The Batch Interface › SYSIN01 Parameters › General SYSIN01 Parameters › GROUP

GROUP

Tells CA XCOM Data Transport to use the “pooled” LU feature to allow for multi‑threading of transfers to nodes that support multiple logical units but not parallel sessions. For TCP/IP transfers, use GROUP to specify an alias.

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Specifies the name of a group of LUs defined in the CA XCOM Data Transport control library (CAI.CBXGPARM). The name can contain up to eight characters. The first character must be alphabetic, while the rest can be any combination of alphanumeric or national characters.

Notes:

• GROUP, LIST, USER, and LU are mutually exclusive parameters. Only one of them can be coded.
• When GROUP= or LIST= is used, the value for IPPORT is determined by either the destination member or the default table.
• The group must be predefined in the CA XCOM Data Transport control library (CAI.CBXGPARM). When the transfer process begins, CA XCOM Data Transport tries transferring to the first LU in the group. If that attempt fails, the second LU is tried. If that transfer attempt fails, the third LU is tried, and so on. However, as soon as CA XCOM Data Transport finds an LU that is available for the partner node, it transfers the data to that LU and stops making any further transfer attempts.
• Group processing is supported for TCP/IP transfers but only for a single IP address. In this way, an alias can be defined within CA XCOM Data Transport for an IP address.
• Session establishment is subject to a time‑out limit defined on the TIMEOUT parameter. See the description of TIMEOUT later in this section.
• You can use symbolic variables with this parameter in batch SYSIN01. For more information, see Symbolic Parameters.