Configuring our RAC environment Questions

The environment consists of Sun Solaris 10, Veritas, and 10g RAC:
Questions:
I need to know the settings and configuration of the entire software stack that will be the foundation of the oracle RAC environment....Network configurations, settings and requirements for any networks including the rac network between servers
How to set up the solaris 10k structures: what goes into the global zones, the containers, the resource groups, RBAC roles, SMF configuration, schedulers?
Can we use zfs, and if so, what configuration, and what settings?
In addition, these questions I need answers to:
What I am looking for is:
-- special hardware configuration issues, in particular the server rac interconnect. Do we need a hub, switch or crossover cables configured how.
-- Operating System versions and configuration. If it is Solaris 10, then there are more specific requirements: how to handle smf, containers, kernel settings, IPMP, NTP, RBAC, SSH, etc.
-- Disk layout on SAN, including a design for growth several years out: what are the file systems with the most contention, most use, command tag depth issues etc. (can send my questionnaire)
-- Configuration settings\ best practices for Foundation suite for RAC and Volume manager
-- How to test and Tune the Foundation suite settings for thru-put optimization. I can provide stats from the server and the san, but how do we coordinate that with the database.
-- How to test RAC failover -- what items will be monitored for failover that need to be considered from the server perspective.
-- How to test data guard failures and failover -- does system administration have to be prepared to help out at all?
-- How to configure Netbackup --- backups

Answering all these questions accurately and correctly for you implementation might be a bit much for a forum posting.
First I'd recommend accessing the Oracle documentation on otn.oracle.com. This should get you the basics about what is supported for the environment your looking to set up, and go a long way to answering your detailed questions.
Then I'd break this down into smaller sets of specific questions and try and get the RAC axters on the RAC forum to help out.
See: Community Discussion Forums » Grid Computing » Real Application Clusters
Finally Oracle Support via Metalink should be able to fill in any gaps int he documentation.
Good luck on your project,
Tony

Similar Messages

  • Question for install repository on RAC environment

    hi all,
    Our RAC has two nodes: node1(primary) and node2. Each node has two database instances: odsstag and ods. I've finished with odsstag, and
    now I am testing on ods. I create a new repository owner on node1.ods, and get
    node2.ods registered via repository assisstant. My question is will this change
    the value for rtrepos.properties file? I mean do I need to copy the file to
    node2 again?
    thanks

    Hi,
    you should use node net service name
    Regards,
    Oleg

  • Questions on sqlnet.ora, listener.ora files in RAC environment.

    Experts,
    I've some confusion with below files in RAC environment.
    sqlnet.ora
    listener.ora
    These files are available in two locations: <GRID_HOME> & <DB_HOME>.
    My questions:
    1. Why do we have two versions of files ?
    2. When I query lsnrctl status from BOTH the homes, it says it is using listener.ora from <GRID_HOME> as shown below.
    Listener Parameter File D:\app\11.2.0\grid\network\admin\listener.ora
    3. What is the use of files which are in <DB_Home>
    4. If you make some changes to listener using "Netmgr" tool, we expect it will update listener.ora in <GRID_HOME>. Interestingly, it is changing the contents of listener.ora in <DB_HOME> .
    Can anyone please clarify it ?
    Thanks in advance.

    859875 wrote:
    1. Why do we have two versions of files ? In the past, the CRS s/w did not include ASM (ASM did not provide support for cluster voting and registration disks). Thus the networking components such as SQL*Net and the Listener were not part of the CRS installation.
    With Grid Infrastructure, ASM supports cluster voting and registration disks and is recommended to be used for that (as oppose to the old style of raw disks or using an external cluster-based cooked file system like <i>ocfs</i>). And with ASM comes the SQL*Net networking layer and s/w (such as the Listener). As ASM ships with Grid Infrastructure, it now also includes the same networking layer as what the RDBMS installation will. Thus both <GRID_HOME> and <DB_HOME> will contain the same networking components.
    However, only a single Listener is for example needed. And that can only run from a single base location. So for operational use, only one version will be actively in use.

  • Question on pfile in RAC environment

    DB version:10GR2,11GR2
    OS Version: Solaris, AIX, Linux
    Lets say i have a 2 node RAC environment.
    DB name is : jerry
    I have a datagroup called DATA7
    Node1's pfile would only contain a single like as shown below
    $ cat initjerry1.ora
    SPFILE='+DATA7/jerry/spfilejerry.ora'Likewise, for Node2
    $ cat initjerry2.ora
    SPFILE='+DATA7/jerry/spfilejerry.ora'Am i right?

    yes, this works. But I don't think this pfile is even needed because afair srvctl will know to use the spfile on ASM. I remember that I had some trouble with one install a while ago because there was also an spfile on each server. This would not get touched by automatic startup and shutdown but when I started the instance manually with sqlplus (and without arguments) this spfile would be used and it caused a lot of confusion for me.
    Bjoern

