In this post, I am sharing a script to get all the information related to configured Resource Queues of Greenplum.
Once we set resource queues and their priorities, then also we should check RQ configuration frequently to achieve the frequent changes in user role group and their preferences.

SELECT
	grs.rsqname       
	,grs.rsqcountlimit 
	,grs.rsqcountvalue  
	,grs.rsqcostlimit   
	,grs.rsqcostvalue   
	,grs.rsqmemorylimit 
	,grs.rsqmemoryvalue 
	,grs.rsqwaiters     
	,grs.rsqholders     
	,(select ressetting from pg_resqueue_attributes b
	where b.rsqname = grs.rsqname and resname='priority') as Priority
	,(select ressetting from pg_resqueue_attributes b
	where grs.rsqname=b.rsqname and resname='cost_overcommit') as CostOvercommit
	,(select count(*) from pg_resqueue x,pg_roles y
	where x.oid=y.rolresqueue and grs.rsqname=x.rsqname) as RQAssignedUsers
	,(select count(*) from pg_resqueue x,pg_roles y
	where x.oid=y.rolresqueue and grs.rsqname=x.rsqname and y.rolcanlogin = 't') as RQLogUsers
	,(select count(*) from pg_resqueue x,pg_roles y
	where x.oid=y.rolresqueue and grs.rsqname=x.rsqname and y.rolcanlogin = 'f') as RQGroupUsers
FROM gp_toolkit.gp_resqueue_status grs;

In this post, I am sharing a script to find a list of Roles with its associated member information in Greenplum.
Greenplum provides workload management using the concept of Resource Queues so for that DBA should know about Roles and their members.

Using below script, you can get the information of Greenplum Roles and its members/users information.

select
   t.rarolename as RoleName
   ,t.ramembername as RoleMember
from pg_roles pr,
(
	select gra.rarolename, gra.ramembername
	from pg_roles spr,
	gp_toolkit.gp_roles_assigned gra
	where  gra.rarolename = spr.rolname
	and  spr.rolcanlogin = 'f'
) as t
where pr.rolcanlogin =  'f'
	and pr.rolname = t.rarolename
order by t.rarolename, t.ramembername;