Asynchronous multimaster replication and DB shutdown

Hi
I have a question:
What Happen if in replication environment (Asynch multimaster) master defenition site or other master site shutdown?
Are transaction remained in deffered queue?

Thank you, so I should write in documentation that shutdown Abort is forbidden

Similar Messages

  • Load Balancing and Asynchronous Multimaster Replication

    We are planning a new project with 2 server lines for load balancing reasons. We also plan to use sessions being valid for 30 minutes. Each of the 2 server lines has its own Oracle database (identical tables) for the transactions. Within one session the load balancing sends the user always to the same server line.
    Independant transactions are executed on both server lines.
    Is Asynchronous Multimaster Replication the adequate solution to have the two databases synchronized, what has to be considered (network, memory, cpu) or what else can (has to) be used ?
    We want to avoid a RAC solution because of the high costs.

    The two options that come to mind here are asynchronous multimaster replication and Oracle Streams.
    - What version of the Oracle database will you be using?
    - What sort of transaction volume do you anticipate? How much redo generation?
    - What sort of connection exists between the two machines?
    - Is there an upper limit on the time that can be taken to replicate a transaction from one machine to the other?
    Justin
    Distributed Database Consulting, Inc.
    http://www.ddbcinc.com/askDDBC

  • Comparision between Multimaster replication and data guard

    Hi,
    I have some questions regarding Multimaster Replication and Data Guard. Like
    *1.)* I have a web site having database in oracle 10.2.0 and multimaster replication configured on it. But whenever i need to change the structure of the tables i
    need to stop replication. So my web site is unavailable but my first priority is availability. So will it be useful for me to configure data guard.
    *2.)* I have configured data guard for testing . My Database is Named as Gard and physical standby database is like stan.
    it is working fine.
    suppose my main database server get corrupted i have no option to start main database server. Now i left with only standby server how i can start standby server
    as database main server.
    *3.)* Is there any if main database stop working Standby database start working as main without dba intervention.
    Thanks
    Umesh
    Edited by: Umesh Sharma on Jan 14, 2009 4:17 AM

    Hi Umesh,
    first of all you should be aware that Dataguard and Replication are two completely different things.
    While the database where you replicate to is always up and open in read write mode, a physical standby can either be recovering or open in read only mode.
    1.) I think from what you are telling you probably should consider using dataguard with a logical standby database, but be aware that there will be some limitations regarding datatypes.
    2.) you can do a failover or a switchover, depending on your database version switchback may not be possible
    3.) have a look at dataguard broker, you can use it to automate the failover
    Best regards,
    PP

  • Multimaster Replication and VPD in Oracle 10g R2

    Hello,
    I would like to know if MlitiMaster Replication supports the VPD(Virtual Private Database) Row level or column level access control? if so could some one point me to the right documentation? i searched Metalink and googled but unable to find any info regarding the support of VPD to replication.
    Thank you....

    Justin,
    we have streams and replication in our environment. our databases on window 2003 server and oracle 10gR2. my question is we are planning to implement the VPD on few tables which are already in replication group. We use 'REPADMIN' for replication. will it propagate the data for VPD columns that are in replication environment? how will this impact performance wise? I am trying to find also some Pros and Cons too.
    Thank you.

  • Multimaster replication survival & overhead

    Hi
    We are planning a system which should have a very high survivability rate. To this aim we consider using 3 oracle servers (8.1.7), located in 3 different sites, replicated in an asynchronous multimaster configuration, with a short refresh time. The nature of the application is that many small update transactions are happening constantly.
    Several questions:
    1. We are trying to assess the required bandwidth of the site-to-site network connection we will need to support this configuration. What is the approx. network overhead of a small (~500 bytes) transaction?
    2. Provided we come up with a smart enough conflict resolving mechanism, will this system survive? It is vital that committed transactions will never, ever, be lost.
    3. Can the 3 db architecture can be left in an inconsistent state? For example, can it be that a committed transaction in database A, is propagated to database B, and then A fails before it can be propagated to database C? leaving inconsistencies in working databases B & C (atleast until A is restored).
    4. How difficult would be to return such a system to normal state after one (or more) sites fails?
    Thanks,
    Idan

