Hi,

One of my friend is having a peculiar problem and will
appreciate any help from this group.

Is it possible for 2 symbolic links to point to the
same raw device and be able to create both datafiles ?
The following is the situation, experienced by him:

There is a tablespace having (staging_d_03.dbf) which
is a symbolic link to a raw device (/dev/vg02/rlvol19)
. This datatafile is a part of tablespace STAGING_D.

By mistake, another link was created (appusr_d27.dbf)
pointing to the same raw device.

17 May  7 17:01 staging_d_03.dbf -> /dev/vg02/rlvol19
17 May 15 15:09 appusr_d27.dbf   -> /dev/vg02/rlvol19

Now, he has been able to add this (appusr_d27.dbf) to
another tablespace (APP_USERS) WITHOUT using the
"reuse" clause . Is it possible ? 

(I do not have any raw device to test this, but tried
creating symbolic links to the same file (on
filesystem) and was,as expected, unable to add the
existing datafile to another tablespace ) 

Further, he took the dump of the control file (alter
database backup controlfile to trace;) and it is
showing both the datafiles. 

He actually does not need the staging datafile any
more, so can he just go ahead and drop the datafile
(by recreating the STAGING_D tablespace ? What must be
happening ? Is it possible that the file has been
overwritten/corrupt ?

Thanks

Sukumar Kurup




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