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.