Updated on 2023-10-23 GMT+08:00

GS_SESSION_MEMORY_STATISTICS

GS_SESSION_MEMORY_STATISTICS displays load management information about memory usage of ongoing complex jobs executed by the current user. (The current feature is a lab feature. Contact Huawei engineers for technical support before using it.) Only the user with sysadmin permission can query this view.

Table 1 GS_SESSION_MEMORY_STATISTICS columns

Name

Type

Description

datid

oid

OID of the database that the backend is connected to

usename

name

Name of the user logged in to the backend

pid

bigint

Process ID of the backend

start_time

timestamp with time zone

Time when the statement starts to run

min_peak_memory

integer

Minimum memory peak of the statement across all DNs, in MB

max_peak_memory

integer

Maximum memory peak of the statement across all DNs, in MB

spill_info

text

Statement spill information on all DNs:

None: No data is spilled to disks on all DNs.

All: Data is spilled to disks on all DNs.

[a:b]: The statement has been spilled to disks on a of b DNs.

query

text

Statement being executed

node_group

text

Logical cluster of the user running the statement. (The current feature is a lab feature. Contact Huawei engineers for technical support before using it.)

top_mem_dn

text

Top N memory usage