http://hoopercharles.wordpress.com/2010/10/07/consistent-gets-during-a-hard-parse-a-test-case-to-see-one-possible-cause/ Miscellaneous Random Oracle Topics: Stop, Think, ... Understand Mon, 13 May 2013 14:10:06 +0000 hourly 1 http://wordpress.com/ http://hoopercharles.wordpress.com/2010/10/07/consistent-gets-during-a-hard-parse-a-test-case-to-see-one-possible-cause/#comment-2015 Fri, 08 Oct 2010 09:31:56 +0000 http://hoopercharles.wordpress.com/?p=3464#comment-2015 I could very well be wrong, but I think that Jonathan Lewis’ comment was intended to answer a person’s question about how accesses to the database’s data dictionary could result in physical block reads. He stated: “The data dictionary tables (tab$, ind$, col$ etc.) are just tables like any other table – and blocks from those tables get into the buffer cache.” And then he added a couple of clarification points. He was answering a follow-up question with that reply, rather than the original question that started the OTN thread. I do not think that his comment was intended to suggest that lookups of the data dictionary would/could cause the average of 900 consistent gets per hard parse of the simple SQL statement.

]]> http://hoopercharles.wordpress.com/2010/10/07/consistent-gets-during-a-hard-parse-a-test-case-to-see-one-possible-cause/#comment-2014 Fri, 08 Oct 2010 08:47:35 +0000 http://hoopercharles.wordpress.com/?p=3464#comment-2014 Sir,
In the same thread Jonathan Lewis replies that this consistent gets are due to access to buffers for dictioanry tables as there is no information in row cache for the statement.
What do you think?

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