the ASM disks can be in a different Partition for a database

Hi all
I have 2 datababase on the server. I save the data file on MDMDISK1 for the MDM and DWHDISK1 database to the DWH database.
I can add/dev/sdd5, / dev/sdd6, / dev/sdd7 to DWHDG1 disk group to give more space to the DWH database.

Table of Partition disk configuration
Group name size GB ASM Disk Disk drive
/ dev/SDS (MON) 107
/ dev/sdd1 7 CRSDISK1
/ dev/sdd2 7 CRSDISK2
/ dev/SDS3 7 CRSDISK3
/ dev/SDS4 8
/ dev/sdd5 24
/ dev/SDD6 24
/ dev/sdd7 24
/ dev/sde (MON) 107
/ dev/SDE1 24 MDMDISK1 + MDMDG1
/ dev/SDE2 24 MDMDISK2
/ dev/SDE3 24 MDMDISK3
/ dev/sde4 24 MDMDISK4
/ dev/sdf (MON) 107
/ dev/SDF1 24 DWHDISK1 + DWHDG1
/ dev/sdf2 24 DWHDISK2
/ dev/SDF3 24 DWHDISK3
/ dev/sdf4 24 DWHDISK4

user5846399 wrote:

but I wanted insurance with people with experience as you go this drive on differnet LUN will not impede performance.

A LUN is a logical unit - it may be a single physical disk. It may consists of 20 physical drives. If the LUN itself does not determine the performance. Performance is determined by the parts in movement under it.

Multiple LUNS to the same diskgroup using or the volume of file system is a common practice. If this would be a problem (performance or otherwise) depends on the cloth under the LUN.

For example, a logic unit number could be RAID5 and another logic unit number can be RAID0 + 1. Mixture of different RAID levels is not really a good idea.

A LUN can be a storage on a San and accessible via the fiber channel. Another logic unit number could be an iScsi device, accessed through intellectual property. Mix very different storage architecture and storage protocols are not a good idea.

A LUN can be RAID0, through fiber double channels connected to a switch, for the storage of 1 storage server. Another logic unit number can also be RAID0 and accessible through the same fiber channels and switch, but since the storage server 2. Whereby the RAID levels are the same and the storage Protocol and infrastructure the same - and that will not only make a compatible mix, but can actually increases the redundancy if you use these as disk mirrors ASM (which means that ASM can lose the server storage 1 or 2 and still works).

Tags: Database

Similar Questions

RunInstall does not show the ASM disks

Hello
I googled arleady for so long but I can't find the solution for my problem.
I'm under runInstall of the Oracle Grid Infrastructure installation program. When it comes to "Create the ASM disk groups", the window does not show one of my starts created previously, even if I change the discovery trail to ' / oracleasm/dev/discs / * "Please help!
[dev root@grid1] # / usr/sbin/oracleasm listdisks
DATA01
DATA02
FRA01
FRA02
OCRVOTE01
OCRVOTE02
OCRVOTE03
[dev root@grid1] # / usr/sbin/oracleasm-discover
ASMLib /opt/oracle/extapi/64/asm/orcl/1/libasm.so using
[Library ASM - Generic Linux, version 2.0.4 (KABI_V2)]
Disk discovery: ORCL:DATA01 [31455232 blocks (16105078784 bytes), maxio 512]
Disk discovery: ORCL:DATA02 [31455232 blocks (16105078784 bytes), maxio 512]
Disk discovery: ORCL:FRA01 [20969472 blocks (10736369664 bytes), maxio 512]
Disk discovery: ORCL:FRA02 [20969472 blocks (10736369664 bytes), maxio 512]
Disk discovery: ORCL:OCRVOTE01 [10477194 blocks (5364323328 bytes), maxio 512]
Disk discovery: ORCL:OCRVOTE02 [10483712 blocks (5367660544 bytes), maxio 512]
Disk discovery: ORCL:OCRVOTE03 [10483712 blocks (5367660544 bytes), maxio 512]
[dev root@grid1] # / usr/sbin/oracleasm querydisk DATA01
Disk 'DATA01' is a valid ASM disk
[records root@grid1] # pwd
/ dev/oracleasm/Disks
[records root@grid1] # he's
Total 0
BRW - rw - 1 grid asmadmin 8, 65 4 Mar 11:18 DATA01
BRW - rw - 1 grid asmadmin 8, 81-4 Mar 11:18 DATA02
BRW - rw - 1 grid asmadmin 8, 97-4 Mar 11:18 FRA01
BRW - rw - 1 grid asmadmin 8, 113 4 Mar 11:18 FRA02
BRW - rw - 1 grid asmadmin 8, 17 4 Mar 11:16 OCRVOTE01
BRW - rw - 1 grid asmadmin 8, 33-4 Mar 11:17 OCRVOTE02
BRW - rw - 1 grid asmadmin 8, 49-4 Mar 11:17 OCRVOTE03
[records root@grid1] # rpm - qa | grep oracle
oracleasm-support - 2.1.8 - 1.el6.x86_64
oracleasmlib - 2.0.4 - 1.el6.x86_64
oraclelinux-release-6Server - 6.0.2.x86_64
oraclelinux-release-notes-6Server - 14.x86_64
kmod-oracleasm - 2.0.8 - 4.el6_6.x86_64
Oracle-logos - 60.0.14 - 1.0.2.el6.noarch

