Distance limit between nodes on RAC

Hi all,
Can anyone give idea that what's the maximum distance allowed between nodes in RAC.We're planning to install 10g RAC on Solaris and we've two sites.Distance between these sites is 12 KM's.
Any feedback will be appreciated.
Regards.

See the following two papers on OTN
http://www.oracle.com/technology/products/database/clustering/index.html
Using standard NFS to support a third voting disk on an Extended Distance cluster configuration on Linux,AIX, or Solaris (PDF) January 2007
Oracle Real Application Clusters on Extended Distance Clusters(PDF) November 2006
12km is fine as far as distance goes, but there are other requirements.
-Erik

Similar Messages

  • Starting a node while you are in other node in RAC

    Hi,
    Any idea how to start a node while you are in other node in RAC?

    Hi,
    Not sure what is your database version. However, you can start/stop the instance via srvctl and/or sql*plus.
    Note: 753516.1 - The difference between using srvctl vs using sqlplus for start/stop one or more database nodes
    Oracle® Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide
    http://www.oracle.com/technology/documentation/database.html
    Regards,
    Hussein

  • R12 with 2 node 10g RAC is not updating with autoconfig correctly.

    Hi,
    we are on R12.0.6 with 2 node 10g RAC. Our collegue did the RAC setup, I was not there at that moment
    steps he followed is
    1. Installed 10g CRS,ASM 10.2.0.3 software and bring up the two nodes.
    2. Configured the RAC DB to Oracle Appplication and registered the Listener with CRS.
    Name Type Target State Host
    ora....D1.inst application ONLINE ONLINE erpdb1
    ora....D2.inst application ONLINE ONLINE erpdb2
    ora.ERPPROD.db application ONLINE ONLINE erpdb1
    ora....SM1.asm application ONLINE ONLINE erpdb1
    ora....B1.lsnr application ONLINE ONLINE erpdb1
    ora.erpdb1.gsd application ONLINE ONLINE erpdb1
    ora.erpdb1.ons application ONLINE ONLINE erpdb1
    ora.erpdb1.vip application ONLINE ONLINE erpdb1
    ora....SM2.asm application ONLINE ONLINE erpdb2
    ora....B2.lsnr application ONLINE ONLINE erpdb2
    ora.erpdb2.gsd application ONLINE ONLINE erpdb2
    ora.erpdb2.ons application ONLINE ONLINE erpdb2
    ora.erpdb2.vip application ONLINE ONLINE erpdb2
    oracle@erpdb1 $
    The issue is, in our tnsnames.ora in both the nodes.
    ===
    ERPPROD=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    instead of
    ERPPROD=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    (INSTANCE_NAME=ERPPROD2)
    Node1 tnsnames.ora
    oracle@erpdb1 $ cat tnsnames.ora
    # This file is automatically generated by AutoConfig. It will be read and
    # overwritten. If you were instructed to edit this file, or if you are not
    # able to use the settings created by AutoConfig, refer to Metalink Note
    # 387859.1 for assistance.
    #$Header: NetServiceHandler.java 120.16.12000000.4 2008/04/28 06:39:48 schagant ship $
    ERPPROD=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD1=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD1_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD2=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD2)
    ERPPROD2_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD2)
    ERPPROD_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD2_LOCAL=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    ERPPROD1_LOCAL=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    ERPPROD_BALANCE=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (LOAD_BALANCE=YES)
    (FAILOVER=YES)
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    ERPPROD_REMOTE=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    LISTENER_ERPPROD1=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    LISTENERS_ERPPROD=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    extproc_connection_data =
    (DESCRIPTION=
    (ADDRESS_LIST =
    (ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROCERPPROD1))
    (CONNECT_DATA=
    (SID=PLSExtProc)
    (PRESENTATION = RO)
    IFILE=/u01/app/oracle/product/10/db/network/admin/ERPPROD1_erpdb1/ERPPROD1_erpdb1_ifile.oraoracle@erpdb1 $
    oracle@erpdb1 $
    =======
    Node2 tnsnames.ora
    =======
    oracle@erpdb2 $ cat tnsnames.ora
    # This file is automatically generated by AutoConfig. It will be read and
    # overwritten. If you were instructed to edit this file, or if you are not
    # able to use the settings created by AutoConfig, refer to Metalink Note
    # 387859.1 for assistance.
    #$Header: NetServiceHandler.java 120.16.12000000.4 2008/04/28 06:39:48 schagant ship $
    ERPPROD=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD1=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD1_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD2=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD2)
    ERPPROD2_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD2)
    ERPPROD_FO=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    (INSTANCE_NAME=ERPPROD1)
    ERPPROD2_LOCAL=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    ERPPROD1_LOCAL=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    ERPPROD_BALANCE=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (LOAD_BALANCE=YES)
    (FAILOVER=YES)
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    (CONNECT_DATA=
    (SERVICE_NAME=ERPPROD)
    ERPPROD_REMOTE=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    LISTENER_ERPPROD2=
    (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    LISTENERS_ERPPROD=
    (DESCRIPTION=
    (ADDRESS_LIST=
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
    (ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
    extproc_connection_data =
    (DESCRIPTION=
    (ADDRESS_LIST =
    (ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROCERPPROD2))
    (CONNECT_DATA=
    (SID=PLSExtProc)
    (PRESENTATION = RO)
    IFILE=/u01/app/oracle/product/10/db/network/admin/ERPPROD2_erpdb2/ERPPROD2_erpdb2_ifile.oraoracle@erpdb2 $
    =====
    Pl let us know how we can achive through autoconfig.
    Regards
    Vasu

