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12c - Session reading data from UNDO tablespace

edited Sep 30, 2016 5:00AM in SQL Performance (MOSC) 4 commentsAnswered

Hi All,

After 12c upgrade (from 11.2.0.4), I notice some performance issue for few long running queries which reads data from UNDO tablespace. Did any one notice this issue and have any fix / workaround for 12c. Thanks in advance.

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