ASM or not?

Hi all!
I know that ASM is a mature product, features rich and much appreciated by DBAs.
I understand that for best throughput, one would be better to use ASM...
(I also understant that raw device mapping is the best configuration for performance - BUT I definitely would not recommend using RDM for the management complexity it adds..).
It does NOT seems simple to implement ASM here because of responsabilities (sysadmins vs dba).
So my question are (not RAC related):
1- Does anybody actually measured the difference in performance (between using ASM and NOT using ASM, i.e. using O/S filesystem)?
2- I know it is adviced as a best practices (for best throughput) to separate online redo logs and data files - but is realy that bad NOT to do it?
Otherwise said, how detrimental is it to merge logs with datafiles.
Any thoughts/references are welcome...
Jocelyn

Hi ,
ASM has few more additional feature which make it better than rest and available in 12C,
+ Priority rebalance --->> Now ASM will do rebalance depending on file type ,rather file number
+ Failgroup_repair_time -->> Similar to disk_repair_time ,it is failgroup
+ In true sense,disk online replace without impacting normal operation -->> Disk get replace on same slot of that diskgroup ,not on n+1th slot
+ Even read -->> Read will happen from any allocation
+ backing up additional blocks at ASM level. -->> backing up more asm metadata blocks of each disk which is in use in ASM within that disk.
+ scrubbing --->> Automatically detects logical corruption and try to fix it depending of few things at ASM level.
Even with same characteristics disks ,under different disk controller ,with stripping will have better performance comparing filesystem.
though ,it is not an apple to apple comparison.
With Priority rebalance ,your online redo logfile will be rebalance earlier that datafiles and availability will be faster .
--- These make ASM a better choice ..
Regards,
Aritra

Similar Messages

ASM install not RAC aware

SPARC:
installed 11g clusterware using crs user, oinstall and dba group,
then install 11g ASM using oracle user, but it does not show RAC option.
ASM install not RAC aware if not use same user?
Thanks.

I'm not sure if you're talking about creating an ASM instance? The ASM software install is the same as the Database install. Oracle recommends running ASM from a separate Home which would require a separate Oracle database install.

How to check where DB uses ASM or not.

I do not know customer Oracle DB environment well.
Customer uses oracle 11g on win2008R2 and OEM is not installed.
How could I know whether that DB uses ASM or not ?

Hi
Thanks for reply.
There is no record in rpd in cache manger.
But I run the report(my cache is enable)
still I have no record in my cache.
so how i know..
1. my cache having the data.
2. Query is going to cache/db
3. cache is purged.

To ASM or not to ASM

Hello,
Our company is planning to migrate from Oracle 9.2 to 10.2 and we will be moving from Solaris OS to RH Linux. We also want to go from single-instance to RAC. Of the 3 storage solutions ASM, OCFS, or NFS, which is most recommended????
Thanks for any feedback.

We recently migrated our server from OCFS2 to ASM, though ASM adds an overhead but in long term is a better storage management tool. ASM provides better I/O is by evenly distributing the data across disk groups, with ASM in addition handling disk mirroring and the creation of mirror groups and failure groups is easier. But you can also use NFS/OCFS2 in conjuction to ASM. OCFS2/NFS for oracle software and RAC software, ASM for datafiles and archivelogs. Though you will lose visibility from UNIX prespective and no more cd to directory and accidently running rm, ( you can do that in asm but not obvious have to login using asmcmd).
Here is useful link for several whitepaper on ASM by oracle (you might already know this but anyway)
http://www.oracle.com/technology/products/database/asm/index.html

Asm does not start on node2

I am trying to build a oracle rac as a test environment at home
I have three desktops
a) node1
b) node2
c) openfiler
I am using Jeffrey hunter's website for instructions on Oracle Rac 10g install using openfiler for iscsi
node1,node2 is configured for 10.2.0.1
When I do the create database with dbca I am getting a message
unable to start asm on node2
The change that I made in the install is as follows
node 1 has two network cards eth0-100 mbps - public ip address and eth1-1Gbit private ip address
node 2 has two network cards eth1-100 mbps - public ip address and eth0- 1gbit private ip address
when linux install was done it automatically assignmed eth0 to the 1gb nic card on node 2
Do you think that this is the issue ?
I post below some part of the asm alert log of node2
LICENSE_SESSIONS_WARNING = 0
Interface type 1 eth1 192.168.2.0 configured from OCR for use as a cluster interconnect
WARNING 192.168.2.0 could not be translated to a network address error 1
Interface type 1 eth0 192.168.1.0 configured from OCR for use as a public interface
WARNING: No cluster interconnect has been specified. Depending on
the communication driver configured Oracle cluster traffic
may be directed to the public interface of this machine.
Oracle recommends that RAC clustered databases be configured
with a private interconnect for enhanced security and
performance.