  • Question for repository installation on RAC environment

    Hi guys,
    our RAC enviroment has two nodes: node1 and node2. The tnsnames file has 3 net servcie names. They are for node1, node2, and node(node1 and node2). Here is the example:
    node1 =
    (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1521))
    (CONNECT_DATA =
    (SERVER = DEDICATED)
    (SERVICE_NAME = service_name)
    (INSTANCE_NAME = node1)
    node2 =
    (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = host2)(PORT = 1521))
    (CONNECT_DATA =
    (SERVER = DEDICATED)
    (SERVICE_NAME = service_name)
    (INSTANCE_NAME = node2)
    node =
    (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = host2)(PORT = 1521))
    (LOAD_BALANCE = yes)
    (CONNECT_DATA =
    (SERVER = DEDICATED)
    (SERVICE_NAME = service_name)
    When I am installing repository owner on node1, do I need to use net service name? if need, what name to use here? node1 or node?
    when I register node2, I know I need to use the net servcie name, according to the installation guide. So which name do i use in this step? node1, node2 or node?
    thanks in advance.

    Hi,
    you should use node net service name
    Regards,
    Oleg

  • ASM vs RAID for 11gR2 RAC Environment

    Hi There!
    We are planning to install 11GR2 RAC with two nodes Cluster on LINUX in Our Environment.
    Operating System: OEL 5.4
    In our hardware we got two dell Servers with 16GB RAM on each plus On SAN side we have only 8 disk (173GB) left for RAC Cluster Setup. I am going to create to database (LIVE/UAT) on This Cluster Setup. Currently Our Production DB size is 6GB and I assume for coming 5 year it will not go beyond 100GB And I keep UAT size 15GB fix with No changes.So how you get the best ASM performance by using my all Resources.
    My question:
    1)     Which is best solution for ASM and RAID in our storage Environment?
    2)     How many Disk group I Create for Both Databases (UAT/LIVE)?
    3)     How many disks should I allocate in Each Disk Group with which RAID Option or if any suggesting for LUN, How do I create LUNS across the Disk which I got?
    4)     I know oracle recommended Two DISK Group DATA&FRA is there any other suggestion for CRS, REDO, and TEMP FILE?
    Thanks for your Assintance.
    Hemesh.

    My first question was : Which RAID Option(0,1,5,0+1) I choose with ASM ?Well, it doesnt matter for ASM. At least in your configuration with 8 disks.
    RAID0is not an option - forget about it. RAID1 (or combined with more than two disks and an overlayed RAID0 which makes an RAID 1+0) might be an option for write-intensive databases. RAID5 is more for read-intensive due to the RAID5-write-hole but offers "more" capacity at the cost of slower write speed.
    I recommended to stick with RAID1 (thus mirroring two disks) and exporting them to ASM rather than creating one big RAID1+0 over all of your disks and exporting the storage as one big chuck to ASM for manageability. If you want to add storage lateron your perfect in line with Oracles recommendations to have equal size LUNs in ASM with two mirrored disks. If you create on big RAID 1+0 and lateron add two disks you have a LUN of 600 GB size and one of 170 GB size...thats a big mismatch.
    But If i create TWO disk group then, is there good practice to offer them to both (UAT/LIVE) databases.?Normally there is a separation between UAT and P on storage and on server level. In your case it might be "ok" to place everything in the same disk group. This mainly depends on which database puts the most load on the disk subsystem.
    Ronny Egner
    My Blog: http://blog.ronnyegner-consulting.de

  • Cssd does not start in non-RAC environment Thus we can not bring up ASM

    Non-RAC environment
    ASM version = 11.1.0.7
    HP-UX Itanium 11.23
    After power outage, CSSD does not start on non-RAC environment
    Running as root "/sbin/init.d/init.cssd start" does not start cssd
    Oracle support tried "$ASM_HOME/bin/localconfig delete" and "$ASM_HOME/bin/localconfig add"
    but it did not start CSS
    Oracle support tried "$ASM_HOME/bin/localconfig reset $ASM_HOME"
    It started the CSSD and the "crsctl check css" came back with CSS is healthy
    But around 1 minute later it rebooted the server and when it came up again CSS does not start.
    They checked /etc/inittab and it looked fine.
    Before the reboot we saw this message in the /var/adm/syslog/OLDsyslog.log:
    Cluster Ready Services completed waiting on dependencies
    Again it is a NON-RAC environment. We only need CSSD for ASM. We do not have CRS installed on this server.
    Our test system has been down for a week and we did not get the resolution from Oracle support yet !
    Any pointers are greately appriciated.
    Thanks,
    Dzung

