There’s no doubt that Adaptive Cursor Sharing is one of the most misunderstood and confusing optimizer areas. It doesn’t help that it is sometimes referred to as Intelligent Cursor Sharing or Bind Aware Peeking. Adaptive Cursor Sharing was introduced in 11g to take care of those pesky bind variables that keep changing. SQLTXTRACT has a section called “Cursor Sharing and Binds,” which can be found at the top of the main report. See Figure 9-1 to remind yourself. The Adaptive Cursor Sharing section is at the bottom left of the screen.
© Stelios Charalambides 2017
Stelios Charalambides, Oracle SQL Tuning with Oracle SQLTXPLAIN, 10.1007/978-1-4842-2436-6_9
9. Adaptive Cursor Sharing
Stelios Charalambides1
(1)New Hampton, New Hampshire, USA
Get Oracle SQL Tuning with Oracle SQLTXPLAIN: Oracle Database 12c Edition, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