    Vasu,
    The issue is, in our tnsnames.ora in both the nodes.What is the issue?
    I believe the following documents should be helpful in configuring your tnsnames.ora (and other files) with RAC implemented.
    Note: 388577.1 - Using Oracle 10g Release 2 Real Application Clusters and Automatic Storage Management with Oracle E-Business Suite Release 12
    https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=388577.1
    Note: 756050.1 - Troubleshooting Autoconfig issues with Oracle Applications RAC Databases
    https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=756050.1
    Regards,
    Hussein

  • ASM instances on 2 node Oracle RAC 10g r2  on Red Hat 4 u1

    Hi all
    I'm experiencing a problem in configuring diskgroups under +ASM instances on a two node Oracle RAC.
    I followed the official guide and also official documents from metalink site, but i'm stuck with the visibility of asm disks.
    I created fake disks on nfs with Netapp certified storage binding them to block device with the usual trick "losetup /dev/loopX /nfs/disk1 " ,
    run "oracleasm createdisk DISKX /dev/loopX" on one node and
    "oracleasm scandisks" on the other one.
    With "oracleasm listdisks" i can see the disks at OS level in both nodes , but , when i try to create and mount diskgroup in the ASM instances , on the instance on which i create the diskgroup all is well, but the other one doesn't see the disks at all, and diskgroup mount fails with :
    ERROR: no PST quorum in group 1: required 2, found 0
    Tue Sep 20 16:22:32 2005
    NOTE: cache dismounting group 1/0x6F88595E (DG1)
    NOTE: dbwr not being msg'd to dismount
    ERROR: diskgroup DG1 was not mounted
    any help would be appreciated
    thanks a lot.
    Antonello

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

  • Error when adding a new node to RAC 10g

    Hi all,
    I have a RAC 10g environment test in Linux Red Hat Umbreakble 5 with two nodes. This RAC is fine on 2 nodes.
    I want to add a new node (rac3) of the following way:
    - The node 1 (rac1) is started and the instance ORCL1 is online.
    - The node 2 (rac2) is offline. i.e the machine is off.
    - The node 3 (rac3). The machine is on and already configured
    So that when I execute the CRS_home\oui\bin\addnode.bat on node 1 and put the information of node 3 (Public node name, Private node name, Virtual host name) and press next I get the following message:
    OUI-35000: Fatal cluster error encountered (PRKC-1071 Nodes rac2 did not respond to ping in 30 seconds) - Sure: The machine is off;
    My question is: Can´t I add a new node on RAC if a node is off ?
    Anybody can help me.
    Thanks.
    (Wander Brazil)

    Interesting question.
    You might have better luck getting an answer if you ask where people discuss RAC, instead of asking where people report documentation issues. (Go to http://forums.oracle.com and scroll down to 'Grid Computing' to see RAC forums.)

