Multiple ASM Instances on single node

Hi All,
After going through some threads it seems to me that multiple ASM instances on a node is not supported and recommended by ORACLE but i coudn't find any ORACLE document or support matrix mentioning this. Can any one give me a pointer to this. Please correct me if i am wrong and Multiple ASM instances are fully supported by ORACLE.
Thanks,

Multiple ASM instances on a single node are supported but not recommended due to several issues you could encounter during that kind of configuration.
Possible interraction between those instances for identification of each disk area usage,each disk area permissions , database instance to asm instance mapping and so on, could result in unwanted behaviour, as ASM is in some way just oracle's representation of LVM.
Intention is that any kind of distinction/separation of oracle related data under the ASM should be done through the disk groups.
So it seems it would be better to apply this kind of logic rather than doing suspiciously magical and rare configurations that could bring you similiary strange and unexpected problems.

Similar Messages

  • Can there be multiple ASM instances on single node?

    Hi,
    Can there be multiple ASM instances on single node?
    This one says No : http://www.freelists.org/archives/oracle-l/02-2008/msg00317.html
    And This one says Yes : http://www.databasejournal.com/features/oracle/article.php/3571371
    Thanks in advance.
    Thanks,
    Harsha
    Edited by: user498756 on Sep 11, 2008 2:23 AM

    ...that document doesnt say you cannot have multiple ASM instances on a node. It says "...ASM, +you only need one ASM+ instance for that computer, to manage the two database instances that use ASM."
    The fact that you only need one - and I cannot think of a good reason to have more than one - does not preclude the fact that you do seem to be able to have multiple ASM instances on a single node, each looking after its own set of disks and diskgroups.
    Again - I cannot think of a good reason to do so though!
    -Bob

  • Multiple ASM instances using single cluster install - Is it possible??

    Hi,
    I have 2 node RAC cluster installed on Linux. All the storage is on EMC. I need to setup another environment using HP storage on the same hosts. Is it possible to created second ASM instance using the same cluster install?? I wanted to have clear separation b/w EMC and HP environments and that's wondering if it's feasible to do that.
    Haven't tried it yet to see if it complains.
    Thx
    Anitha

    Anitha,
    The data migration won't happen (at least not aggressively) until you do step 2 in your list where you remove the EMC disks. That removal operation will take a long time as Oracle will have to move the data before it can complete the operation. If you want to be sure, I'd recommend creating a new disk group with one of your new disks, put a small tablespace in it, create some data in it, then add a disk to that new group and remove the original disk. Then you'll have some confidence in the procedure and verify that it works without risking your production data. After you test, you can drop the disk group and use the disks for their intended purposes.
    To answer your question, yes, that's the process exactly as I suggested it above. Should work fine--but will probably take a while to do the remove, so be prepared to leave that running for quite a while (i.e. don't expect to close the terminal and go home right after running the remove).
    Dan

  • Multiple ASM instances on a single node

    Can i have multiple ASM instances on a single node? This is to have each instance supporting different environment dev,stage etc
    Thanks
    Sannidhi

    I had been discussing the same issue with someone from Oracle. I asked for multiple ASMs on a server so that we could have seperate ASMs running for, say, 10g and 11g.
    He explained that we should think of ASM as being the same as Veritas FileSystem. We don't run multiple instances of Veritas on our servers. On single Veritas "instance" (set of drivers) provides all the Veritas Fx mountpoints on the server. Similarly, there should be only 1 ASM instance on a server.
    (substitute UFS or ZFS or CFS for Veritas in the above example and you still have only 1 filesystem manager on a server providing one type of filesystem, although you could have, say , UFS and Veritas co-exist ; just as you could have Veritas, ASM and Raw co-exist on a server).
    Hemant K Chitale
    Edited by: Hemant K Chitale on Sep 29, 2009 11:50 AM

