Working with FM

Oracle8i Master Index: D
press on DI
Looking for dirty buffers
found link dirty buffer (Concepts)

and here is an excerpt:

The buffers in the cache are organized in two lists: the write list and the
least recently used (LRU) list. The write list holds dirty buffers, which
contain data that has been modified but has not yet been written to disk.
The least recently used (LRU) list holds free buffers, pinned buffers, and
dirty buffers that have not yet been moved to the write list. Free buffers
do not contain any useful data and are available for use. Pinned buffers
are currently being accessed.



Gints Plivna
IT Sist�mas, Mer�e�a 13, LV1050 R�ga
http://www.itsystems.lv/gints/



                                                                                       
                                                 
                      Abdul Aleem                                                      
                                                 
                      <dmit@beaconhouse        To:       Multiple recipients of list 
ORACLE-L <[EMAIL PROTECTED]>                    
                      .edu.pk>                 cc:                                     
                                                 
                      Sent by:                 Subject:  what is meant by dirty 
buffers                                                 
                      [EMAIL PROTECTED]                                                 
                                                 
                                                                                       
                                                 
                                                                                       
                                                 
                      2002.05.13 14:43                                                 
                                                 
                      Please respond to                                                
                                                 
                      ORACLE-L                                                         
                                                 
                                                                                       
                                                 
                                                                                       
                                                 




Hi,

In a book I read that DBWO writes dirty data buffers from data buffer cache
to the data files. I would appreciate if someone could kindly clear my
confusion.

What is meant by dirty data buffers? If these are dirty (not good/healthy)
why to write to these to data files?

TIA!

Aleem

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