_rowsets_enabled – Apply patch and use the default

I while back I blogged about issues with “rowsets“, a new Oracle 12c feature which unfortunately had two known wrong result (WQR) bugs:

What does “rowsets” actually mean?

I’d like to thank Sankar, our Development manager for providing this explanation which sheds some light on how important this feature actually is:

“Rowsets is a SQL execution performance enhancement introduced in Oracle RDBMS release 12.1 and further extended in a future release of the Oracle Database.

Prior to 12.1, data processing in the SQL layer were

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