The NCP dump data set receives the NCP dump output (one data set for each host z/OS® Communications Server). To dump NCP, you need to allocate space for this data set. You can also catalog this data set. The name of the NCP dump data set is defined when NCP is coded.
This dump data set must accommodate a dump of the entire communication controller storage. The size of communication controller storage depends on the model number.
The DD statement defines the dump data set for the communication controller. The ddname must match the ddname on the DUMPDS operand of the PCCU definition statement for the associated NCP. z/OS Communications Server has no restrictions on the data set name.
z/OS Communications Server dump processing fails if the SSP modules that need to be loaded to process the dump are not accessible to z/OS Communications Server. See SYS1.SSPLIB for information on SYS1.SSPLIB requirements.
For more information about the NCP dump data set, see the NCP, SSP, and EP Diagnosis Guide.