    Here is the message in $ASM_HOME/log/<hostname>/alert<hostname>.log :
    2010-07-16 09:42:02.956
    [client(11930)]CRS-1006:The OCR location /db/app/oracle/product/11.1/cdata/localhost/local.ocr is inacce
    ssible. Details in /db/app/oracle/product/11.1/log/rmodbd01/client/clscfg10.log.
    2010-07-16 09:42:02.971
    [client(11930)]CRS-1006:The OCR location /db/app/oracle/product/11.1/cdata/localhost/local.ocr is inacce
    ssible. Details in /db/app/oracle/product/11.1/log/rmodbd01/client/clscfg10.log.
    2010-07-16 09:42:03.054
    [client(11930)]CRS-1013:The OCR at /db/app/oracle/product/11.1/cdata/localhost/local.ocr was successfull
    y formatted using version 2. Ignore earlier CRS-1006 messages if any.
    2010-07-16 09:42:46.379
    [cssd(12297)]CRS-1601:CSSD Reconfiguration complete. Active nodes are rmodbd01 .
    Here is the message in $ASM_HOME/log/<hostname>/cssd/cssdOUT.log:
    setsid: failed with -1/1
    s0clssscGetEnvOracleUser: calling getpwnam_r for user oracle
    s0clssscGetEnvOracleUser: info for user oracle complete
    07/16/10 09:42:36: CSSD starting
    Here is the message in $ASM_HOME/log/<hostname>/cssd/ocssd.log:
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmCompareSwapEventValue: changed CmInfo State val 7, from 6, changes 6
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmSetVersions: properties common to all peers: 1,2,3,4,5,6,7
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmEstablishMasterNode: MASTER for 174732166 is node(0) birth(174732166)
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmChangeMasterNode: requeued 0 RPCs
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmCompareSwapEventValue: changed CmInfo State val 8, from 7, changes 7
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmMasterCMSync: Synchronizing group/lock status
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmMasterSendDBDone: group/lock status synchronization complete
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmCompareSwapEventValue: changed CmInfo State val 9, from 8, changes 8
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssgmCompareSwapEventValue: changed CmInfo State val 10, from 9, changes 9
    [    CSSD]CLSS-3000: reconfiguration successful, incarnation 174732166 with 1 nodes
    [    CSSD]CLSS-3001: local node number 0, master node number 0
    [    CSSD]2010-07-16 09:42:46.378 [18] >TRACE: clssscSAGEInitFenceCompl: Completing kgzf fence initialization
    [    CSSD]2010-07-16 09:42:46.394 [12] >TRACE: clssgmUpdateEventValue: Client listener incarn val 174732166, changes 1
    [    CSSD]2010-07-16 09:42:46.395 [12] >TRACE: clssgmAllocProc: (60000000003c7120) allocated
    [    CSSD]2010-07-16 09:42:46.395 [12] >TRACE: clssgmAllocProc: (60000000003c73a0) allocated
    [    CSSD]2010-07-16 09:42:46.396 [14] >TRACE: Connect request from user oracle
    [    CSSD]2010-07-16 09:42:46.396 [14] >TRACE: Connect request from user root
    [    CSSD]2010-07-16 09:42:46.397 [12] >TRACE: clssgmClientConnectMsg: properties of cmProc 60000000003c7120 - 1,2,3
    [    CSSD]2010-07-16 09:42:46.397 [12] >TRACE: clssgmClientConnectMsg: Connect from con(60000000003b2810) proc(60000000003c7120) pid(12350) version 11:1:1:4
    [    CSSD]2010-07-16 09:42:46.397 [12] >TRACE: clssgmClientConnectMsg: properties of cmProc 60000000003c73a0 - 1,2,3
    [    CSSD]2010-07-16 09:42:46.397 [12] >TRACE: clssgmClientConnectMsg: Connect from con(60000000003b2990) proc(60000000003c73a0) pid(12131) version 11:1:1:4
    [    CSSD]2010-07-16 09:42:46.402 [12] >TRACE: clssgmRegisterClient: proc(1/60000000003c7120), client(1/600000000096e7c0)
    [    CSSD]2010-07-16 09:42:46.402 [12] >TRACE: clssgmExecuteClientRequest: GRKJOIN recvd from client 1 (600000000096e7c0)
    [    CSSD]2010-07-16 09:42:46.402 [12] >TRACE: clssgmJoinGrock: local grock CSS_INTERNAL_NODE_GROUP new client 600000000096e7c0 with con 60000000003b2b10, requested num 0
    [    CSSD]2010-07-16 09:42:46.402 [12] >TRACE: clssgmAddNodeGrpMember: member (60000000009e0030) added
    [    CSSD]2010-07-16 09:42:46.403 [12] >TRACE: clssgmGroupState: requested group state of group localhost_NG, member count 0
    [    CSSD]2010-07-16 09:42:46.403 [12] >TRACE: clssgmGroupState: requested group state of group localhost_NG, member count 0
    [    CSSD]2010-07-16 09:42:46.404 [12] >TRACE: clssgmDeadProc: proc 60000000003c73a0
    [    CSSD]2010-07-16 09:42:46.404 [12] >TRACE: clssgmDestroyProc: cleaning up proc(60000000003c73a0) con(60000000003b2990) skgpid ospid 12131 with 0 clients, refcount 0
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmGroupState: requested group state of unknown group MASTER#DISKMON#GROUP
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmGroupState: requested group state of group MASTER#DISKMON#GROUP, member count 0
    [    CSSD]2010-07-16 09:42:46.425 [18] >TRACE: KGZF: context successfully initialized, API version 1.4, using pipe default
    [    CSSD]2010-07-16 09:42:46.425 [18] >TRACE: clssscSAGEInitFenceCompl: kgzf fence initialization successfully completed
    [    CSSD]2010-07-16 09:42:46.425 [18] >TRACE: clssgmReconfigThread: CSS/GM open for global group registrations
    [    CSSD]2010-07-16 09:42:46.425 [18] >TRACE: clssgmReconfigThread: completed for reconfig(174732166), with status(1)
    [    CSSD]2010-07-16 09:42:46.425 [18] >TRACE: clssgmUpdateEventValue: Reconfig Event val 2, changes 2
    [    CSSD]2010-07-16 09:42:46.425 [1] >TRACE: clssgmWaitOnEventValue: after Reconfig Event val 2, eval 2 waited 47
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmRegisterClient: proc(1/60000000003c7120), client(2/600000000096e870)
    [    CSSD]2010-07-16 09:42:46.425 [1] >TRACE: clssgmUpdateEventValue: Reconfig Event val 0, changes 3
    [    CSSD]2010-07-16 09:42:46.425 [1] >TRACE: clssgmStartNMMon: previous reconfig complete, incarnation(174732166)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmExecuteClientRequest: GRKJOIN recvd from client 2 (600000000096e870)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmJoinGrock: global grock MASTER#DISKMON#GROUP#MX new client 600000000096e870 with con 60000000003b2990, requested num -1
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmAddGrockMember: adding member to grock MASTER#DISKMON#GROUP#MX
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmAddMember: granted member(0) flags(0x2) node(0) grock (6000000000989e50/MASTER#DISKMON#GROUP#MX)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmQueueGrockEvent: lockName(MASTER#DISKMON#GROUP#MX) type(3) count (1/1) xwaiters(1) event(1) to memberNo(0)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmCommonAddMember: global lock grock MASTER#DISKMON#GROUP#MX member(0/Local) node(0) flags 0x2 0x2
