat time-out period defined on the hardware.