    <BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by Patricia McElroy ([email protected]):
    This requires a bit more detail - what indicates that replication is hung... is there anything in any of the database logs that indicates a problem. You indicate that even changes to the local database can not be made - is this true also for non-replicated tables? Also, Run "Select * from dba_repprop;" and confirm that the method for propagation is indeed ASYNCHRONOUS. <HR></BLOCKQUOTE>
    thanks patricia
    here is the details:
    1. i am having 2 DB servers at remote locations running oracle 8.1.6 on solaris 2.7
    2. When thre is a link fails between these two server, i am not able to put the job in a deffered que transactions though i have scheduled job and link as well.
    3. it's not allowing me to commit insert statement on local server,when the link is down.
    null

  • Multimaster Replication problem

    Hello,
    I've configured a multimaster replication environment with two master sites and a master group whith both of them and asynchronous replication. My problem is that in the master def the master group appeared stopped and I don´t know how activate it, and far over, the administrative requests in my replicated databases aren't executed by themselves, in the masterdef I can't depure them but I've to do it explicitily and in the other master site there is no way to get this requests dissapear.
    The main problem is that in the secondary master site the replication status is always quiesced whereas in the masterdef the status is normal if there is no objects in the master group and quiesced when I add some objects even though I generate the replication support for all the new objects.
    Any help would be very useful because I'm beginning with replication and I've no found any information in the 2 manuals of Oracle about this topic.
    Thanks in advance.
    Mabel

    you can find reason from dba_repcatlog view. I will suggest that you must recreate whole environment and then create your replication freshly. remeber that you replicated table must have primary key coulmn or you have configured suitable conflict resolution method for these tables. Moreover after generating replication support for the objects check dba_repcatlog view. this view should be empty and there is no error located in this view. if there is any error see message from this view and solve it and regenerate you replication support for the object and again check. when you complete all error then resume your replication activity.

  • Oracle Replication and SQL*Load direct Path

    We are setting up Oracle replication and have a few tables which are loaded using SQL*Loader Direct path. I have following questions:
    1. Can MultiMaster replication replicate direct patch sqlloaded data.
    2. If the answer to the above question is no, should we set up a new snapshot replication group . All other tables are in the Multi Master replication.
    3. Another question is on the number of replication groups. How many of these we should create. We have total of about 500 tables and database size is about 450 Gig. We plan to replicate all the tables and the refresh interval we want to be one minute for all the tables. Does having more/less replication groups help??
    Thanks for your help

    We are setting up Oracle replication and have a few tables which are loaded using SQL*Loader Direct path. I have following questions:
    1. Can MultiMaster replication replicate direct patch sqlloaded data.Yes, I don't think it should matter how the table is getting updated.
    2. If the answer to the above question is no, should we set up a new snapshot replication group . All other tables are in the Multi Master replication.see above
    3. Another question is on the number of replication groups. How many of these we should create. We have total of about 500 tables and database size is about 450 Gig. We plan to replicate all the tables and the refresh interval we want to be one minute for all the tables. Does having more/less replication groups help??
    Thanks for your help I believe what Oracle recommends is that you split up your tables into replication groups transactionally. I personally have 6 replication groups supporting 700+ tables. They are broken up more by business function than by number and size.

  • Synchronous multimaster replication Backup strategy using RMAN

    Hi all,
    I am using synchronous multimaster replication. my question is backup strategy has to perofirm in all the master site or only in any of 1 mastersite? what all problems will encounter in RMAn backup in my scenario please help me out with your suggestion
    nagaraj.K
    [email protected]

    You ask: "I want to configure backup strategy using RMAN. any one can help me that"
    And the answer is clearly no we can not.
    An RMAN backup strategy depends on your SLA (Service Level Agreement) with your customers that you didn't post. What is your down-time window? What is your skill set?
    You ask: "How to configure for RMAN Incremental backup?"
    Read the docs at http://tahiti.oracle.com for your version (which you didn't mention).
    You ask: "What will be backup space and there size ?"
    We have no idea. Are you going to create an image copy or a backup set? Read the docs and learn the difference. Are you going to turn on compression? Are you going to back up only changed blocks? We don't know.
    You ask: "how to manage growing online archiving files?"
    Again we can't help you without knowing your SLA. How many MG/GB are they? What period of time do you need to retain them to meet your SLA? When you figure this out back up to tape those you don't need to keep on the server.
    You ask: "how to manage growing data and there disk space?"
    This is one we can answer: BUY MORE DISK! That was easy.
    You ask: "How we can give good performance our CPU and memory?"
    Do you really expect that we can with zero knowledge of your environment, your version, your application, etc. distill into a few short paragraphs the collective wisdom of Cary Millsap, Jonathan Lewis, and the rest of the Oak Table Network membership?
    Of course we can not. So what you need to do is buy Cary's book, Jonathan's book, and take their classes.
    You ask: "we need keep all archive log in backup files or we need to remove old archive files?"
    Remove the old ones after being absolutely sure you have a good backup.
    You ask: "where we can take backup tape drive,SAN,disk removable hard disk? which one is better?"
    No one solution is better than the other. They are all adequate.