I tried various methods but it did not work.
so to resolve the issue since this is a test environment at home I decided to reinstall the whole setup again.
Of course when I installed the Linux o/s (Centos 5.3) the eth0 was detected as the 1Gbps card and the eth1 was detected as 100mbps card of the motherboard.
So I swapped them by de-activating them and logging in as root and opening these files
vi /etc/sysconfig/network-scripts/ifcfg-eth0
vi /etc/sysconfig/network-scripts/ifcfg-eth1
and swapping the lines
HWADDR=<mac address>
from both files.
I activated the cards again and voila - the eth0 is now the 100mbps card and the eth1 is the 1Gbps card
I am having a small doubt with the documentation of Jeffrey Hunter
the doubt is
At the start of the documentation in the o/s network config section
on linux2 he specifies
eth0 -IPv4 Address: 192.168.1.101/ Prefix (Netmask): 255.255.255.0
eth1:-IPv4 Address: 192.168.2.101/ Prefix (Netmask): 255.255.255.0
When vipca fails
His documentation is as follows
quote
[root@linux2 ~]# /u01/app/crs/bin/oifcfg setif -global eth0/192.168.1.0:public
[root@linux2 ~]# /u01/app/crs/bin/oifcfg setif -global eth1/192.168.2.0:cluster_interconnect
[root@linux2 ~]# /u01/app/crs/bin/oifcfg getif
eth0 192.168.1.0 global public
eth1 192.168.2.0 global cluster_interconnect
Now - my question is why the difference between
eth0 -IPv4 Address: *192.168.1.101*/ Prefix (Netmask): 255.255.255.0
eth1:-IPv4 Address: *192.168.2.101*/ Prefix (Netmask): 255.255.255.0
and
[root@linux2 ~]# /u01/app/crs/bin/oifcfg setif -global eth0/192.168.1.0:public
[root@linux2 ~]# /u01/app/crs/bin/oifcfg setif -global eth1/192.168.2.0:cluster_interconnect
Jeffrey hunter's documentation link is below
===========================
http://www.idevelopment.info/data/Oracle/DBA_tips/Oracle10gRAC/CLUSTER_12.shtml
Please help me out with this issue - Thanks a lot....
Edited by: user8523360 on Jan 14, 2010 8:22 AM
My Host file is as follows
===============
# Public Network - (eth0)
192.168.1.100 linux1
192.168.1.101 linux2
# Private Interconnect - (eth1)
192.168.2.100 linux1-priv
192.168.2.101 linux2-priv
# Public Virtual IP (VIP) addresses - (eth0:1)
192.168.1.200 linux1-vip
192.168.1.201 linux2-vip
# Private Storage Network for Openfiler - (eth1)
192.168.1.195 openfiler1
192.168.2.195 openfiler1-priv
Edited by: user8523360 on Jan 14, 2010 8:26 AM

ASM instance not shown in tnsnames.ora

Hi,
Currently I have an Oracle 11g database on linux with ASM installed, or at least that's what I can tell from querying v$logfile and v$datafile views. But in my tnsnames.ora and listner.ora I only see the db instance with no ASM instance. If I goto $ORACLE_BASE/admin, I see ASM and orcl. But under $ORACLE_BASE/admin/+ASM/pfile, I see no files.
This is a vm image by the way. The database is running fine as far as i can tell. My question is why there is no ASM entries in the above files?
Thanks for the help.

ASM instance is not used by applications users. It is used by Oracle which can see it, so you do not need any entry in tnsnames.ora for ASM instance. Also ASM instance usage init.ora file from $ORACLE_HOME/dbs directory, so you do not see any file in admin/pfile directory.
Regards

URGENT HELP: ASM instance not able to start....

