troubleshooting Question

explain plan for MERGE

Avatar of royjayd
royjayd asked on
Oracle Database
12 Comments2 Solutions1329 ViewsLast Modified:
hi experts

I ran a simple explain plan for my merge statement

explain plan for merge into product p
using product_changes pc ON (p.product_id = pc.product_id)
when matched then
update set p.product_type_id = pc.product_type_id, p.name = pc.name,p.description = pc.description,p.price = pc.price
when not matched then --new rows
insert (p.product_id,p.product_type_id, p.name,p.description,p.price) values (pc.product_id,pc.product_type_id, pc.name,pc.description,pc.price);


select * from table(dbms_xplan.display)

the result is attached.

Can anyone please explain me how i can improve the performance.
thanks
merge-explain-plan.bmp
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