----- Original Message -----
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
Sent: Friday, May 10, 2002 5:03 AM


> Hi ALL,
>
> 1.
> How do I get know memory usage by karnel,application
> programs,Filesystem Cache etc in SunOS 5.6 . I do not
> have the RMC package installed in my m/c
>
I think that you can use /usr/proc/bin/pmap pid

This will display the memmory map for a process.  Detailing shared memory,
shared libraries, code, etc.

Here you have an example:
25431:  ora_lgwr_PRUE73
00010000   8312K read/exec         /u01/app/oracle/product/7.3.4/bin/oracle
0083D000     76K read/write/exec   /u01/app/oracle/product/7.3.4/bin/oracle
00850000    140K read/write/exec     [ heap ]
80000000   6440K read/write/exec/shared  [ shmid=0x578 ]
8064A000      4K read/shared        [ shmid=0x578 ]
8064B000    160K read/write/exec/shared  [ shmid=0x578 ]
80673000      4K read/shared        [ shmid=0x578 ]
80674000  40000K read/write/exec/shared  [ shmid=0x578 ]
EF5A0000     12K read/exec         /usr/lib/libmp.so.2
EF5B2000      4K read/write/exec   /usr/lib/libmp.so.2

> 2.
> How do I know if the ORACLE is using Raw/UFS ?
>
Check in dba_data_files (dba_temp_files if you're using temporary tablespace
Oracle 8i onwards), v$controlfile , v$logfile
the locations of the files. After this, go and take a look to these files
with
the comand "file":

oracle:/u01/oradata/RAW81> file raw_data01.dbf
raw_data01.dbf: character special (32/39)

oracle:/u02/oradata/PRUE73> file data1_01.dbf
data1_01.dbf:   data

> 3.
> If I set _filesystemio_options='directIO' instead of
> 'async' will that save memory consumption and improve
> performance  ?

It depends on the tipe of datafiles you're using.
If your database is on FS, and you mount your FS with forcedirectio option,
you can set set _filesystemio_options='directIO'
and you'll be using direct io for the FS datafiles. This will save you
memory and will boost your performance.
If you're on Raw devices you should use Async I/O (KAIO in solaris to be
precise)


HTH
Greetings
Diego Cutrone

>
> Any suggestion ...Thanks in advance
>
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Author: Diego Cutrone
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