Re: REDO LOG Concepts

From: Alexander Fatkulin <afatkulin_at_gmail.com>
Date: Thu, 17 May 2007 23:05:57 +1100
Message-ID: <49d668000705170505o7926ca2crbb563d7cb6b8ace@mail.gmail.com>

Deepak,

generally rm does exactly this - an unlink() system call to unlink file from the inode.

LGWR holds an open file descriptor after open - after that LGWR doesn't really care whenever file is linked to the inode or not.

The actual delete happens when there is no more link(-s) and no open file descriptors.

On 5/17/07, DBA Deepak <oracle.tutorials_at_gmail.com> wrote:
> Hi Alexander,
>
> I do not think UNIX removes the directory entry immediately. Otherwise how
> would it access the REDO logs by their paths.
>
> What might be happening is UNIX is marking it as deleted (may be using a
> flag or so). Please do correct me if am wrong.
>
> Deepak
>

-- 
Alexander Fatkulin
--
http://www.freelists.org/webpage/oracle-l

Received on Thu May 17 2007 - 07:05:57 CDT