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmRegisterClient: proc(1/60000000003c7120), client(3/600000000096e920)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmExecuteClientRequest: GRKJOIN recvd from client 3 (600000000096e920)
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmJoinGrock: global grock MASTER#DISKMON#GROUP new client 600000000096e920 with con 60000000003b2bd0, requested num 0
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmAddGrockMember: adding member to grock MASTER#DISKMON#GROUP
    [    CSSD]2010-07-16 09:42:46.425 [12] >TRACE: clssgmAddMember: new master 0 for group(MASTER#DISKMON#GROUP)
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmAddMember: Adding fencing for member 0, group MASTER#DISKMON#GROUP, death 1, SAGE 0
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmAddMember: member (0/60000000009e0230) added. pbsz(72) prsz(0) flags 0x0 to grock (600000000098a170/MASTER#DISKMON#GROUP)
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmQueueGrockEvent: groupName(MASTER#DISKMON#GROUP) count(1) master(0) event(1), incarn 1, mbrc 1, to member 0, events 0x78, state 0x0
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmCommonAddMember: global group grock MASTER#DISKMON#GROUP member(0/Local) node(0) flags 0x0 0x1e00
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmExecuteClientRequest: GRKEXIT recvd from client 2 (600000000096e870)
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmExitGrock: client 2 (600000000096e870), grock MASTER#DISKMON#GROUP#MX, member 0
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmUnregisterPrimary: Unregistering member 0 (60000000009e0130) in global grock MASTER#DISKMON#GROUP#MX
    [    CSSD]2010-07-16 09:42:46.426 [12] >TRACE: clssgmRemoveMember: grock MASTER#DISKMON#GROUP#MX, member number 0 (60000000009e0130) node number 0 state 0x14 member refcnt 0 grock type 3
    [    CSSD]2010-07-16 09:42:48.405 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:42:48.405 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:42:52.444 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:42:52.444 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:42:56.484 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:42:56.484 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:00.516 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:00.516 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:04.563 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:04.563 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:08.603 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:08.603 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:12.643 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:12.643 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:16.676 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:16.676 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:20.723 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:20.723 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:24.762 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:24.762 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:28.802 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:28.802 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:32.842 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:32.842 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:36.882 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:36.882 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:40.922 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:40.922 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:44.964 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:44.964 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:49.002 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:49.002 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:53.043 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:53.043 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:57.085 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:43:57.085 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:43:58.354 [12] >TRACE: clssgmAllocProc: (60000000003c7ee0) allocated
    [    CSSD]2010-07-16 09:43:58.355 [14] >TRACE: Connect request from user oracle
    [    CSSD]2010-07-16 09:43:58.356 [12] >TRACE: clssgmClientConnectMsg: properties of cmProc 60000000003c7ee0 - 1,2,3
    [    CSSD]2010-07-16 09:43:58.356 [12] >TRACE: clssgmClientConnectMsg: Connect from con(60000000003b2990) proc(60000000003c7ee0) pid(13157) version 11:1:1:4
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmRegisterClient: proc(2/60000000003c7ee0), client(1/600000000096e870)
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmExecuteClientRequest: GRKJOIN recvd from client 1 (600000000096e870)
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmJoinGrock: global grock CLSSSCHECK_GROUP new client 600000000096e870 with con 60000000003b2c90, requested num -1
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmAddGrockMember: adding member to grock CLSSSCHECK_GROUP
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmAddMember: new master 0 for group(CLSSSCHECK_GROUP)
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmAddMember: Adding fencing for member 0, group CLSSSCHECK_GROUP, death 1, SAGE 0
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmAddMember: member (0/60000000009e0130) added. pbsz(8) prsz(8) flags 0x0 to grock (6000000000989e50/CLSSSCHECK_GROUP)
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmQueueGrockEvent: groupName(CLSSSCHECK_GROUP) count(1) master(0) event(1), incarn 1, mbrc 1, to member 0, events 0x0, state 0x0
    [    CSSD]2010-07-16 09:43:58.360 [12] >TRACE: clssgmCommonAddMember: global group grock CLSSSCHECK_GROUP member(0/Local) node(0) flags 0x0 0x0
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmExecuteClientRequest: GRKEXIT recvd from client 1 (600000000096e870)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmExitGrock: client 1 (600000000096e870), grock CLSSSCHECK_GROUP, member 0
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmUnregisterPrimary: Unregistering member 0 (60000000009e0130) in global grock CLSSSCHECK_GROUP
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmRemoveMember: grock CLSSSCHECK_GROUP, member number 0 (60000000009e0130) node number 0 state 0x14 member refcnt 0 grock type 2