  • Help needed in deleting nodes from RAC database

    Our DB is 10g RAC database and the servers are Window 2003 server. Initially the database was configured to have 4 nodes. For some reason we stopped the instances in the first two nodes and the current database is running on node3 and node4. I queried the v$thread view and it shows 3 records. Thread 2 is closed and disabled. Thread 3 is open and public and thread 4 is open and private. Now we need to disconnect nodes 1 and 2 from RAC db and cluster ware (We use Oracle cluster ware) and plan to use those two servers for other purposes. Although I read through the Oracle doc regarding deleting node from RAC “11 Adding and Deleting Nodes and Instances on Windows-Based Systems” and wrote down the steps we need to take but I am still not comfortable in doing it since it is production env and we don’t have any dev env to practice those steps. So I would like to borrow your experiences and your lessons learned while you were doing those. Please share your thoughts and insights with us.
    Thank you so much for your help,
    Shirley

    what's your full version? I can warn about specific issues in 10.1.0.3 and 10.2.0.1 - for example, in some cases (depending on how the listener was configured), it will be impossible to delete the listener for the deleted node. Known bug.
    To avoid many many known bugs, you may want to upgrade to at least 10.2.0.2 before removing a node (from my experience, this is the first stable RAC version).
    In any case, deleting a node is a rather delicate process. I really really recommend practicing. Take any pc/laptop, install VMWARE, define two virtual machines, install RAC and remove one node. It will take you an extra day or two, and could save your production.

  • I need to add a new node to RAC Oracle 10g R2

    I need to add a new node to RAC Oracle 10g R2.
    what is the best mode.
    cloning or step by step?
    SO: Solaris 64bit
    Message was edited by:
    ACS

    Hi All,
    I get the following error eventhough I have followed the instruction for Solaris R2. The instruction is enclosed. Please Advise! Thanks.
    /app/cluvfy/runcluvfy.sh stage -post hwos -n nod1 -verbose
    Result: User equivalence check failed for user "oracle".
    ERROR:
    User equivalence unavailable on all the nodes.
    Verification cannot proceed.
    Post-check for hardware and operating system setup was unsuccessful on all the nodes.
    =========================
    1. Log in as the oracle user.
    2. If necessary, create the .sshdirectory in the oracle user’s home directory and
    set the correct permissions on it:
    $ mkdir ~/.ssh
    $ chmod 700 ~/.ssh
    3. Enter the following commands to generate an RSA key for version 2 of the SSH
    protocol:
    $ /usr/bin/ssh-keygen -t rsa
    At the prompts:
    ¦ Accept the default location for the key file.
    ¦ Enter and confirm a pass phrase that is different from the oracle user’s
    password.
    This command writes the public key to the ~/.ssh/id_rsa.pub file and the
    private key to the ~/.ssh/id_rsafile. Never distribute the private key to anyone.
    4. Enter the following commands to generate a DSA key for version 2 of the SSH
    protocol:
    $ /usr/bin/ssh-keygen -t dsa
    At the prompts:
    ¦ Accept the default location for the key file
    Pre-Installation Tasks 2-11
    Creating Required Operating System Groups and User
    ¦ Enter and confirm a pass phrase that is different from the oracle user’s
    password
    This command writes the public key to the ~/.ssh/id_dsa.pub file and the
    private key to the ~/.ssh/id_dsa file. Never distribute the private key to
    anyone.
    Add keys to an authorized key file: Complete the following steps:
    1. On the local node, determine if you have an authorized key file
    (~/.ssh/authorized_keys). If the authorized key file already exists, then
    proceed to step 2. Otherwise, enter the following commands:
    $ touch ~/.ssh/authorized_keys
    $ cd ~/.ssh
    $ ls
    You should see the id_dsa.pub and id_rsa.pubkeys that you have created.
    2. Using SSH, copy the contents of the ~/.ssh/id_rsa.puband
    ~/.ssh/id_dsa.pubfiles to the file ~/.ssh/authorized_keys, and provide
    the Oracle user password as prompted. This process is illustrated in the following
    syntax example with a two-node cluster, with nodes node1 and node2, where the
    Oracle user path is /home/oracle:
    [oracle@node1 .ssh]$ ssh node1 cat /home/oracle/.ssh/id_rsa.pub >>
    authorized_keys
    oracle@node1’s password:
    [oracle@node1 .ssh]$ ssh node1 cat /home/oracle/.ssh/id_dsa.pub >>
    authorized_keys
    oracle@node1 .ssh$ ssh node2 cat /home/oracle/.ssh/id_rsa.pub >>
    authorized_keys
    oracle@node2’s password:
    [oracle@node1 .ssh$ ssh node2 cat /home/oracle/.ssh/id_dsa.pub
    authorized_keysoracle@node2’s password:
    Note: Repeat this process for each node in the cluster                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