to clarify this, please login as user "grid" and run the command
id

This will show you if id is a member of the Group asmadmin.

Martin

Add more space to the ASM disk group

Hi all
I am new to the DBA role and also in a process of learning. I need your help in putting a space at the ASM disk group. My VMware admin will add disk space to the virtual machine, and then the Linux admin will add space on Linux servers. Finally, I think I need to rebalance the database disk group to view the extra space. I'm not sure of what all the steps involved in this process. I like to read the Oracle Documentation, but I'm blurry and hesitant. Please let me know the steps to follow to add the ASM disk group space.
We use
Oracle DB version 11.2.0.3.0
Linux version: 2.6.18 - 238.12.1.el5
Thanks for your help

No....

You don't need any instance restart. More when you add a disk to a diskgroup, all rac nodes can see.

just...

You should add a node and watch v$ asm_operation...

Concerning

Create the ASM disk groups instance is not found

Hello
I just started to learn Oracle, very inexperienced database in Oracle.
I have a problem to create an ASM instance. My environment is SUSe Linux Enterprise 11 64-bit, I am creating an instance ASM 11.2.0
1. when I create ASM instance, I couldn't find ASM disks, if an ASM Instance could not be created.
2. when I search on the internet on the creation of the ASM disk, it seems that I need to connect to the instance ASM as ASMSYS, but I have not an ASM instance is runing so ASM DISK groups has not can be created.
I feel that I'm at an impasse.
Could someone help me?
Thank you.

You may need to configure the udev subsystem to set permissions of the device and configure the parameter diskstring ASM or install Linux ASMLib, that supports both and more. In any case, you will need to provide more details and probably do some research to learn more about the basic concepts. To install Oracle ASM is not click and play.

Narrowing of the ASM disks

I just tried to resize an ASM disk and although the reaction was "successful", it does not appear to have been any change.

I was trying to shrink DATA_0001 from 200G to 100G. Am I missing something obvious?

SQL> select group_number, name, path, os_mb, total_mb, free_mb from v$asm_disk;

GROUP_NUMBER NAME                 PATH                                OS_MB   TOTAL_MB    FREE_MB
------------ -------------------- ------------------------------ ---------- ---------- ----------
          0                      /dev/iscsi/rman11                   20489          0          0
          0                      /dev/iscsi/rmanB11                 102398          0          0
          0                      /dev/iscsi/rman1                    20490          0          0
          0                      /dev/iscsi/vote3                      300          0          0
          0                      /dev/iscsi/vote1                      300          0          0
          0                      /dev/iscsi/rmanP11                 204805          0          0
          0                      /dev/iscsi/vote2                      300          0          0
          0                      /dev/iscsi/rmanP1                  204810          0          0
          0                      /dev/iscsi/rmanB1                  102405          0          0
          1 DATA_0000            /dev/iscsi/db1                      10245      10245      10109
          2 FRA_0000             /dev/iscsi/flshbk1                  20490      20490      20465

GROUP_NUMBER NAME                 PATH                                OS_MB   TOTAL_MB    FREE_MB
------------ -------------------- ------------------------------ ---------- ---------- ----------
          2 FRA_0001             /dev/iscsi/flshbkR1                409605     409605     409262
          1 DATA_0001            /dev/iscsi/dbR1                    204810     204810     202297

13 rows selected.

