Testing for a successful checkpoint
After each input or output statement that issues a checkpoint,
the RETURN-CODE special register is updated with
the return code from the checkpoint routine. Therefore, you can test
whether the checkpoint was successful and decide whether conditions
are right to allow a restart.
About this task
If the return code is greater than 4, an error has occurred in the checkpoint. Check the return code to prevent a restart that could cause incorrect output.
Related references
z/OS® DFSMS: Checkpoint/Restart (Return codes)
z/OS® DFSMS: Checkpoint/Restart (Return codes)