Question very, very based on QML...

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  DBA_EXTENTS reports on the number of starting point of measurement (column BLOCK_ID) and the size of the scale in the Oracle (BLOCKS column) blocks.

  I'm trying to combine the lines of the segments of same as if their associated extensions are adjacent.

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  EMP	10	8
  EMP	18	8
  DEPARTMENTS	26	16
  DEPARTMENTS	42	8
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  5016EMP668

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  EMP	10	16
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  Hello

  Here's a way to do that using the analytical SUM function:

  WITH got_grp AS

  (

  SELECT nom_segment, block_id, blocks

  , block_id - SUM (blocks) over (PARTITION BY nom_segment

  ORDER BY block_id

  ) AS the grp

  FROM the data

  )

  SELECT nom_segment

  MIN (block_id) AS grp_block_id

  SUM (blocks) AS grp_blocks

  OF got_grp

  GROUP BY nom_segment, grp

  ORDER BY grp_block_id

  ;

  The data you posted in response to #3:

  Pini Dibask wrote:

  Thanks Frank,.

  If you would care to post CREATE TABLE and INSERT to your sample data and the version of your database, then I could show you exactly.

  The Oracle version is 11.2.0.4

  This is the CREATE TABLE and INSERT statements for the sample data:

  CREATE THE TABLE DATA (NOM_SEGMENT VARCHAR2 (20), BLOCK_ID NUMBER, NUMBER OF BLOCKS);

  INSERT IN DATA VALUES ("EMP", 10, 8);

  INSERT IN DATA VALUES ("EMP", 18: 8);

  INSERT IN DATA VALUES ("DEPARTMENTS", 28, 16);

  INSERT IN DATA VALUES ("DEPARTMENTS", 42, 8);

  INSERT IN DATA VALUES ("EMP", 50, 8);

  INSERT IN DATA VALUES ("EMP", 66, 8);

  is not the same as the data in your first post and the results are not the same, either.

  The fixed difference technique involves lines don't overlap.  In the sample data in response #3, 'DEPARTMENTS' lines overlap, i.e. blocks 42 and 43 belong to two segments.

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• Questions about MDB

  Hi all
  
  This question is just based on what I observed when deploying an MDB and send messages.
  
  Configuration:
  
  Has deployed an MDB on Admin Server.
  
  Comment:
  
  Current consumption = 16
  Consumer high = 16
  Consumer Total = 16
  
  
  Some messages sent and was able to consume these messages through the MDB successfully (no problem)
  
  Cancelled the MDB
  
  Current consumption = 0
  Consumer high = 16
  Consumer Total = 16
  
  The MDB has deployed again
  
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  Consumer high = 16
  Consumer Total = 32
  
  Weblogic server restart
  
  Current consumption = 16
  Consumer high = 16
  Consumer Total = 16
  
  
  Issues related to the:
  1: Why is there 16 consumer... .is this default or we can modify them?
  : 2 16 consumers, what it means at the same time, I have 16 consumer consuming or read to consume messages?
  3: after the redeployment of the MDB, I observe that total consumption number is 32, this just means the total number of available consumer until Let's restart weblogic?
  
  
  
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  Thank you
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  Published by: stacey on 7 Sep 2010 17:44
  
  Published by: stacey on 7 Sep 2010 17:47

  1: Why is there 16 consumer... .is this default or we can modify them?

  It is the default value. See chapter MDB of the Performance Tuning guide to change:

  http://download.Oracle.com/docs/CD/E14571_01/Web.1111/e13814/mdbtuning.htm#PERFM271

  : 2 16 consumers, what it means at the same time, I have 16 consumer consuming or read to consume messages?

  Yes.

  3: after the redeployment of the MDB, I observe that total consumption number is 32, this just means the total number of available consumer until Let's restart weblogic?

  N ° it simply means a total of 32 consumer have been created, 16 of them have been closed when you redeployed, and 16 are open ("current").

  Kind regards

  Tom