SQL> alter diskgroup data resize disk 'data_0001' size 100g;

Diskgroup altered.

SQL> select group_number, name, path, os_mb, total_mb, free_mb from v$asm_disk;

GROUP_NUMBER NAME                 PATH                                OS_MB   TOTAL_MB    FREE_MB
------------ -------------------- ------------------------------ ---------- ---------- ----------
          0                      /dev/iscsi/rman11                   20489          0          0
          0                      /dev/iscsi/rmanB11                 102398          0          0
          0                      /dev/iscsi/rman1                    20490          0          0
          0                      /dev/iscsi/vote3                      300          0          0
          0                      /dev/iscsi/vote1                      300          0          0
          0                      /dev/iscsi/rmanP11                 204805          0          0
          0                      /dev/iscsi/vote2                      300          0          0
          0                      /dev/iscsi/rmanP1                  204810          0          0
          0                      /dev/iscsi/rmanB1                  102405          0          0
          1 DATA_0000            /dev/iscsi/db1                      10245      10245      10004
          2 FRA_0000             /dev/iscsi/flshbk1                  20490      20490      20465

GROUP_NUMBER NAME                 PATH                                OS_MB   TOTAL_MB    FREE_MB
------------ -------------------- ------------------------------ ---------- ---------- ----------
          2 FRA_0001             /dev/iscsi/flshbkR1                409605     409605     409262
          1 DATA_0001            /dev/iscsi/dbR1                    204810     204810     202402

13 rows selected.

The free_mb seems to have increased, but otherwise I do not see the effect of my change. Maybe I'm looking in the wrong place?

I tried to restart the ASM instance, but it made no difference.

After the resizing of the ASM disk, I have narrowed the disk volume in our storage array. ASM was naturally down at the time.

When I tried to restart ASM I saw...

SQL> startup
ASM instance started

Total System Global Area  283930624 bytes
Fixed Size                  2158992 bytes
Variable Size             256605808 bytes
ASM Cache                  25165824 bytes
ORA-15032: not all alterations performed
ORA-15036: disk '/dev/iscsi/dbR1' is truncated

No of my starts are mounted...

SQL> select group_number, name, state from v$asm_diskgroup;

GROUP_NUMBER NAME            STATE
------------ --------------- ---------------------------------
          0 DATA            DISMOUNTED
          0 FRA             DISMOUNTED

Here is the log of the ASM instance alert messages...

SQL> ALTER DISKGROUP ALL MOUNT
NOTE: cache registered group DATA number=1 incarn=0x5f5e3343
NOTE: cache began mount (not first) of group DATA number=1 incarn=0x5f5e3343
NOTE: cache registered group FRA number=2 incarn=0x5f5e3344
NOTE: cache began mount (not first) of group FRA number=2 incarn=0x5f5e3344
WARNING::ASMLIB library not found. See trace file for details.
NOTE: Assigning number (1,0) to disk (/dev/iscsi/db1)
NOTE: cache dismounting group 1/0x5F5E3343 (DATA)
NOTE: dbwr not being msg'd to dismount
NOTE: lgwr not being msg'd to dismount
NOTE: cache dismounted group 1/0x5F5E3343 (DATA)
NOTE: cache ending mount (fail) of group DATA number=1 incarn=0x5f5e3343
kfdp_dismount(): 1
kfdp_dismountBg(): 1
NOTE: De-assigning number (1,0) from disk (/dev/iscsi/db1)
ERROR: diskgroup DATA was not mounted
NOTE: Assigning number (2,1) to disk (/dev/iscsi/flshbkR1)
NOTE: Assigning number (2,0) to disk (/dev/iscsi/flshbk1)
NOTE: cache dismounting group 2/0x5F5E3344 (FRA)
NOTE: dbwr not being msg'd to dismount
NOTE: lgwr not being msg'd to dismount
NOTE: cache dismounted group 2/0x5F5E3344 (FRA)
NOTE: cache ending mount (fail) of group FRA number=2
incarn=0x5f5e3344
kfdp_dismount(): 2
kfdp_dismountBg(): 2
NOTE: De-assigning number (2,0) from disk (/dev/iscsi/flshbk1)
NOTE: De-assigning number (2,1) from disk (/dev/iscsi/flshbkR1)
ERROR: diskgroup FRA was not mounted
ORA-15032: not all alterations performed
ORA-15036: disk '/dev/iscsi/dbR1' is truncated
ERROR: ALTER DISKGROUP ALL MOUNT

