Create CPF Recovery File

The CPF recovery file is used by CPF to save transmitted commands until responses to those commands are received from remote machines.
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The CPF recovery file is used by CPF to save transmitted commands until responses to those commands are received from remote machines.
If you intend to use CPF, format the CPF recovery file through TSSMAINT. The size of each record in the CPF recovery file is 4500 bytes. The block size should be a multiple of this value. One record is written to the CPF recovery file for each node to which the command is sent. The space is reused when a response to the command is received. The CPF recovery file does not support DFSMS Extended Sequential data sets (multi volume data sets).
The CPF recovery file
must never
be shared across multiple systems.
Follow these steps:
  1. Edit TSSMAINC to your site's standards.
  2. Submit TSSMAINC.
Note:
Running TSSMAINC causes an SD37 ABEND. This is normal.
A DD statement must be inserted into the CA Top Secret TSS JCL to define the CPF recovery file. For example:
//CPFFILE DD DSN=CAI.tss12.CPFRCVRY,DISP=SHR
If the CPF recovery file is not defined, command routing through CPF can still occur, but there will be no retransmission of unresponded commands.
If the recovery file becomes temporarily filled, the TSS9803W message is written to the job LOG each time CPF needs to write a message to the file. The CPF operation continues but the command cannot be recovered.