ASM version: 11.1.0.6
RAC: 2 node cluster.
Scenario:
CRS comes up fine with no issues but it does NOT start ASM auto. So thats fine.
So I go to ASM sqlplus and issue:
SQL> startup mount;
ORA-29702: error occurred in Cluster Group Service operation
SQL>
ASM LOG file says:
5:20:17 2011
MMAN started with pid=11, OS id=11019
Fri Jul 15 15:20:17 2011
DBW0 started with pid=12, OS id=11021
Fri Jul 15 15:20:17 2011
LGWR started with pid=13, OS id=11023
Fri Jul 15 15:20:17 2011
CKPT started with pid=14, OS id=11030
Fri Jul 15 15:20:17 2011
SMON started with pid=15, OS id=11032
Fri Jul 15 15:20:17 2011
RBAL started with pid=16, OS id=11034
Fri Jul 15 15:20:17 2011
GMON started with pid=17, OS id=11036
Fri Jul 15 15:30:17 2011
USER (ospid: 10956): terminating the instance due to error 29702
Instance terminated by USER, pid = 10956
CRS log files do not indicate much:
0.254: [ CRSRES][1509878080][ALERT] Remote start for `ora.sister-ora-pro-2.ORAPRO_SISTER-ORA-PRO-2.lsnr` failed on member `sister-ora-pro-2`
2011-07-15 14:32:20.308: [ CRSRES][1507776832] startRunnable: setting CLI values
2011-07-15 14:32:20.308: [ CRSRES][1094175040] startRunnable: setting CLI values
2011-07-15 14:32:20.369: [ CRSRES][1507776832] Attempting to start `ora.sister-ora-pro-1.gsd` on member `sister-ora-pro-1`
2011-07-15 14:32:20.369: [ CRSRES][1094175040] Attempting to start `ora.sister-ora-pro-1.ons` on member `sister-ora-pro-1`
2011-07-15 14:32:21.662: [ CRSRES][1507776832] Start of `ora.sister-ora-pro-1.gsd` on member `sister-ora-pro-1` succeeded.
2011-07-15 14:32:22.920: [ CRSRES][1094175040] Start of `ora.sister-ora-pro-1.ons` on member `sister-ora-pro-1` succeeded.
This is the content of the ASM init file:
# Pools
large_pool_size=12M
asm_diskgroups='DAT1','DAT2','DAT3','DAT4','IDX1','IDX2','IDX3','IDX4','SYS1','SYS2','SYS3','SYS4','FLSH'
+ASM2.instance_number=2
+ASM1.instance_number=1
any suggestions ?

some snippets from LMON trace file:
*** 2011-07-15 17:07:51.656
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.656
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.656
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.656
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.657
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.657
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.657
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.657
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.657
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.657
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.658
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.658
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.658
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.658
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.658
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.658
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.658
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.658
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.658
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.658
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.659
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.659
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.660
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.660
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.660
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.660
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.660
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.660
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjxgmmeminfo: can not get mem(1)'s info - (8)
kjxgmjoin: potential nested reconfig
*** 2011-07-15 17:07:51.660
kjxgmrcfg: Reconfiguration started, type 1
kjxgmcs: Setting state to 0 0.
*** 2011-07-15 17:07:51.660
Name Service frozen
kjxgmcs: Setting

ASM Disk not found

Hi,
I am installing the Grid Infrastructure for a cluster (11.2). In the installer screen where an ASM disk group should be chosen, no disk appears.
But a disk appears if a execute "oracleasm listdisks" in the command line. Any idea?
The "oracleasm status" informs the disk is not mounted. Is that the problem?

