Re: Multiplexed Log Files

Thanks Harel. But   4048992 / 204027056 = 0.019845.. which is rounded to 2%
as dbf suggest.
So I'm not sure if u have answered my question at all..


On Sat, Jun 20, 2009 at 7:34 PM, Harel Safra <harel.safra@xxxxxxxxx> wrote:

> it's simply a matter of rounding.
>
> *629888/**209682432  = 0.0030040094155336771370526644788248*
>
> which is rounded down to 0%.
>
>
> both sets of files contain the same data.
>
>
> Harel Safra.
>
> *
> *
>
>
> **
>
> Amir Gheibi wrote:
>
>  Here is what I got from the OS:
>>
>> >>cd /u02/oradata/LMSUAT
>> [/u02/oradata/LMSUAT][oracle]
>> >>ls -l
>> total 1242384
>> -rw-r-----   1 oracle     oinstall   6930432 Jun 20 19:14 control02.ctl
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 17 12:17 log1.log
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 19 03:00 log2.log
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 20 19:12 log3.log
>> [/u02/oradata/LMSUAT][oracle]
>> >>
>> >>
>> >>
>> >>cd /u03/oradata/LMSUAT
>> [/u03/oradata/LMSUAT][oracle]
>> >>ls -l
>> total 1242384
>> -rw-r-----   1 oracle     oinstall   6930432 Jun 20 19:14 control03.ctl
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 17 12:17 log1.log
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 19 03:00 log2.log
>> -rw-r-----   1 oracle     oinstall   209716224 Jun 20 19:14 log3.log
>> [/u03/oradata/LMSUAT][oracle]
>> >>
>>
>> And still the "bdf" command's output suggests that the /u02 is 3% full and
>> /u03 is 0% full.
>>
>> Could those files under /u03 be sparse files? But then how the
>> multiplexation of log files mitigate the risk of data loss in case of media
>> failure?
>>
>> Thanks.
>> ~ Amir Gheibi
>>
>> On Fri, Jun 19, 2009 at 3:09 PM, Mathias Magnusson <
>> mathias.magnusson@xxxxxxxxx <mailto:mathias.magnusson@xxxxxxxxx>> wrote:
>>
>>    Why not also list the size of the files as the DB and as the
>>    operating system knows it?
>>
>>    Maybe also a "find /u02" and "find /u3" to verify that all you
>>    have there is logfiles?
>>
>>    Mathias
>>
>>
>>    On Fri, Jun 19, 2009 at 8:26 AM, Amir Gheibi <gheibia@xxxxxxxxx
>>    <mailto:gheibia@xxxxxxxxx>> wrote:
>>
>>        Hi listers,
>>
>>        I have a HP-UX box with Oracle 10gR2 installed in it. I
>>        created a Database and enabled auto archive. The log files and
>>        control files are multiplexed and live in different disks.
>>
>>
>>        *>>sqlplus / as sysdba*
>>        *
>>        *
>>        *SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 19
>>        14:07:15 2009*
>>        *
>>        *
>>        *Copyright (c) 1982, 2005, Oracle.  All rights reserved.*
>>        *
>>        *
>>        *
>>        *
>>        *Connected to:*
>>        *Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 -
>>        64bit Production*
>>        *With the Partitioning, OLAP and Data Mining options*
>>        *
>>        *
>>        *SQL> COLUMN GROUP# FORMAT 9;*
>>        *SQL> COLUMN MEMBER FORMAT a30;*
>>        *SQL> COLUMN TYPE FORMAT a10;*
>>        *SQL> SELECT GROUP#, MEMBER, TYPE, IS_RECOVERY_DEST_FILE FROM
>>        V$LOGFILE;*
>>        *
>>        *
>>        *
>>        *
>>        *GROUP# MEMBER                         TYPE       IS_*
>>        *------ ------------------------------ ---------- ---*
>>        *     1 /u02/oradata/LMSUAT/log1.log   ONLINE     NO*
>>        *     1 /u03/oradata/LMSUAT/log1.log   ONLINE     NO*
>>        *     2 /u02/oradata/LMSUAT/log2.log   ONLINE     NO*
>>        *     2 /u03/oradata/LMSUAT/log2.log   ONLINE     NO*
>>        *     3 /u02/oradata/LMSUAT/log3.log   ONLINE     NO*
>>        *     3 /u03/oradata/LMSUAT/log3.log   ONLINE     NO*
>>        *
>>        *
>>        *6 rows selected.*
>>        *
>>        *
>>        *
>>        *
>>        What I don't understand is the usage of the disk in /u02 and /u03.
>>
>>        Here is a partial outcome of the "*bdf*" command:
>>
>>        */dev/vg01/lvol1    209682432 4260600 203820416    2% /u01*
>>        */dev/vg02/lvol1    209682432 4048992 204027056    2% /u02*
>>        */dev/vg03/lvol1    209682432  629888 207419328    0% /u03*
>>        */dev/vg04/lvol1    209682432 7513480 200589552    4% /u04*
>>        *
>>        *
>>        /u02 is filled 2% but not /u03.
>>        Don't they contain the same copy of the log files?
>>
>>        By the way, there is nothing other than those log files in
>>        /u02 and /u03.
>>
>>        Thanks.
>>
>>        ~ Amir Gheibi
>>
>>
>>
>>

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