3739902 - SAP Datasphere - Unknown Expensive Statements related to space name $$global$$ and object type SYSTEM

In Datasphere → Monitor → Statement Logs, high HANA peak memory usage is shown for the $$global$$ space, as attached below.
However, when checking the Statement Details for more information, the statement appears as null, with the statement_hash displayed as "?".



* Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental. 

SAP HANA Cloud
SAP Datasphere

The information of Datasphere → Monitor ->Statement Logs is getting data from m_expensive_statements, m_out_of_memory_events.
Upon reviewing the output of the SQL: "HANA_Memory_OutOfMemoryEvents_<version info>.txt", there are some entries show the statement_hash as "?".

In this situation, there is no need to focus on why a statement with a "?" statement_hash has a high peak memory.
If the statement_hash is shown as "?", it typically relates to internal system operations or background processes (e.g., backup, GC jobs) that are affected by a global out-of-memory (OOM) situation, these are considered victims of the global OOM event. Therefore, the focus should be on analyzing the root cause of the global OOM situation in HANA.

1999997 - FAQ: SAP HANA Memory

empty, null , KBA , HAN-CLS-HC , HANA Cloud Services HANA Cloud , DS-SYSMON , Datasphere System Monitor , HAN-DB , SAP HANA Database , Problem