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmRegisterClient: proc(2/60000000003c7ee0), client(2/600000000096e870)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmExecuteClientRequest: GRKJOIN recvd from client 2 (600000000096e870)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmJoinGrock: global grock CLSSSCHECK_LOCK new client 600000000096e870 with con 60000000003b2c90, requested num -1
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmAddGrockMember: adding member to grock CLSSSCHECK_LOCK
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmAddMember: granted member(0) flags(0x2) node(0) grock (6000000000989e50/CLSSSCHECK_LOCK)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmQueueGrockEvent: lockName(CLSSSCHECK_LOCK) type(3) count (1/1) xwaiters(1) event(1) to memberNo(0)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmCommonAddMember: global lock grock CLSSSCHECK_LOCK member(0/Local) node(0) flags 0x2 0x2
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmExecuteClientRequest: GRKEXIT recvd from client 2 (600000000096e870)
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmExitGrock: client 2 (600000000096e870), grock CLSSSCHECK_LOCK, member 0
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmUnregisterPrimary: Unregistering member 0 (60000000009e0130) in global grock CLSSSCHECK_LOCK
    [    CSSD]2010-07-16 09:43:58.361 [12] >TRACE: clssgmRemoveMember: grock CLSSSCHECK_LOCK, member number 0 (60000000009e0130) node number 0 state 0x14 member refcnt 0 grock type 3
    [    CSSD]2010-07-16 09:43:58.362 [12] >TRACE: clssgmDeadProc: proc 60000000003c7ee0
    [    CSSD]2010-07-16 09:43:58.362 [12] >TRACE: clssgmDestroyProc: cleaning up proc(60000000003c7ee0) con(60000000003b2990) skgpid ospid 13157 with 0 clients, refcount 0
    [    CSSD]2010-07-16 09:44:01.125 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:01.125 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:05.164 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:05.164 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:09.196 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:09.196 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:13.236 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:13.236 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:17.284 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:17.284 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:21.322 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:21.322 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:25.316 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:25.316 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:30.333 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:30.333 [8] >TRACE: clssnmSendingThread: sent 5 status msgs to all nodes
    [    CSSD]2010-07-16 09:44:34.324 [8] >TRACE: clssnmSendingThread: sending status msg to all nodes
    [    CSSD]2010-07-16 09:44:34.324 [8] >TRACE: clssnmSendingThread: sent 4 status msgs to all nodes
    Here is the message in $ASM_HOME/log/<hostname>/diskmon/client.log:
    [ DISKMON] 07/16/2010 18:33:32.050 dskm_send_command: process 23246 sending command 8 to master diskmon listening on default pipe
    [ DISKMON] 07/16/2010 18:33:32.080 dskm_send_command3: skgznp_connect failed with error 56815
    [ DISKMON] 07/16/2010 18:33:32.080 dskm_send_command3: error 56815 at location skgznpcon6 - connect() - Connection refused
    Here is the message in $ASM_HOME/log/<hostname>/diskmon/diskmonOUT.log:
    setsid: failed with -1/1
    dskm_getenv_oracle_user: calling getpwnam_r for user oracle
    dskm_getenv_oracle_user: info for user oracle complete
    07/16/10 18:33:31: Master Diskmon starting
    Here is the message in $ASM_HOME/log/<hostname>/diskmon/diskmon.log:
    [ DISKMON] 07/16/2010 09:42:35.573 dskm main: starting up
    [ DISKMON] 07/16/2010 09:42:35.588 [12350:3] dskm_rac_thrd_main: running
    [ DISKMON] 07/16/2010 09:42:35.588 [12350:1] dskm_rac_thrd_creat2: got the post from the css event handling thread
    [ DISKMON] 07/16/2010 09:42:35.589 [12350:1] dskm main: startup complete
    [ DISKMON] 07/16/2010 09:42:35.589 [12350:1] listening on -> default pipe
    [ DISKMON] 07/16/2010 09:42:35.792 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:36.385 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:36.906 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:37.426 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:37.945 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:38.465 clsc_connect: (6000000000700420) no listener at (ADDRESS=(PROTOCOL=ipc)(KEY=OCSSD_LL_rmodbd01_))
    [ DISKMON] 07/16/2010 09:42:46.376 [12350:1] dskm_slave_thrd_creat: thread created
    [ DISKMON] 07/16/2010 09:42:46.376 [12350:11] dskm_slave_thrd_main1: slave 0 running
    [ DISKMON] 07/16/2010 09:42:46.376 [12350:11] dskm_process_msg5: received msg type KGZM_IDENTIFY (0x0001)
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_proc_identify8: client kgzf/12297, version 0x01020000, slave 0, reid cid=3e0391f05e06cfafbf7419d7cf085a44,icin=174732166,nmn=0,lnid=174732166,gid=0,gin=0,gmn=0,umemid=0,opid=0,opsn=0,lvl=node
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_send_version1:
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_send_version4: done
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_process_msg7: processed msg 0 type KGZM_IDENTIFY (0x0001), retcode 0
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_process_msg5: received msg type KGZM_KGZF_HANDSHAKE (0x0010)
    [ DISKMON] 07/16/2010 09:42:46.389 [12350:11] dskm_proc_kgzf_handshake3: client kgzf/12297, kgzf version 0x00010004, slave 0
    [ DISKMON] 07/16/2010 09:42:46.401 [12350:3] dskm_clss_ini2: successful clsssinit(), clssvers 2.1
    [ DISKMON] 07/16/2010 09:42:46.402 [12350:3] dskm_clss_ini12: node rmodbd01 (0) registered in cluster
    [ DISKMON] 07/16/2010 09:42:46.403 [12350:3] dskm_reid_ini12: diskmon reid cid=3e0391f05e06cfafbf7419d7cf085a44,icin=174732166,nmn=0,lnid=174732166,gid=-1,gin=-1,gmn=-1,umemid=-1,opid=12350,opsn=1279291355,lvl=process
    [ DISKMON] 07/16/2010 09:42:46.424 [12350:3] dskm_sage_config: CELL storage configuration file cellinit.ora not found
    [ DISKMON] 07/16/2010 09:42:46.425 [12350:3] dskm_nfy_kgzf1: notified thread kgzf enabled
    [ DISKMON] 07/16/2010 09:42:46.425 [12350:11] dskm_proc_kgzf_handshake5: got the post from the hb thread
    [ DISKMON] 07/16/2010 09:42:46.425 [12350:11] dskm_proc_kgzf_handshake9: done, kgzf enabled
    [ DISKMON] 07/16/2010 09:42:46.425 [12350:11] dskm_process_msg7: processed msg 0 type KGZM_KGZF_HANDSHAKE (0x0010), retcode 0
    [ DISKMON] 07/16/2010 09:42:46.426 [12350:3] dskm_rac_ini22: CELL storage not configured in the cluster; registered in group MASTER#DISKMON#GROUP as memno 0 (GSDGRPSZ 512)

