Multi master replication between 5.2 and 6.3.1

I have a setup in which I have a master running version 5.2 and about 15 consumers ( slaves) all of which have been upgraded to 6.3.1 . I now want to create a multi master topology by promoting one of these consumers to be a master and still keep the 5.2 in use as we have a bunch of other applications that depend on the 5.2 instance. Our master has two suffixes. The master server is also the CA cert authority for all the consumers . After reading the docs I narrowed down the procedure to be
1. Promote one of the 6.3.1 consumers to hub and then to master using the dsconf promote-repl commands. The problem here is that I am not sure how I can create a single consumer that can slave both the suffixes. We currently have them being slaved to different consumers.
Also do I need to stop the existing replication between the 5.2 master and the would be 6.3.1 master to promote to hub and master.
2. Set the replication manager manually or using dsconf set-server-prop on the new 6.3.1 master .
3. Create a new replication agreement from 5.2 to 6.3.1 master without initializing. (using java console)
4. Create new replication agreement from 6.3.1 to 5.2 (using command line)
5. Create new repl agreements between the new 6.3.1 master and all the other consumers. For this do I need to first disable all the agreements between 5.2 and 6.3 or can I create new agreements without disabling the old ones?
6. Initialize 6.3.1 from the 5.2 master.
My biggest concern at this point is surrounding the ssl certs and the existing trusts the consumers have with the 5.2 master. Currently my 5.2 server acts as the CA authority for our certificate management with the ldap slaves. How can I migrate this functionality to the new server and also will this affect how the slaves communicate to the new master server ?
Thanks in advance.

Thanks Marco and Chris for the replies.
I was able to get around the message by first manually initialzing the new slave using an ldif of the ou from the master , using dscc to change the default replication manager account to connect and finally editing the dse.ldif to enter the correct crypt hash for the new repl manager password. After these steps I was able to successfully set up replication to the second ou and also promote it to hub and master ( I had to repeat the steps after promotion of the slave to master as somehow it reset replication manager settings when I did that).
So right now, I have a 5.2 master with two ou's replicating to about 15 consumers.
I promoted one of these to be a second master (from consumer to hub to master). Replication is setup from 5.2 to 6.3 master but not the other way round.
I am a little bit nervous setting up replication the other way round as this is our production environment and do want to end up blowing up my production instance. The steps I plan on taking are , from the new master server
1. dsconf create-repl-agmt -p 389 dc=xxxxx,dc=com <5.2-master>:389
2. dsconf set-repl-agmt-prop -p 389 dc=xxxxx,dc=com <5.2-master>:389 auth-pwd-file:<passwd_file.txt>
I am assuming I can do all of this while the instances are up. Also in the above, does create-repl-agmt just create the agreement or does it also initalize the consumer with the data ? I want to ensure I do not initialize my 5.2 master with my 6.3 data.
Thanks again

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I recently set up multi-master replication between two machines, A and B, running iDS 5.1. Everything works well until I disable replication and re-enable replication. Here's the procedure that I follow:
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Wich database version are you using?

Database replication between Oracle RAC and Oracle Standalone DB

Hi,
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The partial data that we are looking for replication are of size 25GB. Some of questions we have:
1. Is there any other replication mechanism apart from Materilzed view for this solution?
2. Is it feasible to sychronize around 25GB data between servers?
3. What can be estimated time for refresh or Synchronization?
Thanks in advance for help.

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Database replication between Oracle RAC and Oracle Standalone DB in 9i

Hi,
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We will have Oracle 9i database server for both RAC and Standalone machine.
The partial data that we are looking for replication are of size 25GB. Some of questions we have:
1. Is there any other replication mechanism apart from Materilzed view for this solution?
2. Is it feasible to sychronize around 25GB data between servers?
3. What can be estimated time for refresh or Synchronization?
The methods that we are evaluating currently for this replication are:
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2. Oracle 9i Datagaurd.
Please let me know if we need to look for some other methods of replication also.
Thanks in advance for help.

ManojMac wrote:
The partial data that we are looking for replication are of size 25GB. Some of questions we have:
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2. Is it feasible to sychronize around 25GB data between servers?Sure. Depending on the rate of change, your latency requirements, whether the standalone database has the horsepower to apply all the changes generated by to other three nodes, etc.
3. What can be estimated time for refresh or Synchronization?Depends on the architecture, the network connection, whether you are doing incremental refreshes, etc. And it depends on what time you're measuring-- you might be measuring the latency between the RAC cluster and the standalone database, you might be measuring the time it takes to incrementally refresh a single materailized view when there have been no changes, you might be measuring the time it takes to do a complete refresh of an entire refresh group, pulling 25 GB of data over the network.
The methods that we are evaluating currently for this replication are:
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Replication between 130 nodes and 1 Data Center

Hi everyone.
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On the orher hand i have to replicate some data from datacenter to nodes, business rule, for example: new company names, new persons, new prohibitions, etc.
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Please somebody could suggest me the best solution.
Thanks in advanced.

