How to check two schemas

Hi all,
In my environment, 2 schemas are exists on same server.
One schema is base version and other is also same as first one with little bit structural changes.
The first schema is performing very well and 2nd schema is working very poorly as performance concerned.
I was rolled back the changes 2nd schema to make it look like 1st schema and still it is performing poorly.
Please provide me suggestions on where to check for the problem?
Thanks,
Sandeep

Hi,
I do not think so schema perform badly?
You meant to say queries running on objects in Schema2 is performing badly?
If yes then look at the tkprof of some of the queries on objects of Schema2.
Most of the time when you do replication like this, there are chances that you miss out the index. But this is not in your case or is it?
Regards
Anurag

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