RE: Disk failover

        Why would someone tell you that?         

        If that were true, then failover systems would not work.

Real "failover" systems don't failover the disk since they have a CFS...the only thing that fails-over is the database service...but I digress :-)

The answer is that Oracle knows nothing about physical disk. If you unplug a disk, stick it into another system and the file paths are the same once the filesystem is mounted, Oracle is none the wiser...and this is good. Oracle is an RDBMS...a relational database is the CONTENTS of files, not files themselves and ceratainly not low-level disk or disk blocks.

Oracle customers will benefit from all the attention Oracle pays to manipulating file CONTENT...that is the role of a database server ...         

        Jared                           

        On 10/13/05, Mike Schmitt <mschmitt_at_uchicago.edu> wrote:

                Hi All,                 

                Can someone please confirm for me the ability to unmount a set of disks on

                Server A, mount those same disks onto Server B (Same O/S, unique named

                disks), and bring up the database on server B. I know I have done this

                before, but I was just in a meeting where someone told me that you can't do

                this with Oracle, and that they tested it. This is with 9i by the way                 

                Thanks                 

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	Jared Still
	Certifiable Oracle DBA and Part Time Perl Evangelist
	

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