SAP Short Dump TIME_OUT: Maximum Runtime Exceeded
SAP runtime error TIME_OUT short dump
Also searched as
- how to fix TIME_OUT dump SAP
- SAP dialog process time out error
- ST22 TIME_OUT maximum runtime exceeded
Short answer
A TIME_OUT runtime error means a dialog (or RFC) work process ran longer than the maximum allowed runtime, controlled by profile parameter rdisp/max_wprun_time (600 seconds by default). The fix is almost always to move the long-running work to background processing or tune the underlying program, not to raise the timeout.
Applies to: SAP NetWeaver Basis 7.x and S/4HANA (ABAP stack), all dialog and RFC work processes
Diagnose and resolve a TIME_OUT dump
- 1Open ST22, find the dump, and read the program, include and line number under 'Where terminated', plus the runtime figure under 'What happened'.
- 2If it is reproducible, watch SM50 (or SM66 across the system) while the process runs to see the work process status, current ABAP statement and whether it is CPU-bound or waiting on the database.
- 3Trace the actual bottleneck with ST05 (SQL trace) or SAT (runtime analysis) for the failing program to find the specific statement consuming the time.
- 4If the process is really a report being run online, switch it to background execution (SA38/SE38 with F9 or SM36) since background work processes are not bound by the same dialog runtime limit.
- 5If it is a genuine slow SQL statement, optimize it - add missing WHERE conditions, avoid SELECT statements inside a LOOP, or add a secondary index with Basis/DBA involvement.
- 6Check SM12 for lock entries and the database for blocking sessions - a TIME_OUT can be the visible symptom of a lock wait or deadlock retry loop rather than pure CPU time.
- 7Only after ruling out the above, and with Basis approval, consider raising rdisp/max_wprun_time - understand this is a system-wide dialog parameter, and for Fiori/OData timeouts you also need to check the relevant ICM/HTTP parameters separately.
- 8Retest and confirm in ST22 that the dump does not recur, then check SM21 for related warnings around the original dump time.
What TIME_OUT protects against
SAP's dispatcher enforces a maximum runtime per dialog work process so a single long-running screen or report cannot monopolize a work process and back up the dialog queue for every other user. When a dialog process exceeds rdisp/max_wprun_time (600 seconds by default), the kernel kills it and raises a TIME_OUT runtime error by design.
This is not a bug to work around by simply increasing the number; it is a resource protection mechanism, and the correct response is almost always to change how or where the long work runs.
Diagnosing the real cause
Start in ST22 for the exact program, include and line, then reproduce with SM50/SM66 open to watch the work process live. If the process shows a long-running SQL statement, an SQL trace with ST05 (or SAT for a full runtime analysis) usually pinpoints a missing index, a nested SELECT inside a loop, or a poorly filtered query returning far more rows than expected.
Custom Z-reports doing row-by-row processing (SELECT inside a LOOP instead of a single set-based statement) are the single most common cause seen in practice, followed by missing indexes on custom Z-tables.
ST22 -> select dump -> 'Where terminated' tab for program/include/line
SM50 or SM66 -> filter to the failing user/program while reproducing
ST05 -> Activate trace -> reproduce -> Display trace, filtered by duration
Background versus dialog execution
Background (BTC) work processes are not subject to the same wall-clock cutoff as dialog work processes, which is exactly why a report can time out when run online but succeed cleanly when scheduled as a background job through SM36 or executed with F9 from SA38.
For genuinely interactive transactions that cannot be backgrounded, the real fix is performance tuning of the program or its data volume, not a longer timeout.
When TIME_OUT is actually a lock or contention problem
Sometimes the dump is the visible symptom of the process waiting on an ABAP/Enqueue lock held by another session, or the database engine repeatedly retrying a deadlocked transaction. Check SM12 for outstanding lock entries against the same object, and check the database's own blocking-session view if locks look clear on the SAP side.
A TIME_OUT occurring during an update task (V1/V2) points to different update-task tuning, not the dialog rdisp/max_wprun_time parameter, so confirm which work process type actually dumped before choosing a fix.
Common pitfalls
- !Raising rdisp/max_wprun_time system-wide masks the underlying bad code and can let the dialog queue back up further under load, delaying unrelated work for other users.
- !Fiori/OData and other HTTP-based timeouts are governed by separate ICM parameters, not just rdisp/max_wprun_time - changing one without the other fixes nothing for web-based calls.
- !A TIME_OUT during an update task (V1/V2) needs different tuning than a dialog-triggered one; treating them the same wastes effort.
