DESC sys.waits_by_host_by_latency;
Field	Type	Null	Key	Default	Extra
host	varchar(255)	YES		NULL	
event	varchar(128)	NO		NULL	
total	bigint(20) unsigned	NO		NULL	
total_latency	varchar(12)	YES		NULL	
avg_latency	varchar(12)	YES		NULL	
max_latency	varchar(12)	YES		NULL	
SELECT * FROM sys.waits_by_host_by_latency;
DESC sys.x$waits_by_host_by_latency;
Field	Type	Null	Key	Default	Extra
host	varchar(255)	YES		NULL	
event	varchar(128)	NO		NULL	
total	bigint(20) unsigned	NO		NULL	
total_latency	bigint(20) unsigned	NO		NULL	
avg_latency	bigint(20) unsigned	NO		NULL	
max_latency	bigint(20) unsigned	NO		NULL	
SELECT * FROM sys.x$waits_by_host_by_latency;