3147911 - What cause the request(s) to be queued by Admission Control feature of SAP HANA?

• You want to know one or more of the following reasons, even though the Admission Control parameter thresholds are not being met:
  
  
  • Why are the requests queued by Admission Control feature?
  • Why are records in the M_ADMISSION_CONTROL_EVENTS table?
  • Why are records in the M_ADMISSION_CONTROL_QUEUES table?
  • Why are records in the M_ADMISSION_CONTROL_STATISTICS table?
    
    
• You receive the following error message (2908549)
  

  1038: rejected as server is temporarily overloaded

• You receive ABAP dump with error message below (2908549)  

  Database error text: "SQL message: rejected as server is temporarily overloaded"

"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, platform edition 2.0

admission control, queue_cpu_threshold, queue_memory_threshold, M_ADMISSION_CONTROL_EVENTS, M_ADMISSION_CONTROL_STATISTICS, load_monitor_granularity, HANA, saphana, database, DB, rejected as server is temporarily overloaded, 1038 , KBA , HAN-DB-MON , SAP HANA Monitoring , HAN-DB-ENG , SAP HANA DB Engines , HAN-DB-PERF , SAP HANA Database Performance , How To