for bitmap or not...

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• for bitmap or not, that is the question

  Hello my friends tuning.
  
  I'm running Oracle 11.2 (on Solaris 10) for a database very active OLTP, but which is also frequently used to pull reports on the more volatile critical table in the database.
  
  My database has anywhere from 100 to 400 concurrent users.
  Our application (REMEDY) is designed to put 'tickets' in one main table (with about 560 fields that 40 are CLOB).
  The dilemma, I need help is if we put a little map on some low cardinality columns indexes or not.
  And, besides, the number of columns in this table is very low cardinality.
  My fear is that I fear that putting a bitmap on a highly active OLTP table index might decrease the performance of ticket creations (new lines in the table).
  Can or, if I did, I have a job done every night that re-creates the index bitmap on this table?
  But what about performance on the table between the time to rebuild the indexes of BM?
  
  In this case, it is a query that is run on our main table (containing the records of about 6 m and is 16G in size).
  When I look in OEM, I see that he did a scan of full table on this table and in this case, returns only the records of 262.
  Of course, you can deduce that the columns in the predicate clause are very low cardinality (by the names of the columns and the values you want).
  

  SELECT "Main_Ticket"."SHORTTICKETNUMBER"      ,
          "Main_Ticket"."OUTAGESEVERITY"        ,
          "Main_Ticket"."OUTAGESEVERITYTEXT"    ,
          "Main_Ticket"."OUTAGESERVICESLIST"    ,
          "Main_Ticket"."OUTAGESTATUS"          ,
          "Main_Ticket"."OUTAGEOVERALLSTARTTIME",
          "Main_Ticket"."OUTAGEOVERALLENDTIME"  ,
          "Main_Ticket"."CITY"                  ,
          "Main_Ticket"."STATE"                 ,
          "Main_Ticket"."MASTEROUTAGE"          ,
          "Main_Ticket"."GROUPCREATEDBY"        ,
          "Main_Ticket"."GROUPASSIGNEDTO"
  FROM "ARADMIN"."MAIN_TICKET" "Main_Ticket"
  WHERE "Main_Ticket"."OUTAGESEVERITY"<=2
          AND NOT
          (
                  "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'BBSG%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'CIA%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'DESIGNED%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'IHD%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'NABB%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'NCC%'
                  OR "Main_Ticket"."GROUPASSIGNEDTO" LIKE 'NFC%'
          )

  I guess that put the index bitmap on 'OUTAGESEVERITY '.
  Not sure about the GROUPASSIGNEDTO, because it uses the SIMILAR function and may not use the index BM if she had a.
  In this case, an FBI would be better?
  
  Published by: 974632 on February 27, 2013 06:29

  put a bitmap on a table with DML heavy index looks like a very bad idea and I would not even sure if it would help your request (which is the number of values<=2 compared="" to="" the="" total="" number="" of="" rows?="" -="" if="" this="" is="" a="" significant="" amount,="" then="" a="" full="" scan="" is="" propably="" in="" order="" anyway.).="" put="" an="" fbi="" on="" the="" text="" column="" is="" also="" not="" very="" likely="" to="" help="" you="" out,="" especially="" with="" the="" not="" clause.="" it="" would="" be="" much="" easier="" to="" reverse="" the="" logic="" here="" like="" ...="" and="" groupassignedto="" in="" ('group1',="" 'group2'...)="" as="" long="" as="" the="" number="" of="" different="" values="" can="" be="">

  In general, how do you the idea to keep a second copy of this table for reporting? You can create a view, materialized from this table and then create your index bitmap on this MV and run your reports against it. Maybe you could get away with just a drink a day? And the strengthening of this way that you will not lose DML performance against the table real all performance reports. Just an idea

  Bjoern

• Error of Musicmatch jukebox, "skin bitmap is not found."

  When I try to open my musicmatch jukebox I get message "the skin bitmap is not found" C:/programfiles/musicmatchjuebox/skin/dell/cobalt/plrbtns1.bmp.   OR 'there was a problem play.dl or mixer.dll.

  Hello
   
  You did it changes on your machine before the problem?
   
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• updated itunes,-, outlook, for, icloud, would not work, windows, outlook 10, 2016

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  COMODO should you sent a link to download the file 'bundle' containing the intermediate certificates. Who needs to go in the same directory as the certificate of your site. If you are using a control panel, your host can probably help with this process. And if you bought through them, shame on them for not taking care of this for you already!

