2705562 - Became unresponsive status, after 'All buffer cache pages are in use " -- SAP IQ

Symptom

IQ server became unresponsive status for long time. Finally DBA restarted server. Before the hang, there were following messages and this msg has much to do with the hang problem.
      ...
      Insufficient buffers for 'Sort'
      Insufficient buffers for 'Run'

Environment

SAP IQ 16.1

Product

SAP IQ 16.1

Keywords

"Insufficient buffers" ; "All buffer cache pages are in use" ; GetCleanPage ; DestroyAllMappedPages ; archived KBAs: 2278361 2252629 2452208 2142208 21447351 2762484 2149266 2003554 2305087 , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed

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