Clues?

Thank you

Steve

Hi Steve,.

I think what happened occurred due to certain steps in your initial procedure, a corruption of ASM header that cannot be repaired automatically more. Therefore, check if ML Note 553319.1 - ORA-15036 when to start an ASM Instance - can be used to solve your problem, too.

Now, in order to avoid such things, I would make the following the next time:

Stop all except 1 ASM instance.
CHANGE Diskgorup RESIZE DISK - the disk that you want to resize.
Wait for the rebalancing that may occur finally.
stop this ASM instance
change the size of the disk to the disk level
restart all instances of the DSO.

This seems to be the safest way to do it. A perspective HA, some optimization might be possible, I think.

Hope that helps. Thank you
Markus

Why the SAN disks and drives NAS recognized differently by the computer?

Hi all;

I'm a newbie in the sharing of storage.
Why the SAN disks and drives NAS recognized differently by the computer? Computer sees SAN disks as local drives, NAS drives as network drive, even if they are all connected to the computer by the same network topology.
I knew that SAN uses the block level transfer to transfer data all in SIN use level file transfer. Is that what this has something to do with which SAN and NAS drives are recognized differently by the computer? If so, how?

Thank you.

Hello

The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the TechNet Forums.
http://social.technet.Microsoft.com/forums/en/w7itpronetworking/threads

Installation of Oracle 11 g R2 grid does not detect the ASM disks

Hi guys,.
I'm trying to install Oracle 11 g R2 RAC and as part of the installation of the grid, the Setup program does not detect the ASM disks.
Here are the outputs for some commands.
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Reload from disk partitions: fact
Cleaning up stale ASM disks...
ASM disks scanning system...
Instantiation of disk 'ASMDATA2 '.
Instantiation of disk 'ASMDATA1 '.
[root@rac1 ~] # oracleasm listdisks
ASMDATA1
ASMDATA2
[root@rac1 ~] # ls - ls/dev/oracleasm/disks
Total 0
0 brw - rw - 1 grid asmadmin 252, 3 14 May 17:18 ASMDATA1
0 brw - rw - 1 grid asmadmin 252, 2 14 May 17:18 ASMDATA2
I already tried to reconfigure Oracleasm (oracleasm configure - i) but no luck.
I would be really grateful for the help here as its been a few days now and want to complete the installation as soon as possible
Concerning
Praveen

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The same drive letter may point to different locations for different processes?

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Why can't I drop the ASM disks and stop ASMLib?
Hi, I wanted to remove the disc, but this operation has failed:

1.

/etc/init.d/oracleasm deletedisk DATA1
Remove ASM disk "DATA1" [NOT]

I know there is the solution to replace header ASM on a disc information
DD if = / dev/zero of = < your_raw_device > bs = 1024 count = 100

and then droping is successful

but I've also seen resources who said that it should be count = 50

If someone could confirm count = 100 or 50?

2.

