DESC sys.io_global_by_wait_by_bytes;
Field	Type	Null	Key	Default	Extra
event_name	varchar(128)	YES		NULL	
total	bigint(20) unsigned	NO		NULL	
total_latency	varchar(12)	YES		NULL	
min_latency	varchar(12)	YES		NULL	
avg_latency	varchar(12)	YES		NULL	
max_latency	varchar(12)	YES		NULL	
count_read	bigint(20) unsigned	NO		NULL	
total_read	text	YES		NULL	
avg_read	text	YES		NULL	
count_write	bigint(20) unsigned	NO		NULL	
total_written	text	YES		NULL	
avg_written	text	YES		NULL	
total_requested	text	YES		NULL	
SELECT * FROM sys.io_global_by_wait_by_bytes;
DESC sys.x$io_global_by_wait_by_bytes;
Field	Type	Null	Key	Default	Extra
event_name	varchar(128)	YES		NULL	
total	bigint(20) unsigned	NO		NULL	
total_latency	bigint(20) unsigned	NO		NULL	
min_latency	bigint(20) unsigned	NO		NULL	
avg_latency	bigint(20) unsigned	NO		NULL	
max_latency	bigint(20) unsigned	NO		NULL	
count_read	bigint(20) unsigned	NO		NULL	
total_read	bigint(20)	NO		NULL	
avg_read	decimal(23,4)	NO		0.0000	
count_write	bigint(20) unsigned	NO		NULL	
total_written	bigint(20)	NO		NULL	
avg_written	decimal(23,4)	NO		0.0000	
total_requested	bigint(21)	NO		0	
SELECT * FROM sys.x$io_global_by_wait_by_bytes;
