Queuing Initiates

If OPTCD=NQ is specified, each Initiate request sent to the SSCP indicates sessions cannot be queued, and the Initiate succeeds only if the LU is immediately available. If OPTCD=Q is specified, then each Initiate request sent to the SSCP indicates a session can be queued if the LU is disabled or at its session limit.

When OPTCD=Q, OPTCD=QALL or QSESSLIM or QNOTENAB determines how and when requests are queued. If the Initiate request is queued and the LU is active, connected, and not inhibited for sessions as an SLU, the Initiate succeeds. If the LU is disabled as an SLU or is at its session limit, a session is queued until the LU is available. If the LU is available, a pending active session is created immediately. If OPTCD=Q is specified, an additional OPTCD is available to qualify the conditions for which the Initiate is queued within VTAM®. If OPTCD=QALL is specified, VTAM indicates in the Initiate that the SSCP can queue the request if the LU is at session limit or is not enabled. If, however, queuing is desired in only one of these cases, OPTCD=QSESSLIM (LU at session limit) or OPTCD=QNOTENAB (LU is not enabled) can be coded. In each case, the Initiate request sent to the SSCP indicates the appropriate queuing conditions.