GS_ASP

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 unique SQL 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 options are as follows:

• active: The backend is executing a query.
• idle in transaction: The backend is in a transaction. However, no statement is being executed in the transaction.
• idle in transaction (aborted): The backend is in a transaction, but there are statements failed in the transaction.
• fastpath function call: The backend is executing a fast-path function.
• disabled: This state is reported if track_activities is disabled in this backend.