One parent table, having 100 child tables. In this scenario we observed that delete and update are taking more memory for preparing a plan
If the system under peak i am getting out of memory issue.
i.e Select on parent table is using memory - 331456 in message context Delete on parent table is using memory - 3746432 in message context
Delete on single child table is using memory - 8800 in message context Select on single child table is using memory - 9328 in message context
For 250 child tables Select on parent table is using memory -810864 in message context Delete on parent table is using memory - 21273088 in message context
I had seen the plans for both delete & select on parent table almost same. why this much of memory increase in message context for delete and update operation.