In addition to this I tried to stop ASMLib and she doesn't have too:

stop /etc/init.d/oracleasm
Drop Oracle ASMLib discs: [OK]
Close the driver Oracle ASMLib: [FAILURE]

OK, so using dd will help me to get rid of the disks, but I'm worried about ASMLib in general, why can't you stop it? All instances of the ASM have been removed before. There is no software installed ASM, in addition to ASMLib.
There are several things not clear

1 as most of the people here you forgot to display four-digit version number, assuming that Oracle never changes, or we can guess that you are running.
The two statements are false. To stop asmlib, you use exit oracleasm

2 you use the root account or another account? You must use the root account

3. Why do you not use the oracleasm command?

----------
Sybrand Bakker
Senior Oracle DBA

Unlike used MB of available space in the ASM disk between primary and standby database group

Hi all
We are seeing a difference in ASM disk group DATA1 USED_MB between elementary school a Standby.Its an AAM.4 node RAC
Primary
-------
NAME TOTAL USED GB FREE GB REQUIRED FREE GB USABLE % USABLE free of CHARGE (GB)
------------------------------ ------------ ------------ ------------ ---------------- ---------------- --------------
Data1 141 534 66 082 75 452 15 726 42.0 59 726
DATA_XDP501 17 766 11 635 6 131 2 538 3 593 20.0
Standby
NAME TOTAL USED GB FREE GB REQUIRED FREE GB USABLE % USABLE FREE (GB)
------------------------------ ------------ ------------ ------------ ---------------- ---------------- --------------
Data1 141 534 57 059 84 475 15 726 68 749 49.0
DATA_XDP801 17 766 11 781 5 985 2 538 3 447 19.0
Mode standby is runnig like
OPEN_MODE
--------------------
READ ONLY TO APPLY
Some body give an overview on what could be the purpose or specific controls will help
Thank you
Soundar.M

Hello

You can run sql in below document ASM sqlplus.

Then, you will come to know which files are files of redundent on ASM diskgroup.

HOW to map ASM FILES WITH FILES of DATABASE ONLINE (Doc ID 552082.1)

Delete these additional level of the DSO files, then validate.

Kind regards
Loriette

file data and the ASM disks.

Hi experts,
We have a situation where one of the data file has been corrupted. Can we find the related ASM disk... no request to find that the drive associated with asm (physical disk) will be useful...
because for example I need to find the disk related asm for the data file: +disk_group_1/my_dir/my_file.dbf
Kind regards
Spengler

Hi Spengler,

In ASM we saw exactly the same as database.

What you do is,

Your file "+ disk_group_1/my_dir/my_file.dbf" is an alias, so go to this directory through asmcmd and ls - lt and get the original physical file named ..

+ Now check where the distribution of the is distributed for this file.

To do this, run the command UESA (read-only)

UESA - diskstring ''-'' dump - noimage

This will generate a new directory.

on the inside you will see 2 files.

+ Now open the .map file and find this filenumber, it is like F00000NNN

Where NNN corresponds to file_number

+ See related disc of the map as N00n file, then look for this file report.txt N00n.

-This will give you disc associated with this asm file.

Kind regards
Loriette

How to increase space in the ASM disk groups?

Hi all
I'm a newbie DBA in my team and today morning received an alert of OEM which:
Target name = + ASM_ZEUS.techiebros.com
Message = disk group DATA requires rebalance because at least a disk space is low.
Any solution?

To fix this, you can run this command: Alter diskgroup ASMDB add drive "here, the way of the new disk" Rebalance power 4 WAIT;

After that, you can see through the v$ asm_operation;

Read: http://jarneil.wordpress.com/2008/10/27/asm-rebalance-io-saturation/> or <> http://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_1006.htm>

Tools to prepare the ASM disks
What is the difference between the asmca and oracleasm?

Scott
Hello

' / usr/bin/oracleasm "ASMLib is a library of optional support for the Oracle database automatic storage management feature (this (RPM) is not a part of the Oracle Grid infrastructure Installation). ASMLib allows a more efficient Oracle using ASM database that can join groups of disks it uses.

ASMLib is available on Linux Plataform.
http://www.Oracle.com/technetwork/topics/Linux/asmlib/index-101839.html

ASMCA - ASM Assistant de Configuration Oracle is an Oracle Grid Infrastructure installation utility that supports the installation and the configuration of the ASM instances, groups of disks, volumes and Oracle Automatic Storage Management Cluster File System (Oracle ACFS). It must be used in all the platform to configure and manage the DSO.
http://docs.Oracle.com/CD/E16338_01/server.112/e10500/ASMCA.htm

Kind regards
Levi Pereira

the ASM disks can be in a different Partition for a database

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