• the update of firefox 28 for mac does not, the bar just rotates, I can't get the update

  the update of firefox 28 for mac does not, the bar just rotates, I can't get the update. Thank you

  Hello

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• I need to create a table of contents in iPages but I want only one word for the title, not the line of holes. Or, how can I change the contents of the table? Thank you!

  I need to create a table of contents in iPages but I want only one word for the title, not the line of holes. Or, how can I change the contents of the table? Thank you!

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• If Firefox for Android has not been optimized for 4.3?

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• I'm having a problem where Firefox keeps asking for my password to Amazon, even if I tell Firefox NOT to remember this password. In Firefox options, Amazon is clearly recognized as a site for which does not save passwords.

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• Music - part "For You" is not updated

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  Apple TV with tvOS 9.1 (13U85). Model A1625 (32 GB)

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• MobileMe will not let me that post us because that seems to me not having the correct password which I thought to be the same pw for iCloud, but not so much.  How can I me Mail online?

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  Computer: iMac system 10.7.5 Lion

  Story: My drive hard Snow Leopard is dead, but have an external drive on which I have installed Lion, then Mail began requiring a MobileMe password that I do not have.  MobileMe won't let me use Mail because I do not have the correct password which I thought to be the same pw for iCloud, but not so.  How can I me Mail online?

  MobileMe was discontinued on June 30, 2012.  There is no more MobileMe e-mail.  Go to the preferences panel accounts Mail and remove any MobileMe account which is there.  That should get rid of these messages.

  

• A .cab file needed for installation is not reliable. Please check the Cryptographic Services are enabled and that the cab file is valid .__Help! __

  OK, so I need DirectX 0.9 c to the game red alert 3, but I can't on the new directx installed on my computer because of this error
  A .cab file needed for installation is not reliable. Please check Cryptographic Services are enabled and the certificate file is valid.

  have you tried solutions on how to solve this problem posted by mods on the previous posts with a similar problem, but it does not work for me

  help is appreciated, thanks

  Game of automatic encryption Services Cryptography on AutoServices and then try again to install the program. To set the cryptographic on AutoServices, follow these steps:

  1. Start the Administrative Tools utility in control Panel.
  2. Double-click Services.
  3. Click Cryptographic Services, and then click Properties.
  4. Click Automatic for Startup type, and then click Start.

  Reference: http://support.microsoft.com/kb/822798/ and follow all practices listed in the article.

  Man is the only animal that laughs and cries; because it is the only animal that is struck by the difference between what things are and what they could be.

• Nimbuzcalls webdialler for PC are not heard by others

  original title: NIMBUZZCALLS DIALER IS NOT BE INSTALLED PROPERLY

  NIMBUZCALLS WEBDIALLER FOR PC IS NOT INSTALLED CORRECTLY. ALSO I M HAVING SOUND PROBLEMS WHEN I TALK. MY SOUND DOES NOT GO TO THE OTHER END, WHILE I LISTEN TO THE OTHER PERSON WHEN I M USING NIMBUZCALLS. KINDLY GUIDE ME ON THIS ISSUE.
  Thank you
  TIPU

  Hello

  1. you receive an error message when you try to install the program Nimbuzzcalls webdialler ?

  2. what operating system is installed on the computer?

  I suggest you to contact Nimbuzzcalls support on the issue.

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• Error.' c:\docume~'\earl\locals~1\temp. A temporary file needed for initialization could not be created or cannot be written in ' when try to run 16-bit programs in windows xp computer at home.

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  Hi EarlBettencourt,

  You can follow this link & check if the problem persists:

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• Why did did you publish 2.6 of Movie Maker for Vista and not for XP?

  Original title: Movie Maker

  Hey Microsoft, I want to ask U! Why did did you publish 2.6 of Movie Maker for Vista and not for XP?

  Hello

  Movie Maker 2.6 is for Windows Vista users whose computer cannot run the Vista's Movie Maker version. However if you want to upgrade the Movie maker for Windows XP you can try to download Windows live essentials.

  Windows Live Essentials includes seven major programs Windows Live to help you stay in touch with the people you care most, edit and share your photos, blog, browse, search, and help your kids safer online. Programs include Windows Live Messenger, Mail, Writer, photo library, Family Safety, toolbar, and Movie Maker and Outlook Connector, Office Live Add-in and Microsoft Silverlight.

  Check the minimum system requirements for Windows XP.

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  To download Windows Live Essentials refer:

  http://explore.live.com/Windows-Live-Essentials