最近时段的所有请求(默认是3天,含当天):
select * from dc_requests_issued order by time desc limit 10;
当前会话:
select * from sessions;
设置方式在这里:
https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/AdministratorsGuide/Monitoring/Vertica/ConfiguringDataRetentionPolicies.htm
所有的监控相关的data collector可以枚举出来:
https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/SystemTables/MONITOR/DATA_COLLECTOR.htm
存储请求信息的监控数据的表叫dc_requests_issued,它对应的data collector 名称叫 RequestsIssued