- !SELECT statements inside ABAP LOOPs against large tables are the most common root cause and are easy to miss in a quick code review - trace it, do not guess.
- !Reproducing intermittently (only under load) usually points to lock contention or resource pressure, not a consistently slow statement - check SM12 and system load, not just the code.
How an ERP-grounded AI assistant handles this
ERPray grounded on your SAP Basis and ABAP layer can correlate an ST22 TIME_OUT dump with the relevant SM50 snapshot and known-slow-statement history in one query, surfacing whether a given dump is a code problem, a lock wait, or a genuine background-candidate report - cutting the usual ST22/SM50/ST05 hop between transactions.
Frequently asked questions
What is the default value of rdisp/max_wprun_time?
600 seconds (10 minutes) is the common default, though it can be set differently per system. Check the actual value with transaction RZ11 rather than assuming the default is in effect.
Will running the report in background always avoid TIME_OUT?
Background work processes are not bound by the dialog runtime limit, so most long-running reports succeed there, but an extremely slow or looping program can still be killed by other limits (job runtime restrictions, database timeouts) if the underlying code is not fixed.
Can end users fix a TIME_OUT dump themselves?
No - it requires either a Basis/ABAP investigation into the actual bottleneck or a change to how the transaction is executed (for example, scheduling it in background). End users should report the dump number and time to Basis rather than retrying repeatedly.
Is TIME_OUT the same for RFC calls?
RFC calls run in their own work process pool and are also subject to runtime limits, though the relevant parameters differ slightly from pure dialog processing. The diagnostic approach (ST22, then SM50/ST05) is the same.
Related
SAP IDoc Status 51: Application Document Not Posted
Status 51 tells you the IDoc reached the application layer and failed to post, but the status text itself is not the error - the real cause sits in the status record's long text or the linked application log. Fix the underlying data or configuration, then reprocess the IDoc through BD87 rather than editing the status.
How-toHow to Use BAPI_TRANSACTION_COMMIT Correctly
SAP's BAPI programming model separates business logic from the database commit on purpose, so a caller must explicitly call BAPI_TRANSACTION_COMMIT after a successful BAPI - usually with WAIT = 'X' - or the created object never actually persists. Skipping this step, or forgetting WAIT, is the most common reason a BAPI 'runs fine' but nothing gets saved.
Error fixSAP M7 021: Deficit of SL Stock Quantity
M7 021 fires during a goods issue, delivery, or confirmation when SAP checks the unrestricted-use (SL) stock for the exact plant, storage location and batch combination and finds less than what you are trying to post out. Fix the entry (batch, storage location, quantity) first; only enable negative stock or downgrade the message to a warning if the business genuinely needs to post ahead of a receipt.
How-toHow to Read MD04 Exception Messages in SAP
The exception indicator in MD04 flags procurement elements whose date or quantity no longer matches the current demand situation - it is SAP's built-in change signal, read element by element in the detail screen, not just the header icon. Triage by exception group first, then decide to reschedule, cancel, or accept each one.
Error fixSAP F5 060: Posting Only Possible in Periods X and Y
Message F5 060 fires when a document date falls in a fiscal period that the posting period variant has not opened for that account type. Either change the document/posting date into an open period, or have Finance open the required period and account type in OB52 for the relevant variant.
Error fixSAP KI 235: G/L Account Requires an Assignment to a CO Object
KI 235 means a primary cost or revenue element exists (or should exist) on a P&L account, but the posting you are entering has no valid Controlling object - cost center, order, WBS element or profitability segment - to receive it. Add the account assignment on the posting, or set a default cost center via OKB9 so future postings resolve automatically.
AI for ERPGet AI Value From SAP ECC Now, and Use It to De-Risk the Move to S/4HANA
SAP ECC 6.0 mainstream maintenance ends in 2027. Add AI value on ECC now, using its existing BAPIs and IDocs, and use it to de-risk the S/4HANA migration.
AI for ERPAI for SAP S/4HANA, Running On-Prem or in Your Private Cloud
Run AI on SAP S/4HANA without sending ERP data to a public API. On-prem and private-cloud architecture, CDS views, OData, and honest deployment trade-offs.
AI for ERPSAP AI Consulting for On-Prem and Private Deployments
What to demand from an SAP AI consulting partner when data must stay on-prem or private: OData/BAPI mechanics, Joule vs. private LLM, and buyer questions.
Stuck on SAP ERP (ECC 6.0 / S/4HANA)?
Talk to engineers who work inside SAP ERP (ECC 6.0 / S/4HANA) every week, and who build private AI that answers these questions from your own ERP data.