Establishing and terminating sessions with operator commands

A session is usually established by an LU requesting session establishment. However, you can establish a particular session or set of sessions using the VARY LOGON command, or you can establish a single session between a user and an application program using the LOGON operand of the VARY ACT command. If the logical unit you are activating is defined with a LOGAPPL on its LU definition statement, you can establish a session without using the LOGON operand.

A session is usually terminated by one of the session partners requesting termination. However, you can terminate a particular session or set of sessions without deactivating either of the session partners using the VARY TERM command. You can also terminate a session using the VARY INACT command for one of the logical units participating in the session. This command with a TYPE=IMMED or TYPE=FORCE operand breaks any sessions with the logical unit. (Note that TYPE=IMMED has the same effect as TYPE=UNCOND.)

Note: For cross-network sessions, when any SSCP-SSCP session along a cross-network session path of an LU-LU session is disrupted, the only termination requests that can be handled are those that are forced, such as VARY INACT with the FORCE operand or VARY TERM with the FORCE operand.