Symptom
- A select query with MAX() aggregate function on an allpages locked table may be slow when a lot of pages are read from disk on AIX platforms.
- The following information can be seen in the showplan messages.
|SCALAR AGGREGATE Operator (VA = 1)
| Evaluate Ungrouped MAXIMUM AGGREGATE.
| Scanning only up to the first qualifying row.
|
| |SCAN Operator (VA = 0)
| | FROM TABLE
| | <table name>
| | Using Clustered Index.
| | Index : <index name>
| | Backward scan.
| | Positioning at end of table.
Read more...
Environment
SAP Adaptive Server Enterprise (ASE) 16.0
Product
Keywords
CR#826213 , CR826213 , #826213, descending , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed
About this page
This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.
SAP Knowledge Base Article - Preview