@SuryaYanamandra

Obj-Open will throw an exception if records is not found during lookup, unlike Obj-Browse.

From the error message, it appears :

1. You're most likely querying a custom DB table.
2. Either the values you passed to your query is wrong, or the instance you are trying to open up is not on that DB table yet.

Again, normally exception will not cause slowness.

You need to look at PEGA alerts or run PAL (if allowed) to narrow down the root cause of slowness.

Note that in most of slowness issue in production is caused by unoptimized DB query, or when you are trying to retrieve too much information from DB.

If you need to debug slowness issue in production, you need to first narrow it down to a spefic area (e.g. a particualr UI, report) of your application. Talk to your production users for additional details, also start looking at Pega alert.

Thanks