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MEMORY_NO_MORE_PAGING

The SAP system's roll and paging area is exhausted.

The system could not allocate more pages in the central roll/paging memory pool shared across all work processes. This is distinct from TSV_TNEW_PAGE_ALLOC_FAILED, which is per-work-process heap exhaustion.

Symptom

ST22 shows:

Runtime Errors         MEMORY_NO_MORE_PAGING
Short text             No more paging space available.

This dump often affects multiple users simultaneously — if several sessions dump at the same time with this error, it is a system-level resource problem, not a single program bug.

Cause

The roll/paging area (rdisp/PG_MAXFS parameter) holds context data for user sessions that are rolled out of a work process (between screen steps, RFC calls, etc.). It fills up when:

  • Too many concurrent user sessions hold large amounts of context data.
  • Programs keep extremely large local variables or internal tables in memory across screen interactions.
  • Long-running transactions that accumulate context without releasing it.
  • A sudden spike in concurrent users exceeding the configured pool size.

Roll area vs heap area

TSV_TNEW_PAGE_ALLOC_FAILED = work-process local heap (individual program used too much memory). MEMORY_NO_MORE_PAGING = the shared roll/page pool (systemic — affects all users).

Fix

Immediate (operational)

  1. Check SM50 — identify work processes consuming the most roll memory.
  2. Cancel long-running or stuck sessions from SM50 (Process → Cancel with Core).
  3. Ask Basis to check and if necessary increase rdisp/PG_MAXFS in the instance profile (requires restart).

Code-level fixes

" Free large internal tables when no longer needed
CLEAR lt_large_table.
FREE lt_large_table.

" Use PACKAGE SIZE to avoid holding all data in memory at once
SELECT * FROM bkpf
  INTO TABLE @DATA(lt_chunk)
  PACKAGE SIZE 5000.
  " process chunk
ENDSELECT.

Design-level fixes

  • Move bulk processing to background jobs — background WPs have separate memory pools and don't compete with dialog sessions for roll space.
  • Avoid keeping large result sets alive across multiple screen steps; re-query as needed instead.
  • Use FREE on large tables as soon as they are no longer needed in long-running transactions.

This dump is often a Basis issue, not a code bug

If this dump occurs sporadically under high load but the program itself runs fine normally, the root cause is system sizing — escalate to Basis for profile parameter review.

Prevention

  • Design dialog programs to minimize data kept in memory between PAI and PBO (use the database as the store, not internal tables in global memory).
  • Use background jobs for operations that require large memory footprints.
  • Monitor roll area usage with ST02 (Buffer Statistics → Roll area utilization).

See also

  • TSV_TNEW_PAGE_ALLOC_FAILED — per-work-process memory exhaustion
  • TIME_OUT — related dump from long-running processes
  • Transaction SM50 — work process monitor
  • Transaction ST02 — buffer statistics
  • Transaction ST22 — ABAP runtime error analysis

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