Earlier today, I was answering a question where someone proposed as a possible solution the idea of flushing the Shared Pool to solve a problem with one SQL statement. I find this to be bad advice. As I stated in my reply, why kill all end user’s performance to solve one guy’s problem? My answer was that if we needed to remove that SQL statement from the Shared Pool, let’s flush the cursor. This ability has been around since Oracle 10g. And Oracle employee blogged the details here:
https://blogs.oracle.com/mandalika/entry/oracle_rdbms_flushing_a_single
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The capability exists in Oracle 11g. I assume this is still available in 12c as well. I haven’t checked. But I wonder if it is needed in Oracle 12c with the adaptive optimizer new features?