  • ASM instance on one node can not startup

    use dbca create database failure
    [oracle@rac1 ~]$ dbca -silent -responseFile /home/oracle/dbca.rsp
    Look at the log file "/opt/ora/product/10.2.0/db_1/cfgtoollogs/dbca/mydb.log" for further details.
    [oracle@rac1 ~]$ cat "/opt/ora/product/10.2.0/db_1/cfgtoollogs/dbca/mydb.log"
    PRKS-1009 : Failed to start ASM instance "+ASM2" on node "rac2", [CRS-0215: Could not start resource 'ora.rac2.ASM2.asm'.]
    ORA-03135: connection lost contact
    [oracle@rac2 bin]$ ./crs_stat -t
    Name           Type           Target    State     Host
    ora....SM1.asm application    ONLINE    ONLINE    rac1
    ora....C1.lsnr application    ONLINE    ONLINE    rac1
    ora.rac1.gsd   application    ONLINE    ONLINE    rac1
    ora.rac1.ons   application    ONLINE    ONLINE    rac1
    ora.rac1.vip   application    ONLINE    ONLINE    rac1
    ora....SM2.asm application    ONLINE    OFFLINE
    ora....C2.lsnr application    ONLINE    ONLINE    rac2
    ora.rac2.gsd   application    ONLINE    ONLINE    rac2
    ora.rac2.ons   application    ONLINE    ONLINE    rac2
    ora.rac2.vip   application    ONLINE    ONLINE    rac2so i try to start asm instance on rac2
    [oracle@rac2 bin]$ ./srvctl start asm -n rac2
    PRKS-1009 : Failed to start ASM instance "+ASM2" on node "rac2", [PRKS-1009 : Failed to start ASM instance "+ASM2" on node "rac2", [rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:SQL*Plus: Release 10.2.0.1.0 - Production on Mon Jul 25 17:58:21 2011
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:Copyright (c) 1982, 2005, Oracle.  All rights reserved.
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:Enter user-name: Connected to an idle instance.
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:SQL> ORA-03113: end-of-file on communication channel
    rac2:ora.rac2.ASM2.asm:SQL> Disconnected
    rac2:ora.rac2.ASM2.asm:
    CRS-0215: Could not start resource 'ora.rac2.ASM2.asm'.]]
      [PRKS-1009 : Failed to start ASM instance "+ASM2" on node "rac2", [rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:SQL*Plus: Release 10.2.0.1.0 - Production on Mon Jul 25 17:58:21 2011
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:Copyright (c) 1982, 2005, Oracle.  All rights reserved.
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:Enter user-name: Connected to an idle instance.
    rac2:ora.rac2.ASM2.asm:
    rac2:ora.rac2.ASM2.asm:SQL> ORA-03113: end-of-file on communication channel
    rac2:ora.rac2.ASM2.asm:SQL> Disconnected
    rac2:ora.rac2.ASM2.asm:check the alert log find
    Mon Jul 25 17:58:23 2011
    Maximum Tranmission Unit (mtu) of the ether adapter is different
    on the node running instance 1, and this node.
    Ether adapters connecting the cluster nodes must be configured
    with identical mtu on all the nodes, for Oracle.
    Please ensure the mtu attribute of the ether adapter on all
    nodes are identical, before running Oracle.
    Mon Jul 25 17:58:23 2011
    Errors in file /opt/ora/admin/+ASM/bdump/+asm2_lmon_29711.trc:
    ORA-27550: Target ID protocol check failed. tid vers=%d, type=%d, remote instance number=%d, local instance number=%d
    LMON: terminating instance due to error 27550
    Mon Jul 25 17:58:25 2011
    Shutting down instance (abort)
    License high water mark = 0
    Mon Jul 25 17:58:28 2011
    Instance terminated by LMON, pid = 29711
    Mon Jul 25 17:58:30 2011
    Instance terminated by USER, pid = 29831and i checked my eth
    [root@rac1 oracle]# ifconfig -a
    eth0      Link encap:Ethernet  HWaddr 00:0C:29:3C:42:0C
              inet addr:192.168.40.102  Bcast:192.168.40.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:9762 errors:0 dropped:0 overruns:0 frame:0
              TX packets:6028 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:1193646 (1.1 MiB)  TX bytes:1037252 (1012.9 KiB)
              Interrupt:67 Base address:0x2400
    eth0:1    Link encap:Ethernet  HWaddr 00:0C:29:3C:42:0C