  • Oracle Streams on a Rac Environment

    Hi
    I have some questions with respect to Setting up Streams on a rac Environment.Would appreciate a quick response as I need the answers by tommorrow.Any help would be greatly appreciated.Here are the questions
    1> Do we have to create capture process for each active instance on only 1 capture process will do?
    2> If yes then do they need to have a seperate queue for each one?
    3> How will the apply process access multiple capture process and the propogation take place?
    4> can only 2 tables in the source be replicated instead of the entire database?
    5> In case if we use a push job if both the primary and secondary go down how can we move to the third instance and use it?
    6> If the instance goes down do we have to restart the capture process once again?
    7>What is the best suited for rac - ASM/RAW FILES with respect to Streams?
    Regards
    Shweta

    Streams in 9iR2 RAC environment mines only from archive logs not online redo logs. This restriction is lifted in 10g RAC. If you choose to go thru the downstream capture route in 10g then you can only mine from archive logs in 10gR1.
    Having said the above here are my answers:
    1> Do we have to create capture process for each active instance or only 1 capture process will do?
    You can run multiple capture processes each on difference instance in RAC. Unless you have a requirement to do so, a single capture process would suffice. The in-memory queue should also be on the same instance as the capture process is running from.
    2> If yes then do they need to have a seperate queue for each one?
    YES
    3> How will the apply process access multiple capture process and the propogation take place?
    Propagation is from a source queue to the destination queue. If the destination is a single instance database, then you can direct propagations for all of your capture(s) into a single apply queue. If the destination is also RAC then you can run multiple apply processes on each node and apply changes for specific set of tables. Maintenance would be something to think about here along with what happens when one node goes down.
    4> can only 2 tables in the source be replicated instead of the entire database?
    YES. Streams is flexible to let you decide what level you want to replicate.
    5> In case if we use a push job if both the primary and secondary go down how can we move to the third instance and use it?
    In theory propagation is a push job. There are certain things you need to configure correctly. If done, then you can move the entire streams configuration to any of the surviving node(s).
    6> If the instance goes down do we have to restart the capture process once again?
    In 9iR2 you have to restart the streams processes. In 10g the streams processes automatically migrate and restart at the new "owning" instance. In both versions, Queue ownership is transferred automatically to the surviving instance.
    7> What is the best suited for rac - ASM/RAW FILES with respect to Streams?
    Streams is independent of the storage system you use. I cannot think of any correlation here.

