SNA Server Selects Bad Dependent APPC LU from Default Pool (259149)

SYMPTOMS

If multiple dependent local APPC LUs are configured with the Member of default outgoing local APPC LU pool check box enabled, and an APPC or CPIC application specifies a blank Local LU alias when it attempts to allocate a conversation to a Remote APPC LU, the SNA Server computer may fail to locate an available local LU and reject the Allocate request. When this occurs, the SNA Server computer selects a local LU that is already being used, instead of choosing an available local APPC LU in the pool.

If this occurs with an APPC application, the [MC_]ALLOCATE fails with the following error message: A CPIC application fails with the following error message: This problem can occur when the dependent local APPC LU pool is used to access a single Remote APPC LU, or multiple Remote APPC LUs.

NOTE: There are other causes for these failures other that this specific problem. For example, if the host rejects the INITSELF request to activate a session, or there is a problem with the connection, these error messages may also occur.

Also, when the Default pool check box is selected on a local APPC LU, the LU may be used to access any remote APPC LU if a blank local LU alias is provided by the APPC application. Therefore, the remote APPC LU (on the remote system) must be enabled to support sessions from any pooled local APPC LU.