  • Multimaster replication error

    Hi,
    Well I am a newbie to multimaster replication. I tried to replication few tables and indexes of hr schema to other database but I am receiving the following errors:
    ID REQUEST ERRNUM MESSAGE
    43 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.EMPLOYEES does not exist or is inv
    121 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.DEPARTMENTS does not exist
    41 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.DEPARTMENTS does not exist or is i
    141 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.DEPARTMENTS does not exist
    161 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.EMPLOYEES does not exist or
    21 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    22 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    123 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.EMPLOYEES does not exist or
    24 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    25 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    26 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    ID REQUEST ERRNUM MESSAGE
    27 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    28 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    29 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    30 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    31 CREATE_MASTER_REPOBJECT -942 ORA-00942: table or view does not exist
    47 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.JOB_HISTORY does not exist or is i
    127 GENERATE_INTERNAL_PKG_SUPPORT -23308 ORA-23308: object HR.JOB_HISTORY does not exist
    Kindly, help me regarding this issue.
    Thank you for your cooperation.
    Kind Regards,
    Adnan Hamdus Salam

    You will see "replica busy" errors from time to time. The replication protocol is "one at a time" - if a consumer has more than 1 supplier, only 1 supplier may update the consumer at a time - the other suppliers get a busy signal during the update. Note that updates to 1 supplier may be sent to another supplier and then to the consumer if the first supplier gets a busy signal, so all of your updates should get through pretty quickly.
    The most important thing is - do your updates get through to all consumers? Do they get through quickly?

  • In a MultiMaster Replication to not propagate changes on Second DB

    Hello,
    I've setup a multimaster replication environment with DB1 and DB2.
    DB1 replicates all changes on some tables to DB2. But i don't want to DB2 to propagate changes to DB1. So, i didn't create a scheduled link on DB2 to propagate changes to DB1. But deferred transaction queue is getting too large on DB2. How can i settle the DB2 to not to put the changes to deferred transactions?
    Regards

    Replicating from DB1 to DB2 and allowing local updates on DB2 without propagating them back to DB1 is done with WRITABLE MATERIALIZED VIEWS, not MultiMaster Replication.
    Changes made at DB2 are "local" until they are overwritten by changes from DB1.
    See http://download.oracle.com/docs/cd/B19306_01/server.102/b14226/repoverview.htm#sthref57
    Hemant K Chitale
    http://hemantoracledba.blogspot.com

  • Is schema replicated in multimaster replication scenario?

    hellos
    I am asking basic question. I have set up a multimaster replication (ids5.1sp2) on database c=fi.. this works well.
    however, in the future I know that more objectClasses and attributes will be added to the schema.
    My simple question.. is do I have to amend the 99user.ldif files on BOTH ids5.1 servers or can I rely on the schema being replicated.
    thanks.

    Schema is supposed to replicate in all replication scenario's
    The documentation states
    "The best way to guarantee schema consistency is to make schema modifications on a single master server, even in the case of a multi-master replication environment.
    Schema replication happens automatically. If replication has been configured between a supplier and a consumer, schema replication will happen by default."
    However a few people in this forum have complained that this replication doesn't always work - so be sure to check to make sure the schema does in fact replicate.
    For more information on schema replication check out this link:
    http://docs.sun.com/source/816-5609-10/rep.htm#1063947
    It is at the bottom of the page ...

