GS_ASP

GS_ASP displays the persistent ACTIVE SESSION PROFILE samples. This system catalog can be queried only in the system library.

**Table 1** GS_ASP columns
Name	Type	Description
sampleid	bigint	Sample ID.
sample_time	timestamp with time zone	Sampling time.
need_flush_sample	boolean	Specifies whether the sample needs to be flushed to disks. t (true): yes. f (false): no.
databaseid	oid	Database ID.
thread_id	bigint	Thread ID.
sessionid	bigint	Session ID.
start_time	timestamp with time zone	Start time of a session.
event	text	Specified event name.
lwtid	integer	Lightweight thread ID of the current thread.
psessionid	bigint	Parent thread of the streaming thread.
tlevel	integer	Level of the streaming thread. The value corresponds to the level (ID) of the execution plan.
smpid	integer	Concurrent thread ID in SMP execution mode.
userid	oid	ID of a session user.
application_name	text	Name of the application.
client_addr	inet	IP address of a client.
client_hostname	text	Name of a client.
client_port	integer	TCP port number used by a client to communicate with the backend.
query_id	bigint	Debug query ID.
unique_query_id	bigint	Unique query ID.
user_id	oid	User ID in the key of the unique query.
cn_id	integer	A CN ID indicates a CN from which the unique SQL statement is obtained. The cn_id is in the key of the unique query.
unique_query	text	Standardized UniqueSQL text string.
locktag	text	Information of a lock that the session waits for. It can be parsed using locktag_decode.
lockmode	text	Mode of a lock that the session waits for. LW_EXCLUSIVE: exclusive lock. LW_SHARED: shared lock. LW_WAIT_UNTIL_FREE: waits for the LW_EXCLUSIVE to be available.
block_sessionid	bigint	Blocks a session from obtaining the session ID of a lock if the session is waiting for the lock.
wait_status	text	Provides more details about the event column.
global_sessionid	text	Global session ID.
xact_start_time	timestamp with time zone	Start time of the transaction.
query_start_time	timestamp with time zone	Time when the statement starts to be executed.
state	text	Current statement state. The value can be active, idle in transaction, fastpath function call, idle in transaction (aborted), disabled, or retrying.