  • How do we know the Master Node in RAC ? ?

    Hi Experts,
    We have implemented 2-Node RAC 11g R2 on Linux Platform. My query is How do we know the Master Node in RAC ? ?
    Thanks
    Venkat

    Hi,
    There is no such thing as "master node" in RAC configurations. All nodes are equal.
    Sebastian wrote: The only thing closest to something like a "Master" is that only one node has the role to update the Oracle Cluster Registry (OCR), all other nodes only read the OCR.
    {message:id=9827969}
    and
    {message:id=2154683}
    Regards,
    Levi Pereira

  • How to clone a 2-node ASM RAC db to a 3-node ASM RAC db by RMAN?

    We need to clone a 2-node ASM RAC db to a 3-node ASM RAC db by RMAN. I would think this will be about the same as a regular single db procedure by RMAN mostly. However, in 3 node RAC, there will be additional instance thread in redo (thread 1,2, and 3). Questions will be
    1. Should I use CRSCTL to add new instance (3rd)? -- I guess yes
    2. Should I create additional online redo group for thread 3? -- I guess yes
    3. Should I create addition undo tablespace? -- I guess yes
    Can any body provide a procedure of cloning the DB?
    Thanks!

    Not just easy as next, next, next
    version depenedencies and etc.
    [from Oracle DOC|http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/adddelunix.htm#BEICADHD]
    AND
    [Doc ID:      270512.1: Adding a Node to a 10g RAC Cluster|https://metalink.oracle.com/CSP/ui/flash.html#tab=KBHome%28page=KBHome&id=%28%29%29,%28page=KBNavigator&id=%28bmDocID=270512.1&from=BOOKMARK&bmDocType=BULLETIN&bmDocDsrc=KB&bmDocTitle=%3Cb%3EAdding%3C/b%3E%20a%20%3Cb%3ENode%3C/b%3E%20to%20a%2010g%20%3Cb%3ERAC%3C/b%3E%20Cluster&viewingMode=1143%29%29]

  • Difference between oracle 9i Rac and 10g Rac

    Friends -
    Could you please list out what are the main differences between oracle 9i Rac and oracle 10g Rac
    Appreciate your support on this
    Regards
    satish

    hi
    check the new features document of 10g RAC
    http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/whatsnew.htm#sthref6
    HTH

