Returning ownership

When the original resource owner is restarted, the backup host can release ownership of the resources using the GIVEBACK operand on the VARY INACT or VARY REL operator command. The original owning host can then resume ownership of the resources using the VARY ACT or VARY ACQ operator command. The operations of assuming ownership in the backup host, releasing ownership of the resources in the backup host, and resuming ownership of the resources in the restarted original host are all nondisruptive to the following session types:

Nonswitched SDLC connections
Switched SDLC connections
Token-ring connections
X.25 connections using permanent or switched virtual circuits
T2.1 channel connections to APPN nodes
Frame Relay connections

However, each of the devices attached using these connections must be capable of supporting the activation recovery.

Note: If you specify the DELAY option on the ANS operand in NCP, the disruption of binary synchronous (BSC) sessions can be delayed when the original host fails. However, the activation of the BSC resources by the backup host results in the disruption of these sessions.