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Oracle BUG: UNPIVOT returns wrong data for non-unpivoted columns

Some bugs in Oracle’s code are really surprising. Whenever I run into this kind of issue, I can’t help but wonder how nobody else noticed it before. Some days ago I was querying AWR data from...

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Oracle: does PARALLEL_DEGREE_LIMIT really limit the DOP?

Understanding Oracle Parallel Execution in 11.2 is a pain, not because the topic itself is overly complex, rather because Oracle made it much more complicated than it needed to be. Basically, the main...

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