Subbu wrote:

> Could anyone tell me the overheads involved in inserting/updating
> records using MERGE statement and normal DML statements if any.
As opposed to doing the same work with pl/sql?

Run some tests and benchmark it against your system. Measurements of
overhead will be more accurate that way.

FWIW, I use merge statements hundreds of times per day (in jobs), and it
works fine for my needs.