  • When one node reboot other node in RAC

    Hi Friends,
    I faced one situation where one node of RAC cluster had been rebooted by other node. This happen due to network interconnect link fluctuation.
    Sep 13 16:23:48 kkvs1a su: [ID 810491 auth.crit] 'su admin' failed for wipro1 on /dev/pts/3
    Sep 14 00:22:17 kkvs1a ixgbe: [ID 611667 kern.info] NOTICE: ixgbe3: link down
    Sep 14 00:22:21 kkvs1a ixgbe: [ID 611667 kern.info] NOTICE: ixgbe3: link up, , full duplex
    Sep 14 00:22:31 kkvs1a ixgbe: [ID 611667 kern.info] NOTICE: ixgbe1: link down
    Sep 14 00:22:31 kkvs1a ixgbe: [ID 611667 kern.info] NOTICE: ixgbe3: link down
    /opt/oracle/product/10.2.0/crs/log/node1/alertkk1a.log
    ==============================================
    2013-09-14 00:22:05.180
    [cssd(12561)]CRS-1612:node kk1b (2) at 50% heartbeat fatal, eviction in 14.251 seconds
    2013-09-14 00:22:12.180
    [cssd(12561)]CRS-1611:node kk1b (2) at 75% heartbeat fatal, eviction in 7.251 seconds
    2013-09-14 00:22:13.180
    [cssd(12561)]CRS-1611:node kk1b (2) at 75% heartbeat fatal, eviction in 6.251 seconds
    2013-09-14 00:22:17.179
    [cssd(12561)]CRS-1610:node kk1b (2) at 90% heartbeat fatal, eviction in 2.251 seconds
    2013-09-14 00:22:18.180
    [cssd(12561)]CRS-1610:node kkvs1b (2) at 90% heartbeat fatal, eviction in 1.251 seconds
    This clearly shows CSSD of node kkvs1a has given node eviction message to kkvs1b node.
    I got following messages on the instance which got rebooted:
    ASM alert log:
    Sat Sep 14 00:22:25 IST 2013
    Error: KGXGN aborts the instance (6)
    Sat Sep 14 00:22:25 IST 2013
    Errors in file /opt/oracle/admin/+ASM/bdump/+asm2_lmon_8527.trc:
    ORA-29702: error occurred in Cluster Group Service operation
    LMON: terminating instance due to error 29702
    A network fluctuation shouldn't give reboot like this. Then why oracle design like this way? Is this a bug? My oracle version is: 10.2.0.5.0
    Could you tell me the other possible situations when 1 RC instance reboots other RAC instacne.

    What you are describing is the expected behaviour: if your interconnect fails, you will have a node eviction. Releases < 11.2.0.2 evict a node by reboot, which can fix the problem: the NIC may come up correctly when the machine re-starts. Releases >= 11.2.0.2 can often evict without a re-boot. But either way, if your interconnect goes down, a node must be evicted to prevent uncoordinated disc writes.
    If you are interested, you can find some discussion and demos of this in a series of webcasts I've recorded,
    Free Oracle Database Tutorials for Administration and Developers
    If you really don't like this behaviour and the problems are transient, you can try 'raising the CSS MISSCOUNT parameter.
    John Watson
    Oracle Certified Master DBA

  • Migration from Single Node to RAC Node

    Hi,
    We are planning to migrate the Database from Single-Node to RAC Node. Are there any checklist list to be considered regarding Performance, System and Database ( or any other topic), before migrating to RAC.
    Thanks

    If it is already the same version, you will need to focus any "single-threadedness" of the application like sequences that are mandatory sequential, "semaphore-style" locking etc...
    My experience is that going RAC and in particular to ASM can give a performance boost. If it is the same version (11gR2 for example) then any statistics-related performance issues will still be there.

  • Domain Name change on 1 node of RAC

    Is there oracle note for changing domain name on RAC?
    Edited by: FrodoDot on Jan 9, 2010 5:55 PM

    FrodoDot wrote:
    Is there oracle note for changing domain name on RAC?
    Edited by: FrodoDot on Jan 9, 2010 5:55 PMWhat oracle version?
    If your RAC registered hostname + domain, this case like you change hostname
    Check:
    $ olsnodes
    Changing Hostnames in Oracle RAC
    http://www.pythian.com/news/482/changing-hostnames-in-oracle-rac/
    1 node of RAC -> you may delete node/change hostname/add node
    If domain, not registered in RAC... you may change it ... (no remove node or reinstall RAC)

  • Diffrence between  10g R1 RAC and 10g R2 RAC

    Good day to all,
    Any one here knows the diffrence between 10g R1 RAC and 10g R2 RAC in terms of Installation , Backup and recovery , Performance tunning and more ..............
    Please this treat this information is urgent
    Cheers
    Syed

    Please this treat this information is urgentOk, then what about the New features doc of 10gR2 reading urgently :
    http://download.oracle.com/docs/cd/B19306_01/server.102/b14214/chapter1.htm#NEWFTCH1
    Nicolas.

  • Manual of adding the new node on RAC with ASM

    Hello everbody
    Someone have the manual of the adding a new node on RAC with ASM for Solaris ?
    regards
    Spaulonci

    Go to http://www.oracle.com/technology/documentation/index.html, select your unknown database version and search for a manual named 'Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide'.
    Werner

Maybe you are looking for