Dynamic Resource Mastering (DRM)

Lck - affinity check for dynamic remastering

Lmd - lmd reads remastering queue and initiate grd freeze

Lemon - performs reconfiguration of buffer cache locks working with LMS

DRM - dynamic resource mastering

DRM freezes the global resources during the reconfiguration event and no new resources can be allocated during the reconfiguration. This freeze has a dramatic effect of inducing huge amount of waits for gc buffer busy [acquire|release] events and other gcs drm freeze release, gcs remaster events. In database version 12c, DRM has been improved further.