  • Diff between WAN replication and MAN replication

    Hi All,
    Kinldy tell me differnece between WAN replication and MAN replication in cluster in weblogic server.
    Thanks in advance.
    Balaji kumar

    MAN replication uses in-memory replication to keep the primary and secondary copies of the session
    on different clusters. It always attempts to locate the secondary session on the remote cluster.
    If connectivity between the data centers is lost, the local cluster will replicate the session within
    the cluster. On the first request for the session once inter data center connectivity is restored, WebLogic
    Server will relocate the session’s secondary to the remote cluster.
    WAN replication uses in-memory replication within the primary cluster and asynchronous
    replication via a database to keep a third copy of the session at the remote data center.
    The database-backed replication mechanism makes the session data available to the other data center's
    cluster should data centerlevel failover occur. The local server buffers its primary session updates in
    an in-memory buffer that is periodically flushed. The database-backed replication has two modes of
    operation:
    - Local cluster periodically flushed the in-memory buffer to its local database. Cross data center
    replication is handled externally using some sort of database level replication technology
    of your choosing.
    - Local cluster uses RMI to push updates periodically from the in-memory buffer to the
    remote cluster. The remote cluster writes these updates to its local database.

  • Questions on replication and h/w load balancer

              Why does h/w load balancer have to support passive cookies and inspect them to
              dispatch the request to the primary server first? If we have in-memory replication
              and if h/w loadbalancer just dispatches the http request from the client to any
              of the weblogic servers in the cluster wouldnt this work?
              Is it to pin the session to the creator server to minimize the chance of replication
              misses due to n/w issues, member server slow speed, buffer overwrite etc.
              -Shiraz
              

    Yes, and previous to 6.1 (?) if the request showed up at the wrong server it
              would fail.
              Peace,
              Cameron Purdy
              Tangosol Inc.
              Tangosol Coherence: Clustered Coherent Cache for J2EE
              Information at http://www.tangosol.com/
              "Shiraz Zaidi" <[email protected]> wrote in message
              news:3c15aa10$[email protected]..
              >
              > Why does h/w load balancer have to support passive cookies and inspect
              them to
              > dispatch the request to the primary server first? If we have in-memory
              replication
              > and if h/w loadbalancer just dispatches the http request from the client
              to any
              > of the weblogic servers in the cluster wouldnt this work?
              >
              > Is it to pin the session to the creator server to minimize the chance of
              replication
              > misses due to n/w issues, member server slow speed, buffer overwrite etc.
              >
              > -Shiraz
              

