Find tables with duplicate keys on Oracle DB/SAP db

Hello SAP experts,

does there exists a script/check function in SAP/oracle that identifies tables, that containing duplicate keys (even if it takes xx hours/days it would be OK)?

(just FYI: duplicate keys are avoiding creating indexes - so I would first been alert once a index needs to be created)

When I test it on a SAP system and run later validate structure check, there is no warning posted into the logs.

Here I create a test table and add duplicate values:

But analyze task validate structure (from Br*Tools/DB13) does not detect any issue.

Many thanks for your help.

Best regards

Carlos Behlau