RE: clearing raw devices

That should work just fine. Oracle will only use blocks it has initialized so everything outside that range will be ignored.

Randy Johnson

-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Ujang Jaenudin
Sent: Wednesday, August 29, 2007 3:08 AM To: oracle-l_at_freelists.org
Subject: clearing raw devices

dear all,

i have plan to create a new database to a storage that have ever been used. instead clearing all raw devices by :
dd if=/dev/zero of=/dev/rdsk/c0......

i will clear only some blocks (header block), for save time purpose: dd if=/dev/zero of=/dev/rdsk/c0..... bs=8192 count=100000

is there any issues regarding performance or storage status.... if I clear only header.....???
coz a raw devices may reach 30GB and the sum of them are until 1 TB

i think by using raw, oracle will replace whatever contents on the raw devices...

thanks for the sharing

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regards
ujang
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http://www.freelists.org/webpage/oracle-l Received on Tue Sep 04 2007 - 20:57:07 CDT