Hi David:
uname -a
Linux cwb02efnora04.keybank.com 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
rpm -qa|grep oracleasm
oracleasm-support-2.1.3-1.el5
oracleasmlib-2.0.4-1.el5
oracleasm-2.6.18-164.el5-2.0.5-1.el5
lsmod|grep oracle
oracleasm 84136 1
grep oracleasm /proc/filesystems
nodev oracleasmfs
oracle@cwb02efnora04:/u01/app/oracle>df -ha |grep oracleasm >a
oracleasmfs 0 0 0 - /dev/oracleasm
ls -l /dev/oracleasm/disks/
total 0
brw-rw---- 1 oracle dba 120, 17 Nov 27 12:53 QDATA1
brw-rw---- 1 oracle dba 120, 33 Nov 27 12:53 QDATA2
brw-rw---- 1 oracle dba 120, 49 Nov 27 12:53 QDATA3
brw-rw---- 1 oracle dba 120, 97 Nov 27 13:33 QDATA4
brw-rw---- 1 oracle dba 120, 113 Nov 27 13:34 QDATA5
brw-rw---- 1 oracle dba 120, 65 Nov 27 12:53 QFLASH1
brw-rw---- 1 oracle dba 120, 81 Nov 27 12:53 QFLASH2
~
thank you so much
Susan

ASM Disks not appearing

I am installing Oracle RAC 10.2 on an EM64-T box, RedHat Linux 4, using a shared MSA1000 SAN for the shared storage.
I have installed CSS (and it is running correctly), and have downloaded and installed the ASM libraries and Oracle.
From the command line I can do an "oracleasm createdisk VOL1 /dev/sda2", then do a "listdisks" and see the device (VOL1) on BOTH nodes in my RAC cluster.
Using DBCA, however, when I try to manage ASM it does not show the device (VOL1). I have confirmed that my Discovery path is ORCL:*.
Any thoughts?

hi,
We face the same problem while setting up Oracle ASM on 10R2 RAC on RHEL4. you need to specify the disk path instead of string 'ORCL:'. specify string '/dev/oracleasm/disks/*' and then see, DBCA will show you all the ASM disks you have created.
cheers
Raj

ASM or not ASM?

Hi,
We are migrating our single-instance to RAC on AIX with 10gR2 (10.2.0.3). Our local vendor recommends not to use ASM because a lot of their customers complained about bugs in ASM. We already have had difficult experience to start up ASM instance in the Test server after re-booting the AIX server. The vendor recommend to use either IBM's HACMP or GPFS instead of Oracle's ASM.
Any idea?

Around six months ago, we did migrate one of our business critical database from a single node to 2 node RAC on AIX(5L) using ASM option. So for, we did not face any wired or any technical issue with the ASM.
Interestingly, the latest Oracle Automatic Storage Management book, in Chapter 12, authors did talk about why storage vendors and system administrators dislike ASM.
I wrote a review on this book at my blog:
http://jaffardba.blogspot.com/2008/03/oracle-automatic-storage-management.html
I have also conducted a survey about Oracle ASM usage:
http://www.freelists.org/archives/oracle-l/03-2008/msg00131.html
Jaffar

ASM files not in database

Hi all,
we have oracle 11.2.0 2 node cluster database. there are 20 database files for that database. but when i checked in that location appears 23 datafiles. looks like 3 datafiles are not related to the database. result is like below. i think first 3 files are not updating any thing and which are not listed in the dba_data_files view. so i think i can remove this. please suggest.
Type Redund Striped Time Sys Block_Size Blocks Bytes Space Name
DATAFILE UNPROT COARSE NOV 04 15:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE NOV 04 15:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE NOV 04 15:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194177 34358697984 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 02:00:00 Y 8192 4194303 34359730176 34360786944 xxxx
DATAFILE UNPROT COARSE JAN 30 03:00:00 Y 8192 4188161 34309414912 34327232512 xxxx
DATAFILE UNPROT COARSE JAN 30 03:00:00 Y 8192 3932161 32212262912 32246857728 xxxx

Hi, for rename your files, the sintaxe is : select 'ALTER DATABASE RENAME FILE '''||NAME||''' TO '''||REPLACE(NAME,'+ORA_DATA','+NEW_DATA')||'''; ' FROM v$datafile;
Read the article <http://oraganism.wordpress.com/2012/07/01/how-to-rename-asm-diskgroup-in-11-2/> .
Kind regards,
Bruno Reis.
www.brunors.com

