Oracle-L: RE: _DB_FILE_DIRECT_IO

From: Muqthar Ahmed <Muqthar.Ahmed_at_decoratetoday.com>
Date: Tue, 21 Oct 2003 06:24:25 -0800
Message-ID: <F001.005D3DD3.20031021062425@fatcity.com>

Lee,

If you would like to see the default value for _DB_FILE_DIRECT_IO_COUNT, run the following query with SYSDBA privileges:

col Parameter for a50
col "Session Value" for a20
col "Instance Value" for a20

select a.ksppinm "Parameter",
       b.ksppstvl "Session Value",
       c.ksppstvl "Instance Value"
  from x$ksppi a,
       x$ksppcv b,
       x$ksppsv c
 where a.indx = b.indx

and a.indx = c.indx
and a.ksppinm like '_db_file%'
order by ksppinm
/

Parameter                                          Session Value        Instance Value
-------------------------------------------------- -------------------- --------------------
_db_file_direct_io_count                           1048576              1048576
_db_file_noncontig_mblock_read_count               11                   11

SQL> Muqthar Ahmed
DBA -----Original Message-----
Sent: Tuesday, October 21, 2003 8:16 AM
To: Multiple recipients of list ORACLE-L

Hi,

9.2.0.3 AIX 5L Anyone used this in 9i ??

Can you set this as you would a normal parameter (ie. as I did in 8i with undocumented parameters).

Sorry if this is a stupid question but I am still getting my head around this 9i stuff.

Plus don't worry, this is not Production I am playing but a test instance. I thought I would ask first as I would rather not recreate this.

Cheers

Lee

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Author: Robertson Lee - lerobe
INET: lerobe_at_acxiom.co.uk

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Author: Muqthar Ahmed
INET: Muqthar.Ahmed_at_decoratetoday.com

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RE: _DB_FILE_DIRECT_IO_COUNT