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Easy Oracle Automation
Chapter 6 - Automatic System Resource Management

Active Session History

SID        NAME                            WAIT_TIME TIME_WAITED
---------- ------------------------------ ---------- -----------
134 - 38   SQL*Net message from client          1179           0
165 - 1    db file sequential read                 0       21406
134 - 38   SQL*Net message from client          1457           0
165 - 1    db file sequential read                 0       10179
134 - 38   log file sync                           0       34164
165 - 1    db file sequential read                 0       10964
167 - 1    log file parallel write                 0       33902
134 - 38   log file sync                           0       56131
165 - 1    db file sequential read                 0       24074
167 - 1    log file parallel write                 0       56167
134 - 38   SQL*Net message from client          4773           0
 

The valuable ASH information is flushed to the disk by the MMON slave to the AWR table. This information is visible through the view dba_hist_active_sess_history.


The above text is an excerpt from:

Easy Oracle Automation
Oracle10g Automatic Storage, Memory and Diagnostic Features

ISBN 0-9745993-6-0

by Dr. Arun Kumar R.
 


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