The recommended method is IPCS COPYDUMP. IPCS COPYDUMP can run without a dump directory being employed. Use the DEFER option when initiating the IPCS session to tell IPCS to defer accessing a dump directory until one is required. In z/OS® V1R7 and above, IPCS COPYDUMP has the ability to merge the records from a multi-volume SADMP and recapture the prioritized order used by SADMP to get the most important data into the dump data sets first.
If SADMP is allowed to complete normally, IEBGENER and similar transcription programs can produce a logically complete dump data set that IPCS can process. However, IPCS performance, particularly IPCS dump initialization, degrades as more volumes are added to the SADMP data set.