  • AWR on a RAC Environment

    Hello Knowledgeable Guys of Oracle Forums...
    Finally, our management has bought a license for AWR (after years of using the system!!!) because the database performance has been degrading for quite a while....goodbye to statspack!
    I have a question on AWR collection on RAC..
    We have a 5 Node RAC Cluster working on Oracle 10g R2 on Linux 5.1...
    I would like to know:
    1. How to collect AWR snapshots in a RAC environment? Do I need to collect AWR per node (per instance)?
    2. Is there a way to collect AWR for the entire RAC cluster (Node 1 to Node 5)?
    3. What is the proper way (best way) to collect AWR reports in our 5-node RAC?
    4. How does AWR work on RAC?
    Any sample blogsites...or sample actual AWR collection that you use in your system...
    Thank you

    Hi
    1. How to collect AWR snapshots in a RAC environment? Do I need to collect AWR per node (per instance)?
    A: No. You should collect it at DATABASE level
    2. Is there a way to collect AWR for the entire RAC cluster (Node 1 to Node 5)?
    A: Yes. You can simple generate an html or text report for your RAC environment (eg: AWR report)
    3. What is the proper way (best way) to collect AWR reports in our 5-node RAC?
    A: You can use the snapshots to compare periods, or reports
    4. How does AWR work on RAC?
    A: AWR snapshots are collect at database level, and you can use this snapshot to generate your AWR reports.
    You can also take snapshot in a given moment and use them to reports.
    Exeamples:
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    * retention /interval in seconds
    Exec dbms_workload_repository.modify_snapshot_settings (retention=>43200, interval=> 60);
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    execute dbms_workload_repository.create_snapshot;
    TO GENERATE AWR REPORTS
    @?/rdbms/admin/awrrpt.sql
    Victor

  • Any major differences of exadata database, listener, processes than regular RAC environment?

    I would like to ask for any input regarding any major differences of exadata database, listener, processes than regular RAC environment.
    I know now the exadata not only have SCAN listener, but a lot other listeners. can expert here provide more details?
    Thanks

    We will use zfs to do backups, is that possible for the initiband listener to communicate with ZFS?  where I can find documents for zfs?
    The SDP (Infiniband) Listener is for client connections connecting to the database on Exadata over the SDP protocol on the Infiniband network. You should use the Infiniband network to connect the ZFS to Exadata and mount the ZFS shares to the Exadata compute nodes using DNFS; but this doesn't use the SDP listener because there is no database connection originating from the ZFS you are just backing up your databases to it. See the "Oracle ZFS Storage: FAQ: Exadata RMAN Backup with The Oracle ZFS Storage Appliance (Doc ID 1354980.1)" MOS note for good information and references regarding backing up from Exadata to ZFS.
    Plus how do I know we have exalogic?  I dont think we have one, but is there a way to check to be sure?
    Exalogic is another of Oracle's engineered systems. It contains integrated compute, network and storage - similar to Exadata - but is used for running application environments, specifically for fusion middleware (e.g. Weblogic) applications, instead of databases. It uses a ZFS storage appliance for the storage, as opposed to the storage cells on Exadata, and for virtualized environments uses the Exalogic Elastic Cloud software. You would know if you have one.
    So basically after oracle engineer installed onecommand and created sample database, as oracle dba, we can dbca to create a database just like regular RAC environment?  There is nothing specific on exadata perspective?
    Yes... Oracle on Exadata is still the same RDBMS - same Oracle Enterprise edition with the RAC option. The Exadata difference comes with the hardware integration and the storage cell software... the database software is the same.
    Another question is do I have to configure exadata specific parameters in order for all those features of smart scan, storage index, comrpession, etc work?
    Some Exadata features are mostly "black box" and work without any configuration others may take some configuration or tuning to take advantage of. For example, storage indexes are created dynamically on the storage cells... there is not much you can do to control them. For smart scans you need full table/index scans with direct path reads. So you need to tune for direct path reads. HCC requires setting up your tables/partitions to compress at one of the HCC compression levels and using direct path loads.

  • How to create a wallet in oracle RAC environment

    How to create a wallet in oracle RAC environment.
    While running following command "alter system set encryption key identified by "thalesdata4";
    I am getting error message "cannot auto create wallet" or "failed to open wallet.
    Please suggest correct way to create a wallet in RAC environment.
    Thanks
    Sudhir

    hi,
    please refer for detailed explanation
    Master Note for SSL Configuration in Fusion Middleware 11g [ID 1218695.1]
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  • How to create DIR/File on a raw device in RAC environment.

