RE: dbms_xplan + allstats
- From: Michael Dinh <mdinh@xxxxxxxxx>
- To: "'Chris.Stephens@xxxxxxx'" <Chris.Stephens@xxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 25 Feb 2011 15:56:38 -0800
Have you taken a look at this as an option? SQLT (SQLTXPLAIN) - Tool that helps to diagnose SQL statements performing poorly [ID 215187.1] Michael Dinh NOTICE OF CONFIDENTIALITY - This material is intended for the use of the individual or entity to which it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable laws. BE FURTHER ADVISED THAT THIS EMAIL MAY CONTAIN PROTECTED HEALTH INFORMATION (PHI). BY ACCEPTING THIS MESSAGE, YOU ACKNOWLEDGE THE FOREGOING, AND AGREE AS FOLLOWS: YOU AGREE TO NOT DISCLOSE TO ANY THIRD PARTY ANY PHI CONTAINED HEREIN, EXCEPT AS EXPRESSLY PERMITTED AND ONLY TO THE EXTENT NECESSARY TO PERFORM YOUR OBLIGATIONS RELATING TO THE RECEIPT OF THIS MESSAGE. If the reader of this email (and attachments) is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. Please notify the sender of the error and delete the e-mail you received. Thank you. From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Stephens, Chris Sent: Friday, February 25, 2011 12:38 PM To: oracle-l@xxxxxxxxxxxxx Subject: dbms_xplan + allstats 126.96.36.199 on RHEL I'm working on some SQL that suffers from some horrible cardinality estimate problems due to dummy rows that screw up the columns stats. Everything was going fine this morning but for some reason I can't get an execution plan to show me the a-rows now. I've tried the /*+ gather_plan_stats */ hint. I've tried "alter session set statistics_level=ALL" I've tried "alter system set statistics_level=ALL" I've even tried bouncing the database. select * from table(dbms_xplan.display_cursor('&sql_id','&child_no','allstats')) / ....will not show me the a-rows. Anybody have an hints to help me out? CONFIDENTIALITY NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by email reply.
- dbms_xplan + allstats
- From: Stephens, Chris
- dbms_xplan + allstats