desc oceanbase.__all_virtual_thread;
Field	Type	Null	Key	Default	Extra
svr_ip	varchar(46)	NO		NULL	
svr_port	bigint(20)	NO		NULL	
tenant_id	bigint(20)	NO		NULL	
tid	bigint(20)	NO		NULL	
tname	varchar(16)	NO		NULL	
status	varchar(32)	NO		NULL	
wait_event	varchar(64)	NO		NULL	
latch_wait	varchar(16)	NO		NULL	
latch_hold	varchar(256)	NO		NULL	
trace_id	varchar(40)	NO		NULL	
loop_ts	timestamp(6)	NO		NULL	
cgroup_path	varchar(256)	NO		NULL	
desc oceanbase.GV$OB_THREAD;
Field	Type	Null	Key	Default	Extra
SVR_IP	varchar(46)	NO		NULL	
SVR_PORT	bigint(20)	NO		NULL	
TENANT_ID	bigint(20)	NO		NULL	
TID	bigint(20)	NO		NULL	
TNAME	varchar(16)	NO		NULL	
STATUS	varchar(32)	NO		NULL	
LATCH_WAIT	varchar(16)	NO		NULL	
LATCH_HOLD	varchar(256)	NO		NULL	
TRACE_ID	varchar(40)	NO		NULL	
CGROUP_PATH	varchar(256)	NO		NULL	
select count(1) from oceanbase.__all_virtual_thread where tname = "";
count(1)
0
select count(1) from oceanbase.V$OB_THREAD where tname = "observer";
count(1)
1