    Hi all,
    I use a shell script to create DIR and File on a raw device also it creates schema and tablespaces.
    I am facing problem in creating DIR and Files on raw device.
    One more thing, can multiple tablespaces be created on a raw device.
    Thanks & regards,
    Sanjeev

    Thanks for the response. Please help me further.
    About the Script - It asks for the path for creating DIR and uses shell command to create DIR. Later same path and DIR name is used to create Oracle DIR. Now in place of absolute path raw device name is passed. The same script is also used for creating tablespaces and schema.
    There is second script that is .sql script that creates external table in the newly created schema. All this has been working fine on single instance Oracle server. we have tested many times but fails in RAC environment when we use raw device.
    Question is - If I use filesystem will the external table's flat files and Directories be accessible to all the instances.
    I have one application written in java that would be clustered and running on these oracle servers. This application would be accessing those external tables and their flat files. Will there be a problem accessing these flat files accross the instances.
    Regards,
    Sanjeev.

  • IS IT SUPPORTED TO CENTRALLY MOUNT THE ORACLE_HOME IN A NON-RAC ENVIRONMENT

    SR 7250090.993 : (http://qmon.oraclecorp.com/qmon3/quickpicks.pl?t=t&q=7250090.993)
    Technical Summary:
    Customer is planing to install Oracle 10.2.0.4 and 11.1.0.x software on a Red Hat5 with NetApp storage.
    Customer came across the following :
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    mentioned in the 10gR2 documentation link :
    http://download.oracle.com/docs/cd/B19306_01/install.102/b15667/app_nas.htm#BCFIDEJA
    Requirements/Expectations:
    As the above statements, that customer came across is not present in 9i documentation, customer wants to understand if it is actually supported to centrally mount the 10g/11g ORACLE_HOME to many servers that are not RAC enabled.
    Also, I would like to understand if the statements in documentation indicate that it is not generally recommended centrally mount the 10g/11g ORACLE_HOME or does it mean that it is not supported to centrally mount the ORACLE_HOME in a non RAC environment?
    Please advice.

    The binaries (executables) in an Oracle home are "linked" (link edited?) to the OS libraries on each server where the software is installed.
    Unless the OS is IDENTICAL on each of the IDENTICAL(HW) servers -- that would share the Oracle home--, you could be in trouble.
    The only supported configuration (I know of) where the Oracle binaries are shared between servers is 9i RAC. On 10g RAC the binaries are installed on each server.
    Other wise I'd say it's NOT recommended, besides you don't save anything (execpt a cooupl of Gigs disk space).
    :p

  • ASM in a non-RAC environment

    Gurus,
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    Thanks.

    Any raid (that actually provides multiple disks in a
    LVM) will nullify the performance gains of raw that
    are associated with disk head contention.
    Any disk subsystem with front-end RAM cache will
    nullify the rest of the performance gains of raw
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    Any 'RAID-5 is good' argument under a database
    assumes large and efficient cache.Unfortunately, we can't just discount RAID-5, since it is far too cost-efficient an option these days, with 10, 20, 30+ TB databases. Plus, the storage vendors actually make it efficient enough that it performs almost as well as RAID 1+0.
    Multiple disks on the storage subsystem and RAM caches (for reads and writes) are still important and valuable performance enhancements. Remember that your storage subsystem is much more efficient at this than your database or server (since it's designed to do it!). True, it doesn't have knowledge of the database files, their content, and their usage, but you do, and can therefore intelligently configure the subsystem and place the data files.
    ASM does nothing more intelligent than stripe the data across all of the available disks. The best part about it is the ability to dynamically grow the groups. The problem with it is that it thwarts the read-ahead cache of the storage subsystem. And, while Oracle will intelligently 'read-ahead', it can't optimize where the heads are on the disk, or take into consideration the 10 other servers accessing the same storage subsystem.
    The problem with ASM doing the striping is that, for large databases, you will typically have hundreds of disks underneath the covers. If you gave the OS and then Oracle that many devices, what do you think would happen? It would step all over itself and seriously impair your ability to access the devices in parallel. Whereas, if you group 4 or 8 devices together, the storage subsystem will access them together in parallel for the OS.
    So, don't discount your storage box... But yeah, use RAID 1+0 rather than RAID-5 (4,3) when possible!

  • Discussion Forum Portlet on RAC Environment

    Hi
    I have installed Discussion Forum Portlet but I am seeing the following error intermittently:
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    I think the problem is because we have our database in a RAC environment where our Portal schema is. I am not sure how to specify the same details in the bc4j.xcfg file. The following are the details that I have in the bc4j.xcfg:
    <ConnectionDefinition name="df">
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    <ENTRY name="ConnectionType" value="JDBC"/>
    <ENTRY name="HOSTNAME" value="hamcheese.corp.ihop.com"/>
    <ENTRY name="DeployPassword" value="true"/>
    <ENTRY name="user" value="df"/>
    <ENTRY name="ConnectionName" value="df"/>
    <ENTRY name="SID" value="asdev1"/>
    <ENTRY name="password" value="df"/>
    <ENTRY name="JdbcDriver" value="oracle.jdbc.driver.OracleDriver"/>
    <ENTRY name="ORACLE_JDBC_TYPE" value="thin"/>
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    Please let me know.
    Thanks
    Hari

    Hi Hari,
    I am not sure how this would work, but i think you could try posting the issue on the Database / JDBC forums, specifying the issue as
    How to specify connect details for a RAC m/c in the Datasource file.
    You might get some answers there.
    thanks,
    Harsha

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