  • Windows 2012 - SYSVOL replication and NETLOGON share

    After reading 100 tons of articles and links i decided to open this thread.
    I know today is 1st of april, but unfortunately for me this is not a joke.
    given:
    two 2003 DC's - physical servers
    two 2008 DC's - VM's on ESX 5.1 hosts
    two 2012 DC's - VM's on ESX 5.5 hosts
    domian fucntional level 2003
    situation:
    we plan to decom the 2003's.
    The 2008 DC's are in place since a while and working ok.
    We plan to upgrade to 2012 and here it is where the trouble starts.
    Firstly, I couldn't, by any means, to promote 2012 as DC's until i moved all the FSMO roles from the 2003 DC's to the 2008 DC's.
    After lots of work with the network team we made all the right connections opened the firewalls, made the DCDIAG and DNS tests and the only problem reported are the SYSVOL replication and NETLOGON share.
    I tried all the tools out there to check the replication and the last one is Microsoft's AdRplstatus Tool which made me think that either Microsoft makes fun of me, either i'm the dumbest windows admin on this planet.
    This tool reports that there are NO ERRORS in replicating SYSVOL, but when i run the command 'net share' the 'domain.com\sysvol\scripts' is not there. Further more checking, i try to access '\\domain.com\sysvol' - directory under which i must find the 'policies'
    and 'scripts' folders and, Sysvol is empty - obviously these are present when i do this check from the 2008 DC's or 2003 DC's.
    Is there a known issue for these problems regarding 2012 and ESX 5.5 ? - still, i doubt it.
    DCDIAG /TEST:DNS
    Directory Server Diagnosis
    Performing initial setup:
       Trying to find home server...
       Home Server = dc-p01
       * Identified AD Forest.
       Done gathering initial info.
    Doing initial required tests
       Testing server: dc-p01
          Starting test: Connectivity
             ......................... dc-p01 passed test Connectivity
    Doing primary tests
       Testing server: dc-p01
          Starting test: DNS
             DNS Tests are running and not hung. Please wait a few minutes...
             ......................... dc-p01 passed test DNS
       Running partition tests on : ForestDnsZones
       Running partition tests on : DomainDnsZones
       Running partition tests on : Schema
       Running partition tests on : Configuration
       Running partition tests on : domain
       Running enterprise tests on : domain.com
          Starting test: DNS
             Test results for domain controllers:
                DC: dc-p01.domain.com
                Domain: domain.com
                   TEST: Dynamic update (Dyn)
                      Warning: Failed to delete the test record dcdiag-test-record i
    n zone domain.com
             Summary of test results for DNS servers used by the above domain
             controllers:
                DNS server: 184.134.0.97 (<name unavailable>)
                   1 test failure on this DNS server
                   PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
    S server 184.134.0.97
                   dc-p01                       PASS
    PASS PASS PASS WARN PASS n/a
             ......................... domain.com passed test DNS
    The PTR record query for 1.0.0.127 is still there but i will change it manually, my DNS is set as primary to point to the server itself by it's IP and not 127.0.0.1.
    still, that DNS server with that error is a linux DNS, but all my DC's have DNS role on and fully replicating and working, including the 2012's.
    DCDIAG:
    Directory Server Diagnosis
    Performing initial setup:
       Trying to find home server...
       Home Server = dc-p01
       * Identified AD Forest.
       Done gathering initial info.
    Doing initial required tests
       Testing server: dc-p01
          Starting test: Connectivity
             ......................... dc-p01 passed test Connectivity
    Doing primary tests
       Testing server: dc-p01
          Starting test: Advertising
             ......................... dc-p01 passed test Advertising
          Starting test: FrsEvent
             There are warning or error events within the last 24 hours after the
             SYSVOL has been shared.  Failing SYSVOL replication problems may cause
             Group Policy problems.
             ......................... dc-p01 passed test FrsEvent
          Starting test: DFSREvent
             ......................... dc-p01 passed test DFSREvent
          Starting test: SysVolCheck
             ......................... dc-p01 passed test SysVolCheck
          Starting test: KccEvent
             ......................... dc-p01 passed test KccEvent
          Starting test: KnowsOfRoleHolders
             ......................... dc-p01 passed test KnowsOfRoleHolders
          Starting test: MachineAccount
             ......................... dc-p01 passed test MachineAccount
          Starting test: NCSecDesc
             ......................... dc-p01 passed test NCSecDesc
          Starting test: NetLogons
             Unable to connect to the NETLOGON share! (\\dc-p01\netlogon)
             [dc-p01] An net use or LsaPolicy operation failed with error 67,
             The network name cannot be found..
             ......................... dc-p01 failed test NetLogons
          Starting test: ObjectsReplicated
             ......................... dc-p01 passed test ObjectsReplicated
          Starting test: Replications
             REPLICATION-RECEIVED LATENCY WARNING
             dc-p01:  Current time is 2014-04-01 10:25:09.
                DC=ForestDnsZones,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40
                DC=DomainDnsZones,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40
                CN=Schema,CN=Configuration,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40
                CN=Configuration,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:25:50
                DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40
             ......................... dc-p01 passed test Replications
          Starting test: RidManager
             ......................... dc-p01 passed test RidManager
          Starting test: Services
             ......................... dc-p01 passed test Services
          Starting test: SystemLog
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   09:26:35
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:27:52
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      fdc (C:\Windows\s
    ystem32\taskhost.exe).
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   09:31:14
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   09:32:13
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:32:53
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      c18 (C:\Windows\s
    ystem32\taskhost.exe).
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   09:35:33
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:37:54
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      950 (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:42:54
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      5c4 (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:47:55
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      ee0 (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:52:56
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      e48 (C:\Windows\s
    ystem32\taskhost.exe).
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   09:53:30
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   09:57:57
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      a20 (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   10:02:58
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      1bc (C:\Windows\s
    ystem32\taskhost.exe).
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   10:06:04
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   10:07:58
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      14c (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   10:12:59
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      90c (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   10:18:00
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      558 (C:\Windows\s
    ystem32\taskhost.exe).
             An error event occurred.  EventID: 0x0000272C
                Time Generated: 04/01/2014   10:23:01
                Event String:
                DCOM was unable to communicate with the computer ca-p01.domain.com
    n using any of the configured protocols; requested by PID      f00 (C:\Windows\s
    ystem32\taskhost.exe).
             A warning event occurred.  EventID: 0xA004001B
                Time Generated: 04/01/2014   10:23:56
                EvtFormatMessage failed, error 15027 the message resource is present
     but the message is not found in the string/message table.
                (Event String (event log = System) could not be retrieved, error
                0x3ab3)
             ......................... dc-p01 failed test SystemLog
          Starting test: VerifyReferences
             ......................... dc-p01 passed test VerifyReferences
       Running partition tests on : ForestDnsZones
          Starting test: CheckSDRefDom
             ......................... ForestDnsZones passed test CheckSDRefDom
          Starting test: CrossRefValidation
             ......................... ForestDnsZones passed test
             CrossRefValidation
       Running partition tests on : DomainDnsZones
          Starting test: CheckSDRefDom
             ......................... DomainDnsZones passed test CheckSDRefDom
          Starting test: CrossRefValidation
             ......................... DomainDnsZones passed test
             CrossRefValidation
       Running partition tests on : Schema
          Starting test: CheckSDRefDom
             ......................... Schema passed test CheckSDRefDom
          Starting test: CrossRefValidation
             ......................... Schema passed test CrossRefValidation
       Running partition tests on : Configuration
          Starting test: CheckSDRefDom
             ......................... Configuration passed test CheckSDRefDom
          Starting test: CrossRefValidation
             ......................... Configuration passed test CrossRefValidation
       Running partition tests on : mydomain
          Starting test: CheckSDRefDom
             ......................... mydomain passed test CheckSDRefDom
          Starting test: CrossRefValidation
             ......................... mydomain passed test CrossRefValidation
       Running enterprise tests on : domain.comn
          Starting test: LocatorCheck
             ......................... domain.comn passed test LocatorCheck
          Starting test: Intersite
             ......................... domain.comn passed test Intersite
    in Active DIrecotry Sites adn Services when i try to replicate FROM a valid SYSVOL Domain Controller towards my 2012 DC i get this:
    The following error ocurred during the attempt to contact the domain controller dc-p01:
    Directory object not found
    i cannot upload picture yet because Ms ...didn t verified me.

