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B-Tree or Bitmap Indexes [message #128866] Thu, 21 July 2005 00:21 Go to next message
milind_sri
Messages: 70
Registered: February 2005
Location: Pune
Member
Hi Gurus,

I wanted to know which type of Index is better in what situations like in which scenario i should use B-Tree index and in which scenario i should use bitmap index.

I want this info in detail as my conecpts are not getting clear after reading the books and manual.

I want your suggestions in relevance to practical scenarios where you got better performance of B-Tree or Bitmap Indexes from the view of performance tuning of a query.

Pls. provide me with such practical scenarios where you people have undergone the performance situations.

Thanks in advance.

Milind.
Re: B-Tree or Bitmap Indexes [message #128872 is a reply to message #128866] Thu, 21 July 2005 00:39 Go to previous messageGo to next message
girish.rohini
Messages: 744
Registered: April 2005
Location: Delhi (India)
Senior Member
HI

I think the below links will make it even more clear..

http://www.stanford.edu/dept/itss/docs/oracle/9i/server.920/a96524/c11schem.htm#3239
http://www.psoug.org/reference/indexes.html

Regds
Girish

[EDIT]: Small typo

[Updated on: Thu, 21 July 2005 00:40]

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Re: B-Tree or Bitmap Indexes [message #128885 is a reply to message #128872] Thu, 21 July 2005 01:38 Go to previous messageGo to next message
milind_sri
Messages: 70
Registered: February 2005
Location: Pune
Member
Hi Girish,

Thanks for your prompt response.

Milind.
Re: B-Tree or Bitmap Indexes [message #128996 is a reply to message #128866] Thu, 21 July 2005 08:15 Go to previous messageGo to next message
smartin
Messages: 1803
Registered: March 2005
Location: Jacksonville, Florida
Senior Member
In very very very general, if you are doing dml, you want btree, if not, you want bitmap.

Interesting site Girish, I'll have to check it out some more.
Re: B-Tree or Bitmap Indexes [message #129001 is a reply to message #128996] Thu, 21 July 2005 08:25 Go to previous message
Mahesh Rajendran
Messages: 10707
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
>>Interesting site Girish, I'll have to check it out some more.

martin,
If you are referring to psoug url,
it is the library maintained by Daniel Morgan (C.D.O.S)~~.
The library is a very handy one.
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