What is the sql waiting for 9000+ sec ??

http://download.oracle.com/docs/cd/B19
306_01/server.102/b14237/dynviews_2094.htm#REFRN30229
Edited by: S2K on Dec 23, 2009 12:09 PM
Edited by: S2K on Dec 23, 2009 12:38 PM

skvaish1 wrote:
Hi,
Sorry I inferred as Simple view. You may increase the PGA to 500M or 1024M which may help you on HASH JOINS but it will be helpful on next session. Existing session will not get affected. Also you have to work on your query to reduce so many FULL table scans. I an not sure if you have updated statistics on the involved tables.
He's spent 9,946 seconds on the CPU without waiting - so sizing of the PGA to avoid spilling workareas to disk is not his problem and messing about with the PGA_AGGREGATE_TARGET is unlikely to help.
The most obvious guess is that the aggregate subquery with full tablescan indicated by the last three lines and the FILTER at line two (id 1) really is happening the 266 thousand times indicated by the ROWS in line 3 (id 2). (And it's happening in memory.)
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
To post code, statspack/AWR report, execution plans or trace files, start and end the section with the tag {noformat}{noformat} (lowercase, curly brackets, no spaces) so that the text appears in fixed format.
"Science is more than a body of knowledge; it is a way of thinking"
Carl Sagan

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>> My final data table contains a two key columns unique key constraint. [unh? one two-column key or two one column keys? Sure wish you posted DDL] I insert data into this table from a daily capture table (which also contains the two columns that make
up the key in the final data table but are not constrained (not unique) in the daily capture table). <<
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>> I don't want to insert rows from daily capture which already exists in final data table (based on the two key columns). <<
MERGE statement; Google it. And do not use temp tables.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

What is the sql waiting for 9000+ sec ??

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