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  • We have moved to kindly check http://onlineAppsDBA.comin future
    Cloning / Staging Oracle 10g Application Server
    Friday, August 17, 2007
    Register for R12 upgrade

    This post is useful for those who are using 10g Application Server and want to clone 10g Application Server (Portal, BI or Forms and Reports) from Production to Test or Vice Versa.
    For cloning Oracle Applications 11i / E-Business Suite check

    Key points for cloning 10g Application Server (as of 19 August 2007)

    -You can clone middle tier installation of 10g AS (J2EE & Webcache, Portal & Wireless and BI & Forms)
    -You CANNOT clone
    ----i)Infrastructure Tier (MR & IM)
    ----ii)OAS Integration, BPEL Process Anaytics or BPEL process manager
    ----iii) Developer kit and SDK
    ----iv) Installation that includes workflow

    There is manual method to create replica of source instance in to target instance; called as Staging source infrastructure instance to target infrastructure instance.
    - Middle tier cloned instance must have different Instance Name than source instance name.
    - You can clone MT (Middle Tier) that is member of OracleAS Cluster or Farm but you must remove instance from OracleAS Cluster before beginning cloning operation.
    - Middle tier Cloning process does not configure Load Balancer. If you use one, you have to configure it manually including invalidation port

    - If in source instance, webcache is member of cache cluster, then target webcahe should be manually added in to cache cluster (or delete other cache cluster member info manually if you don't wish to target cloned instance as cache cluster)

    -During 10g AS middle tier cloning, source ORACLE_HOME is copied to destination ORACLE_HOME , then a set of scripts is used to update information in key configuration files of oracle application server middle tier (like hostname).

    Oracle 10g AS Middle Tier cloning process

    i) On source instance run (in $OH/clone/bin) (This script parses files, create archives using DCM, backs up required files, and run wireless clone assistant if wireless is enabled)

    ii) Copy ORACLE_HOME to destination location

    iii) On target instance run (this step invokes OUI which repeats all actions done during source instance installation)

    iv) In post clone phase, also does following post clone steps to make target cloned instance to a working state. These are
    ---a) setting new ORACLE_HOME in DCM
    ---b) update configuration file
    ---c) calls chgiphost command to change hostname and IP address in cloned instance
    ---d) If source instance was connected to OID (Portal/BI) then add information about clone in OID
    v) After cloning and starting services on target instance on unix you have to run (from root user)

    I hope by now its clear to you that cloning of middle tier on 10g Application Server is still not as mature as cloning Apps/E-Business Suite (11i or R12).
    In coming post I'll cover creating replica or staging 10g Application Server (Portal or BI) production instance to test instance so that users/groups, portal, BI, SSO and DAS data can be migrated from source instance to target instance for as close as possible copy of production instance.



    We have moved to

    kindly check in future

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    posted by Atul Kumar @ 10:02 PM  
    • At 8:57 PM, Anonymous Anonymous said…

      Atul - Great site!

      I have a 10gAS Infra and BI installation on a server. Infra and BI have sept. Oracle homes. I have a need to change the domain name of the server. I have read that Infra can't handle this. Do you know if this is true?

    • At 10:51 PM, Blogger Atul Kumar said…

      Yes Chris, changing domainname on INfra (IM+MR) is not supported but if the server for which you want to change contain IM only and MR is on another machine you can change domain name.

      For full explanation check oracle documentation at

    • At 8:54 PM, Anonymous Varun Singal said…

      Hi Atul,

      We want to migRate our application Server 10g (Infrastructure metadata repoistory,portal and mid tier) to Solaris 10 , we cannot keep same hostname FOR different server due to some applicatiosn still wants to run on previous system and do Oracle supplied methods
      Now , if I followup staging Test from Production document , there are lots of LDAP command and document seems some what complex .

      Pls provide some very simplfied steps to do so ..

      Thank you very much !

      Varun Singal
      Seattle, Washington , USA

    • At 8:58 PM, Anonymous Varun Singal said…

      Hi Atul,

      We want to migrate our application Server 10g (Infrastructure metadata repoistory,portal and mid tier) to Solaris 10 , we cannot keep same hostname FOR different server due to some applicatiosn still wants to run on previous system and do Oracle supplied methods
      Now , if I followup staging Test from Production document , there are lots of LDAP command and document seems some what complex .

      Pls provide some very simplfied steps to do so ..

      Thank you very much !

      Varun Singal
      Seattle, Washington , USA

    • At 9:01 PM, Blogger Atul Kumar said…

      Kindly raise all isssues/doubts in forum dedicated to Apps DBA's

    • At 9:05 PM, Blogger Kishore Jukanti said…

      Hi Atul,

      How to identify if we have IM and MR are on same machine.


    • At 11:20 PM, Anonymous Anonymous said…


      Sorry to bother you. I want to post a question but don't know how. I login dba but don't see any place to post.

      Thank you.

    • At 7:52 AM, Anonymous Anonymous said…

      How do we login to appsonline..???

    Post a Comment
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