              inet addr:192.168.40.201  Bcast:192.168.40.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:67 Base address:0x2400
    eth1      Link encap:Ethernet  HWaddr 00:0C:29:3C:42:16
              inet addr:10.10.17.221  Bcast:10.10.17.225  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:30185 errors:0 dropped:0 overruns:0 frame:0
              TX packets:37936 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:19988844 (19.0 MiB)  TX bytes:35126056 (33.4 MiB)
              Interrupt:51 Base address:0x2480
    lo        Link encap:Local Loopback
              inet addr:127.0.0.1  Mask:255.0.0.0
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:52537 errors:0 dropped:0 overruns:0 frame:0
              TX packets:52537 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:4380651 (4.1 MiB)  TX bytes:4380651 (4.1 MiB)
    [root@rac2 ~]# ifconfig -a
    eth0      Link encap:Ethernet  HWaddr 00:0C:29:9C:CC:90
              inet addr:192.168.40.103  Bcast:192.168.40.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:3665 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1489 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:563952 (550.7 KiB)  TX bytes:243127 (237.4 KiB)
              Interrupt:67 Base address:0x2400
    eth0:1    Link encap:Ethernet  HWaddr 00:0C:29:9C:CC:90
              inet addr:192.168.40.202  Bcast:192.168.40.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:67 Base address:0x2400
    eth1      Link encap:Ethernet  HWaddr 00:0C:29:9C:CC:9A
              inet addr:10.10.17.222  Bcast:10.10.17.225  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:38281 errors:0 dropped:0 overruns:0 frame:0
              TX packets:29683 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:35182270 (33.5 MiB)  TX bytes:19905266 (18.9 MiB)
              Interrupt:51 Base address:0x2480
    lo        Link encap:Local Loopback
              inet addr:127.0.0.1  Mask:255.0.0.0
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:44387 errors:0 dropped:0 overruns:0 frame:0
              TX packets:44387 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:2299383 (2.1 MiB)  TX bytes:2299383 (2.1 MiB)any idea ?
    i try to run dbca on rac2 ,it seems OK
    ============
    ASM instance still have problem,no ASM instance create in rac1
    [oracle@rac2 bin]$ ./crs_stat -t
    Name           Type           Target    State     Host
    ora.mydb.db    application    ONLINE    ONLINE    rac1
    ora....b1.inst application    ONLINE    OFFLINE
    ora....b2.inst application    ONLINE    ONLINE    rac2
    ora....SM1.asm application    ONLINE    OFFLINE
    ora....C1.lsnr application    ONLINE    ONLINE    rac1
    ora....C2.lsnr application    ONLINE    OFFLINE              =>  ora.rac1.LISTENER_RAC2.lsnr   (i do not know where this resource come from ??)
    ora.rac1.gsd   application    ONLINE    ONLINE    rac1
    ora.rac1.ons   application    ONLINE    ONLINE    rac1
    ora.rac1.vip   application    ONLINE    ONLINE    rac1
    ora....SM2.asm application    ONLINE    ONLINE    rac2
    ora....C2.lsnr application    ONLINE    ONLINE    rac2
    ora.rac2.gsd   application    ONLINE    ONLINE    rac2
    ora.rac2.ons   application    ONLINE    ONLINE    rac2
    ora.rac2.vip   application    ONLINE    ONLINE    rac2and here is my dbca.rsp file content
    [GENERAL]
    RESPONSEFILE_VERSION = "10.0.0"
    OPERATION_TYPE = "createDatabase"
    [CREATEDATABASE]
    GDBNAME = "mydb.us.oracle.com"
    SID = "mydb"
    NODELIST=rac1,rac2
    TEMPLATENAME = "/home/oracle/mydb.dbc"
    SYSPASSWORD = "Myss123456"
    SYSTEMPASSWORD = "Myss123456"
    EMCONFIGURATION = "NONE"
    DBSNMPPASSWORD = "Myss123456"
    STORAGETYPE=ASM
    DISKLIST=/dev/oracleasm/disks/VOL1,/dev/oracleasm/disks/VOL2
    DISKGROUPNAME=ORADG
    REDUNDANCY=EXTRENAL
    DISKSTRING="/dev/oracleasm/disks/*"
    ASM_SYS_PASSWORD="Myss123456"
    LISTENERS = "listener1 listener2"Edited by: 859340 on 2011-7-24 下午7:23
    Edited by: 859340 on 2011-7-24 下午7:32
    Edited by: 859340 on 2011-7-24 下午7:35
    Edited by: 859340 on 2011-7-24 下午7:51

