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3610438 - Intermittent Slowness Caused by Frequent Unload

Symptom

1. System experiences intermittent slowness when running different requests.
2. Though system size is large, used memory of HANA is low.
3. When checking the data collector of slow statement, there are many loads and unloads records. The unload reason is UNUSED RESOURCE. And the execution time of the statement is comparable to the load time.
4. Mini check report shows M0437 "Size of unloaded columns (% / day, long-term)".


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Environment

  • SAP HANA, platform edition 1.0
  • SAP HANA, platform edition 2.0

Keywords

KBA , HAN-DB , SAP HANA Database , HAN-DB-PERF , SAP HANA Database Performance , Problem

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