TSV_TNEW_BLOCKS_NO_ROLL_MEMORY — TSV_TNEW_BLOCKS_NO_ROLL_MEMORY memory exhaustion dump

TSV_TNEW_BLOCKS_NO_ROLL_MEMORY is a runtime error raised when the ABAP kernel cannot allocate a new memory block for the running work process because the configured memory pools are exhausted, not just roll area but usually extended memory and the heap behind it. It belongs to the family of TSV_TNEW_* memory dumps that fire when the memory management layer tries to hand a program the next block it requested, typically to grow an internal table, extend a string, or push a new work area, and finds nothing left to give. The 'TSV' prefix reflects the internal table space vector the kernel uses to track allocated blocks. This is a resource-exhaustion dump, not a logic exception; it cannot be caught with TRY/CATCH. The work process's current request is terminated mid-statement, so whatever the program was doing at that line is simply abandoned.

If the cause is unbounded table growth or missing package processing in custom ABAP, the fix belongs to development: add a WHERE clause or selection criteria, introduce package size processing with intermediate commits, or add a hard cap with an early exit; this requires a transport through the normal change request process, Basis cannot patch it. If the cause is a concatenation pattern or unreleased objects, refactor to use string templates or add FREE and CLEAR at the right points, again a development fix requiring a change request. If the cause is recursion without an exit condition, add or correct the terminating condition. If the cause is genuinely undersized parameters for an otherwise well-written workload, Basis increases extended memory and roll parameters through the profile maintenance transaction, tests in a non-productive instance, and schedules an instance restart to apply; this is an infrastructure change, not a code fix. If the cause is contention from parallel jobs, reschedule background jobs to avoid overlap or add capacity, a Basis and job-scheduling action with no code change. Raising memory parameters without first confirming the code is not leaking only delays recurrence.

The reflex is to ask Basis to raise the extended memory and roll parameters and move on. This works immediately because the dump stops appearing for weeks or months, which makes it look like a fix. It is not one: a program that grows an internal table without limit or leaks objects across executions will hit the new, larger ceiling eventually, usually with a bigger production dataset and worse timing than the first occurrence. Meanwhile the enlarged memory footprint of one badly behaved program now competes with every other process for the same expanded shared pool, making unrelated jobs more fragile in the interim.

Make WHERE clauses and package size limits a coding standard for any custom program reading mass data, and check for it in code review before transport. Watch ST02 trend graphs for extended memory swap and in and out rates rather than waiting for a dump to surface the problem. Run memory profiling with the runtime analysis tools on any report processing large datasets before it reaches production. Set an early warning alert on extended memory consumption per work process. Enforce FREE and CLEAR discipline for large internal tables and objects at the end of subroutines, particularly in reports executed repeatedly within one session.

ABAP development owns any occurrence traceable to custom code; the fix is a coding change requiring a transport. Basis owns memory parameter sizing and system-wide monitoring, and any parameter increase requires an instance restart. The handover note should include the ST22 dump identifier, the program, include and line number, the memory usage figures shown in the dump, and whether ST02 shows the pool exhausted system-wide or only for the one work process involved.

Closely related to TSV_TNEW_PAGE_ALLOC_FAILED and TSV_TNEW_OCCURS_NO_ROLL_MEMORY, which are triggered by the same memory exhaustion mechanism at slightly different allocation points, and to SYSTEM_NO_ROLL and MEMORY_NO_MORE_PAGING, which sit in the same family and are diagnosed through the same ST02 and ST22 checks. Frequently raised by custom reports using FOR ALL ENTRIES against large tables without packaging, ALV programs that never release the output table, and background jobs with unbounded internal table growth.