          Starting test: NetLogons
             Unable to connect to the NETLOGON share! (\\dc-p01\netlogon)
             [dc-p01] An net use or LsaPolicy operation failed with error 67,
             The network name cannot be found..
             ......................... dc-p01 failed test NetLogons
          Starting test: ObjectsReplicated
             ......................... dc-p01 passed test ObjectsReplicated
          Starting test: Replications
             REPLICATION-RECEIVED LATENCY WARNING
             dc-p01:  Current time is 2014-04-01 10:25:09.
                DC=ForestDnsZones,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40
                DC=DomainDnsZones,DC=mydomain,DC=lan
                   Last replication received from DC-P02 at
              2014-03-31 15:22:40           
    To perform non-authoritative restore of sysvol, you set the Burflag value & system will automatically tries to sync contents of sysvol with its replicating partner DC. Its not mandatory to select any particular DC for sysvol replication becasue in a
    same domain, all DC's shares the same sysvol content.
    Sometime, if initialization of FRS doesn't start, you have to follow the below article. Its also applicable to windows 2008 even as long as your using FRS for replication.
    http://support.microsoft.com/kb/290762/en-us
    To force the replication of sysvol using cmdline, refer below link.
    http://blogs.technet.com/b/justinturner/archive/2007/04/27/quick-tip-force-frs-replication.aspx
    Its better to find out what went wrong with the overall AD domain infra that sysvol has not been able to contact its partner for sysvol replication using depth assessment of the domain. It can be the network,firewall,antivirus or in-built firewall port issues
    which might have broken sysvol replication.
    http://msmvps.com/blogs/ad/archive/2008/06/03/active-directory-health-checks-for-domain-controllers.aspx
    Awinish Vishwakarma - MVP
    My Blog: awinish.wordpress.com
    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.

  • Data replication and synchronization in Oracle 10g XE.

    We are trying to do data replication and synchronization sort of thing for all our servers. We are using Oracle 10g. XE. I guess there are some features in oracle already for replication but I am not very sure about them.
    To explain it more clearly - we will have individual database servers in our sub-divisions and then divisions and centers and then main server. We need to synchronize at various levels. So If any body is aware of any techniques, please let me know.

    Hi,
    Could you tell me what exactly synchronisation your talking about..?
    we will have individual database servers in our sub-divisions and then divisions >>and centers and then main serverIf you have mulitple DB servers then you can connect it by DB links. also if you are talking DB synchronisation then you can have Triggers,Materialized views.
    we also have two independent severs which are synchronised(atleast schema levels).
    Regards!

Maybe you are looking for