Re: Converting from raw to filesystem
- From: "Radoulov, Dimitre" <cichomitiko@xxxxxxxxx>
- To: <fuadar@xxxxxxxxxxxxxx>
- Date: Wed, 8 Feb 2006 18:04:12 +0100
thisis what i get after the plain dd
dd if=/dev/rvdsystem01
of=/usr/local/oracle/database/tempdb01/system01.dbf
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01122: database file 1 failed verification check
ORA-01110: data file 1: '/usr/local/oracle/database/tempdb01/system01.dbf'
ORA-01251: Unknown File Header Version read for file number 1
I've always used the bs option(bs=1048576 in my case):
bs=n Set both input and output block sizes to n bytes,
superseding ibs= and obs=. If no conversion other than
sync, noerror, and notrunc is specified, each input
block will be copied to the output as a single block
without aggregating short blocks.
Example:
dd if=/dev/vx/rdsk/... of=/u01/oracle/... bs=1048576
And I found this on MetaLink:
ORA-1251
Text: Unknown File Header Version read for file number %s
---------------------------------------------------------------------------
Cause: Read of the file header returned a record but its version cannot be
identified. Either the header has been corrupted, or the file is not a valid
database file.
Action: Have the operating system make the correct file available to the
database, or recover the file.
If you have a backup please restore the backup and retry the operation.Make
sure you have specified like the following:
dd if=/dev/xxx of=/a/spdevs04/ibmfs/osupport/yyy bs=4096 skip=1
Reference:
===========
Note:1027958.6 MPP: (UNIX) COPYING RAW DEVICE TO FILE SYSTEM USING DD
COMMAND
Regards,
Dimitre
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