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buffer cache [message #464437] Thu, 08 July 2010 01:55 Go to next message
dalu
Messages: 7
Registered: June 2010
Junior Member
can anyone help me ,which bgprocesses reads the data from datafile to the buffer cache in sga .

Thanks in advance

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Re: buffer cache [message #464443 is a reply to message #464437] Thu, 08 July 2010 02:07 Go to previous messageGo to next message
ramoradba
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Registered: January 2009
Location: AndhraPradesh,Hyderabad,I...
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Why not reading oracle documents?
read the concepts you can easily understand.and one more it is not bg/back ground process..its a memory process.

sriram Smile

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Re: buffer cache [message #464444 is a reply to message #464443] Thu, 08 July 2010 02:08 Go to previous messageGo to next message
ramoradba
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or search for the oracle architechture as keyword on Internet.

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Re: buffer cache [message #464457 is a reply to message #464437] Thu, 08 July 2010 02:28 Go to previous messageGo to next message
Michel Cadot
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Quote:
which bgprocesses reads the data from datafile to the buffer cache in sga .

None (unless one needs it).

Database Concepts

Regards
Michel

[Updated on: Thu, 08 July 2010 02:29]

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Re: buffer cache [message #464464 is a reply to message #464444] Thu, 08 July 2010 02:37 Go to previous messageGo to next message
dalu
Messages: 7
Registered: June 2010
Junior Member
"DBWR is responsible for writing dirty data blocks from the database block buffers to disk." this part is clear to me ,

but the reverse 'which process is responsible for reading the data block from disk to database block buffers in case the db block buffer is not having the data block.'

i went through some website there it is written "the process" -- which process i could not find out . if any link is provided it would be helpful.

Thanks in advance
dalu

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Re: buffer cache [message #464470 is a reply to message #464464] Thu, 08 July 2010 02:44 Go to previous message
Michel Cadot
Messages: 68653
Registered: March 2007
Location: Nanterre, France, http://...
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The dedicated/shared server associated to your session is the process that reads from file.

The link was already provided, the section is the first one before the one you quote: Server Processes.

Regards
Michel

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