SCDATA operation (XRC, CC)

This operation reports the status of a session on a primary storage control. You may perform this operation regardless of whether XRC or concurrent copy is active on the system. You can only issue the MODIFY SCDATA command from a system which has the ANTAS000 address space active.

The following example is the command syntax: 
F ANTAS002,SCDATA Start of changeddddd ssEnd of change X
The following definitions apply to the syntax above:
Start of changedddddEnd of change
Specifies the address of a device that is attached to the primary storage control you want to display. The storage control must have XRC-capable Licensed Internal Code (LIC) that supports this function. Start of change Devices defined in an alternate subchannel set can be specified by coding a 5-digit device address, where the leading digit indicates the subchannel set in which the device is physically defined. If you specify fewer than 5 digits, the command is issued to the device that is currently logically in subchannel set 0. If a HyperSwap has occurred, this could be the device that was physically defined in an alternate subchannel set.End of change
ss
Specifies the storage control session number (which you can obtain by issuing a F ANTAS000,LISTSESS Start of changexxxxxEnd of change command, see LISTSESS Operation for more information).
X
Specifies that the channel extender status for a device be provided by way of the ANTX8970I message.
Result: If you specify the X parameter, the following example message displays the channel extender status for the device: 
ANTX8970I Start of change00End of changeF40 CHANNEL EXTENDER TYPE=CNT LEVEL=01 ALLOC=4000  
    BUFFER=000B0000
Result: If there is no channel extender, the following message appears: 
ANTX8970I Start of change0End of change0F40 NO CHANNEL EXTENDER

Without the X parameter, the command returns a system data mover message of number ANTX8936I.

Example: If you issue the following command to list the current status of session 01 on the primary storage control that is associated with device F40 Start of change in physical and logical subchannel set 0End of change: 
F ANTAS002,SCDATA 0F40 01
Result: An example of the output is: 
ANTX8936I Start of change0End of change0F40 - SESSION=XA01 RESIDUAL=0005 NEXTDEV=Start of change0End of change0F40 MAXSIZE=2048
                 TIME(1997.234 12:24:32.273568) TIMEOUT(00.05.00)

The following is a sample message produced by the SCDATA command:

ANTX8936I Start of change0End of change0F60 - SESSION=XA09 RESIDUAL=0000 NEXT DEV=Start of change0End of change0F60* MAXSIZE=E000 
TIME(************************) TIMEOUT(00.05.00)
Note: For a description of the ANTX8936I message, refer to z/OS MVS System Messages, Vol 1 (ABA-AOM).