Oracle datafiles are formatted into blocks. Data is read either physically
by block or an indexed block number. If you compress using zip and then
uncompress, the blocks have not changed. If you reorg the file the blocks
will probably change and the data wont be where Oracle thinks it is.
I wouldn't do it.
-----Original Message-----
Sent: Friday, March 09, 2001 2:31 PM
To: Multiple recipients of list ORACLE-L
Are you talking about a shutdown database, or one started?
(After shutdown) why can I ".zip" the database files on
Netware3, move them around (copy to DAT, CD, backup directories,
etc., then restore them (potentially in another location),
and successfully run the database after?
As far as I recall, the db files work "independent" of the
low level allocation details of the OS I/O system.
I would guess running defrag while db is started is a bad
idea, but if db is shutdown, should be no problem. I'll
(try to) log an iTAR through the NT CSI I have if it is of
sufficient interest.
regards,
ep
On 9 Mar 2001, at 11:35, Smith, Ron L. wrote:
Date sent: Fri, 09 Mar 2001 11:35:38 -0800
To: Multiple recipients of list ORACLE-L
<[EMAIL PROTECTED]>
> I wouldn't think you would want to reorg an Oracle tablespace with an NT
> defrag utility. You would corrupt the data.
...
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