Workspaces performance tuning
Workspaces use database views instead of tables to retrieve data. Retrieval
of underlying data might be more time-consuming because of the complexity of SQL
statements that are used in workspace view definitions. Data retrieval from
a single workspace view is unlikely to have a significant a performance impact. However,
joining (inner or outer join) multiple workspace views can decrease performance.
- Run the following
command:
db2set DB2_UNION_OPTIMIZATION=ENABLE_NESQ_PD_THRU_UA=YES - Restart the DB2 database manager for the settings to take effect.