Hash Join Small Overflows



Snapshot Level
Database
Application


Logical Data Grouping
dbase
appl


Monitor Switch
Basic
Basic


Resettable


Yes


 


Event Type
Database
Connection


Logical Data Grouping
db_event
conn_event


 


Element Name
Element Type



hash_join_small_overflows
counter

Description:  The number of times that hash join data exceeded the available sort heap space by less than 10%.

Usage:  If this value and "Hash Join Overflows" are high, then you should consider increasing the sort heap threshold. If this value is greater than 10% of "Hash Join Overflows", then you should consider increasing the sort heap size.