This is usually a tricky conversation 😉 but WHY are you pulling data into Designer, or rather why are you NOT using in-DB tools instead ?
The WHY answer is usually because you're moving the data somewhere else, because if the input and output are the same Oracle instance then don't use the normal tools.
The why NOT use in-DB is (sometimes) the key to speeding up workflows. You don't mention how many records, but do you need ALL the records, ALL the fields, or a subset that you can summarise (in-DB) before bringing into the normal tools ?
There could be a lot more reasons that I'm missing here, but "keep the data in the database" as much as possible, and only pull out what you need when you need it at the level that you need it (ie not a million records when you only need a monthly summary).
