The predictive storage governor specifies a temporary storage limit
for database queries. You can use the query governor to test if a query uses
any temporary object to run the query, such as a hash table, sort or temporary
index.
To test for a temporary object's usage, do the following:
- Set the query storage limit to zero ( QRYSTGLMT(0) ) using the Change
Query Attributes (CHGQRYA) command or in the INI file. This forces
an inquiry message from the governor anytime a temporary object will be used
for the query, regardless of the temporary object's estimated size.
- Prompt for message help on the inquiry message and find the same information
that you can find by running the Print SQL Information (PRTSQLINF) command.
This allows you to see what temporary object(s) was involved.