    Hi,
    Use this tech note on MOS.
    *Instance Crash on startup with ORA-27550: Target ID protocol check failed [ID 730516.1]*
    Regards,
    Levi Pereira

  • Failed to start ASM instance "+ASM1" on node "rac1"

    I have a problem, because when I start RAC and write command crs_stat -t
    column State have 2 wrong parameter..
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    ora....db1.srv application ONLINE ONLINE rac2
    ora.devdb.db application ONLINE ONLINE rac2
    ora....b1.inst application ONLINE OFFLINE
    ora....b2.inst application ONLINE ONLINE rac2
    ora....SM1.asm application ONLINE UNKNOWN rac1
    ora....C1.lsnr application ONLINE ONLINE rac1
    ora.rac1.gsd application ONLINE ONLINE rac1
    ora.rac1.ons application ONLINE ONLINE rac1
    ora.rac1.vip application ONLINE ONLINE rac1
    ora....SM2.asm application ONLINE ONLINE rac2
    ora....C2.lsnr application ONLINE ONLINE rac2
    ora.rac2.gsd application ONLINE ONLINE rac2
    ora.rac2.ons application ONLINE ONLINE rac2
    ora.rac2.vip application ONLINE ONLINE rac2
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    PRKS-1009 : Failed to start ASM instance "+ASM1" on node "rac1", [PRKS-1009 : Failed to start ASM instance "+ASM1" on node "rac1", [CRS-1028: Dependency analysis failed because of:
    CRS-0223: Resource 'ora.rac1.ASM1.asm' has placement error.]]
    [PRKS-1009 : Failed to start ASM instance "+ASM1" on node "rac1", [CRS-1028: Dependency analysis failed because of:
    CRS-0223: Resource 'ora.rac1.ASM1.asm' has placement error.]]
    and when I try start instance manualy then
    PRKP-1001 : Error starting instance devdb1 on node rac1
    CRS-1028: Dependency analysis failed because of:
    CRS-0223: Resource 'ora.devdb.devdb1.inst' has placement error.
    :( Where is my problem??

    hi, i have exactly the same error
    but your suggestions of remove an recreate the asm resource not working
    ./srvctl remove asm -n dbs2 -i +ASM2 -f
    PRKS-1023 : Failed to remove CRS resource for ASM instance "+ASM2" on node "dbs2", [CRS-0214: Could not unregister resource 'ora.dbs2.ASM2.asm'.]
    ./srvctl start asm -n dbs2
    PRKS-1009 : Failed to start ASM instance "+ASM2" on node "dbs2", [PRKS-1009 : Failed to start ASM instance "+ASM2" on node "dbs2", [CRS-1028: Dependency analysis failed because of:
    CRS-0223: Resource 'ora.dbs2.ASM2.asm' has placement error.]]
    [PRKS-1009 : Failed to start ASM instance "+ASM2" on node "dbs2", [CRS-1028: Dependency analysis failed because of:
    CRS-0223: Resource 'ora.dbs2.ASM2.asm' has placement error.]]
    how do i proceed?
    iam using solaris 10 with t2000 and t5210 server and oracle 10.2.0.4

  • Cloning a RAC environment using ASM to a single node.

    Hi partners,
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    I know, it can reached using Rapid Clone, but I would like to know, what are the needed steps to clone the database which is using ASM and raw devices, I am thinking to recrate manually the controlfiles.
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  • ASM instances on 2 node Oracle RAC 10g r2  on Red Hat 4 u1

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    I'm having this same problem. Did you ever find a solution?

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    Thanks,
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  • How to clone RAC Instance to Single Node Instance??

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    Hi;
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    Hope it helps
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