ASM - can not determine RAW

I have three RAW disks . But for some reasons , I can not stamp with asmtoolg ... Please advise.
I have 11gr2 on windows 2008 r2.
C:\>asmtool -list
NTFS \Device\Harddisk0\Partition1 152578M
ORCLDISKDATA40 \Device\Harddisk0\Partition2 7M
ASM-00007: Could not get device number for \\?\Volume{95a7735e-4998-11df-90e6-00
219b2dedc6}
O/S-Error: (OS 1) Incorrect function.
ASM-00007: Could not get device number for \\?\Volume{95a7735d-4998-11df-90e6-00
219b2dedc6}
O/S-Error: (OS 1) Incorrect function.
ASM-00007: Could not get device number for \\?\Volume{95a7735c-4998-11df-90e6-00
219b2dedc6}
O/S-Error: (OS 1) Incorrect function.
ASM-00007: Could not get device number for \\?\Volume{7fa003fb-4b56-11df-90e6-00
219b2dedc6}
O/S-Error: (OS 1) Incorrect function.
C:\>

DISKPART> list disk
Disk ### Status Size Free Dyn Gpt
Disk 0 Online 149 GB 0 B
Disk 1 Online 37 GB 1024 KB *
Disk 2 No Media 0 B 0 B
Disk 3 No Media 0 B 0 B
Disk 4 No Media 0 B 0 B
Disk 5 No Media 0 B 0 B
DISKPART> list volume
Volume ### Ltr Label Fs Type Size Status Info
Volume 0 D Oracle NTFS Simple 25 GB Healthy
Volume 1 G RAW Simple 4102 MB Healthy
Volume 2 F RAW Simple 4102 MB Healthy
Volume 3 E RAW Simple 4101 MB Healthy
Volume 4 H DVD-ROM 0 B No Media
Volume 5 I DVD-ROM 0 B No Media
Volume 6 C OS NTFS Partition 149 GB Healthy System
Volume 7 RAW Partition 8032 KB Healthy
Volume 8 J Removable 0 B No Media
Volume 9 K Removable 0 B No Media
Volume 10 L Removable 0 B No Media
Volume 11 M Removable 0 B No Media

Redologs on ASM but not archivelogs

Hello,
for the same database, is correct to have redolog on ASM when Archivelogs still on filesystem ?
Thank you.

Hello,
There is no correct answer to this problem. It depends on your strategy. The main advantages of ASM are simplicity and unbuffered I/O so make use of them.
Redo log need both write and read operations aside from archiving (bulk read). On the other side Archived Redo rarely need read operations after its initial bulk write, unless you do frequent recovery. So, you don't want to buffer archived redo logs.
Both can take advantage of ASM feature, so you can put both on ASM.
Later on, if are not satisfy with its performance, you can add more disks to ASM. It is easier to manage than putting archived redo logs on file system and the rest on ASM.
In my opinion it is more important to define strategy of storage tiers within the ASM itself. You can then map each tier to ASM disk group. For example for fast read/normal write you can create tier1 with RAID 1 or RAID 10 and map this tier to ASM disk group. You can then put OLTP/DSS data files into this tier (because they requires fast read). You can create other tiers according to your need based on this example.
clydie.com

Asm link not working from kolkata

hi
http://www.oracle.com/technology/tech/linux/asmlib/install.html
this link is not working from india / kolkata.
what to do?

javadev991 wrote:
Now working.
What?
Just cross check certain things
- The servlet you specified in Form Action is correct
- The Form Method must be POST not GET
- The query string param you are specifying in URL which is classifiedsearchtype, You are trying to get the same param in the servlet. It is case sensitive.

Asm disks not showning up when clusterware running

On rhel 4 (centos)
I installed/configured asm
[root@green rc5.d]# ./S50oracleasm status
Checking if ASM is loaded: [ OK ]
Checking if /dev/oracleasm is mounted: [ OK ]
[root@green rc5.d]# ./S50oracleasm listdisks
D1
D2
D3
D4
D5
D6
then installed clusterware 10.2.01
then installed 10G 10.2.01 (software only)
when I try to create a asm dg via dbca the D1 -> D6 dont show up . changing the discovery path from blank to 'ORCL:' didn't help
I had previously done this prior to installing clusterware and had no problem .
any thoughts ?

after changing the disk discover path back and forth between ORCL: and ' ' it started to work . :< (

ASM or not?

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