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OMS heap utilization <percentage>%, used/allocated/max: <used_size>/<allocated_size>/<heap_limit_size> MB


This message can occur for SAP liveCache technology only.

The memory requirements in the OMS heap are high for the running DB procedures.

If the memory utilization in the OMS heap reaches 100%, there is the risk of errors in the DB procedures (Out Of Memory Exceptions), or that OMS version data is swapped from the OMS heap to the global data cache (OMS version is unloaded).

User Response

If necessary, increase the size of the OMS heap.

Check whether the configuration of your database and hardware meets the requirements of the SAP liveCache application.


More Information

Relevant  DB-Analyzer Files
Helpful with ...
DBAN_CACHE_OCCUPANCY.csvCache load and occupancy (proportion of OMS, SQL, and history pages in the data cache)
DBAN_OMS_HEAP.csvInformation on the OMS heap (such as occupancy, current size, collisions) 
SAP Note
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1128916 - FAQ: SAP MaxDB/liveCache Heap-Management  Provides information about the memory usage of the SAP MaxDB/liveCache kernel process. 
Expert Sessions (Link to trainings)
Content / Helpful with ...
Documentation (links)
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