DFS3937I UNABLE TO ACCESS STORAGE WHILE FORMATTING THE ccc...ccc

Explanation

During memory dump formatting, an error was encountered while attempting to access dumped storage. The field ccc...ccc, which can be up to 16 bytes in length, identifies the control block or data area being formatted.

In an online environment, memory dump storage is in the IMS Dump Formatter.

The most common memory dump storage access errors are:
  • STORAGE NOT AVAILABLE. The requested storage was not in the memory dump.
  • PARTIAL STORAGE AVAILABLE. A portion of the requested storage was in the memory dump.

System action

For most errors, a diagnostic memory dump immediately follows this message. This diagnostic memory dump consists of the following:
  • The contents of SDWA, which includes the PSW, completion code, module ID, registers, and a memory dump of the SDWA area.
  • Instruction area, which includes 128 bytes of data before and after the failing instruction (total of 256 bytes).
  • Communications area, which is the control block used by the IMS Dump Formatter for intercommunication between the formatting modules.
  • Save area, which is a memory dump of the save area set used by the memory dump formatter.
  • The memory dump formatter module vector table.
  • Dump formatter storage buffer header and prefixes (offline formatting only).
  • Dump option request block storage (offline formatting only).

Following the diagnostic memory dump of the error, the dump formatter continues formatting the next IMS control block requested.

A diagnostic memory dump is suppressed when any of the following forms of ccc...ccc is received:
  • 'PSB' (and there is no DL/I storage in the memory dump)
  • 'AUTO OPTION PROC' (and debug was not requested)
  • 'ABND DIAG. AREA'
  • 'SA - EP ADDRESS'
  • 'SAP'
  • 'ECB PREFIX'
  • 'SAVE AREA'
  • 'REGISTER AREA'
  • 'SA - INV FWD PTR'
  • 'QUEUE BUFFERS'
  • 'UEHB'
  • 'LATCH LIST'
  • 'ECB STORAGE'
  • 'XMCI BLOCK'
  • 'USE LIST (CULE)'

User response

Despite the failure of the IMS Dump Formatter, the output might still provide enough information to help you diagnose your original problem. If the memory dump formatter output does not provide enough information, contact the IMS system programmer.

Programmer response

Use the diagnostic memory dump to determine the cause of the problem. If the diagnostic memory dump is suppressed, contact the IMS system programmer.