SAP Knowledge Base Article - Preview

2141215 - Queries on Data-Only-Lock (DOL) tables doing a Nested Loop Join (NLJ) may sometimes experience High Contention on buffer spinlock resulting in slowness of query or server. - ASE

Symptom

  • Query involving Data-Only-Lock (DOL) tables
  • A Nested Loop Join (NLJ) strategy is chosen
  • Queries may experience High Contention on cache buffer spinlock, resulting in slowness of the query
  • Multiple sessions running similar queries may result in an overall system slowness

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Environment

SAP Adaptive Server Enterprise (ASE) 15.7

Product

SAP Adaptive Server Enterprise 15.7

Keywords

select, buffer spinlock contention, performance , KBA , optimizer , spinlock contention , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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