Communication Methods › Control and Checkpoint File Considerations

Control and Checkpoint File Considerations

Checkpoint files differ from control files in several ways:

• Control files are identified by a ddname of MIMTBLnn, where nn is a numeric value from 00 to 99, inclusive. Checkpoint files are identified by a ddname of MIMCKPnn, where nn is a numeric value from 00 to 99, inclusive.
• Checkpoint files may never be shared between systems, but control files must be shared. Use the IFSYS and ENDIF statements in the MIMINIT member to define unique MIMINIT CHKPTDSN statements or unique ALLOCATE commands for each system in your complex.