high waits gc cr block busy', 'gc cr block 2-way', 'gc cr block 3-way', 'gc cr multi block request

Node 1

Top 5 Timed Foreground Events

Event	Waits	Time(s)	Avg wait (ms)	% DB time	Wait Class
gc cr block busy	871,043	2,452	3	32.22	Cluster
gc cr block 3-way	2,507,734	2,295	1	30.16	Cluster
DB CPU		1,862		24.47
gc cr multi block request	399,582	817	2	10.73	Cluster
gc cr block congested	91,275	177	2	2.33	Cluster

Node 2

Top 5 Timed Foreground Events

Event	Waits	Time(s)	Avg wait (ms)	% DB time	Wait Class
gc cr block 2-way	2,808,834	2,678	1	34.34	Cluster
gc cr block busy	926,412	2,436	3	31.24	Cluster
DB CPU		1,360		17.44
gc cr multi block request	306,914	710	2	9.10	Cluster
gc cr block lost	656	371	565	4.76	Cluster

Node 3

Top 5 Timed Foreground Events

Event	Waits	Time(s)	Avg wait (ms)	% DB time	Wait Class
gc cr block 3-way	2,684,870	3,854	1	28.70	Cluster
gc cr block busy