Oracle® Business Intelligence Server Administration Guide > Query Caching in the Oracle BI Server > Creating Aggregates for Oracle BI Server Queries >
About Setting the Logging Level
Trace logs will be logged to NQQuery.log if the logging level is at least 2. The logging events will include the aggregate execution plan and the order in which the aggregates are created and deleted. Higher logging levels provide more details about the query and execution plans.
Error logs will be logged to NQQuery.log if the logging level is at least 1 and to NQServer.log regardless of the logging level.