Reserve memory for critical activities in embedded environments

You can reserve a specific amount of memory for use when critical activities (such as rollback activities) are needed and the database server has limited free memory. When you reserve memory, critical activities, such as rollback activities, can complete even when you receive out-of-memory errors.

To reserve memory for critical activities, set the LOW_MEMORY_RESERVE configuration parameter to a specified value in kilobytes. You can also change the LOW_MEMORY_RESERVE value by using the onmode -wf or onmode -wm utility.