ASA Database Administration Guide
  Database Options
    Alphabetical list of options

BACKGROUND_PRIORITY option [database]

Function 

To limit impact on the performance of connections other than the current connection.

Allowed values 

ON, OFF

Scope 

Can be set for an individual connection or for the PUBLIC group. Takes effect immediately.

If you set this option temporarily, that setting applies to the current connection only. Different connections under the same user ID can have different settings for this option.

Default 

OFF

Description 

When set to ON, it requests that the current connection have minimal impact on the performance of other connections. This option allows tasks for which responsiveness is critical to coexist with other tasks for which performance is not as important.