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Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Multi-master replication questions for iPlanet 5.0, gurus out there?

hi:
I'm using iPlanet Dir Server 5.0 and I note that many gurus out there has
been able
to get this to work, that's good, but I have yet to. I have several
questions, maybe
someone can spend a few minutes and save me hours...
I have a suffix called dc=calient,dc=net. I followed the suggestions in
the
iPlanet install guide and created 2 directory servers
a) suffix o=NetscapeRoot, at some arbitrary port, 4601
b) suffix dc=calient,dc=net, at the usual port 389.
All my searches/create/delete work fine. However, when I try to replicate
with multi-master between 2 machines, I keep getting into problems.
Here's one set of questions...
Q1: do people out there really split their tree from the o=NetscapeRoot
tree?
Q2: The admin guide says the the unit of replication is a database, and
that each replication can only have 1 suffix. Is this true? Can
a replicated db have more than 1 suffix?
Q3: If I also want to replicate the o=NetscapeRoot tree, I have to set
up yet 2 more replication agreements. Isn't this more work? If
I just lump the 2 suffixes together, wouldn't it be easier? But would
it work?
Q4: I followed the instructions to enable replicas on the masters.
But then I tried to create this cn=Replication Manager, cn=config
object.
But what is the object class of this entry? An iPlanet user has uid
as its RDN... I tried a person object class, and I added a password.
But then I keep getting error code 32, object not found in the error
log. What gives? such as
WARNING: 'get_entry' can't find entry 'cn=replication
manager,cn=config', err 32
Q5: Also, are there any access control issues with this cn=Replication
Manager,
cn=config object? By this I mean, I cannot seem to see this object
using
ldapsearch, I can only see cn=SNMP, cn=config. Also, do I have
to give all access via aci to my suffix dc=calient,dc=net? Also,
given the fact that my o=NetscapeRoot tree is at a different port (say
4601),
not 389, could this be an issue?
Q6: when replication fails, should the Dir Server still come up? Mine does
not anymore
which is strange. I keep getting things like this in my log file
[08/Nov/2001:21:49:13 -0800] NSMMReplicationPlugin - Could not send consumer
mufasa.chromisys.com:389 the bind request
[08/Nov/2001:21:49:13 -0800] NSMMReplicationPlugin - Failed to connect to
replication consumer mufasa.chromisys.com:389
But why shouldn't the dir server itself come up even if replication
fails?
steve

Hi Steve,
First, please read the 'Deployment Guide'. I think that is easier to
understand when you want to setup multi-master replication. The
'Administrator's Guide' gives you step-by-step instructions, but it may
not help you to understand how to design your directory services.
Stephen Tsun wrote:
I have a suffix called dc=calient,dc=net. I followed the suggestions in
the
iPlanet install guide and created 2 directory servers
a) suffix o=NetscapeRoot, at some arbitrary port, 4601
b) suffix dc=calient,dc=net, at the usual port 389.
All my searches/create/delete work fine. However, when I try to replicate
with multi-master between 2 machines, I keep getting into problems.I don't understand something: which backend do you want to replicate?
The one holding 'o=NetscapeRoot' or the one holding 'dc=calient,dc=net'?
Do you want to setup replication between these two instances of the
directory server (i.e. between port 4601 and 389 in your example)?
Q1: do people out there really split their tree from the o=NetscapeRoot
tree?If you have multiple directory servers installed in your environment, it
is probably worth dedicating (at least) one directory server for the
o=netscaperoot tree.
Q2: The admin guide says the the unit of replication is a database, and
that each replication can only have 1 suffix. Is this true? Can
a replicated db have more than 1 suffix?Well, it is normal, since in iDS 5.x you have 1 suffix per database.
You can, however, replicate multiple databases.
Q3: If I also want to replicate the o=NetscapeRoot tree, I have to set
up yet 2 more replication agreements. Isn't this more work? If
I just lump the 2 suffixes together, wouldn't it be easier? But would
it work?You can't lump the 2 suffixes together, because each backend has 1
suffix associated with.
Q4: I followed the instructions to enable replicas on the masters.
But then I tried to create this cn=Replication Manager, cn=config
object.
But what is the object class of this entry?Usually, it is organizationalperson or inetorgperson. In most of the
cases you want an objectclass which can have userPassword attribute.
An iPlanet user has uid
as its RDN... I tried a person object class, and I added a password.
But then I keep getting error code 32, object not found in the error
log. What gives? such asYou must have misconfigured something. Or perhaps, it is not
cn=replication manager, cn=config, but 'uid=replication manager,cn=config'
Q5: Also, are there any access control issues with this cn=Replication
Manager,
cn=config object? By this I mean, I cannot seem to see this object
using
ldapsearch, I can only see cn=SNMP, cn=config.The configuration tree is protected by ACIs, so you can not see them
using anonymous BINDs. Try binding as 'directory manager' and you will
find your entry.
Also, do I have
to give all access via aci to my suffix dc=calient,dc=net?For what purpose? For replication, it is enough to set user DN in the
replication agreement and this user can update the replicated backend.
Q6: when replication fails, should the Dir Server still come up?Yes.
Bertold

Basic Multi Master Replication doesn't work!

Hi all,
 
I am studying Oracle replication and I tried to apply multi master replication MMR between two databases: WinXp12 (master definition) and WinXp11. 
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BEGIN
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DBMS_DEFER_SYS.SCHEDULE_PURGE(
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-- ADD JOBS TO WinXP12
CONNECT REPADMIN/REPADMIN@WINXP12
BEGIN
DBMS_DEFER_SYS.SCHEDULE_PUSH(
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BEGIN
DBMS_DEFER_SYS.SCHEDULE_PURGE(
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DELAY_SECONDS => 0,
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SELECT * FROM DBA_REPCATLOG ;
-- NO ERROR
BEGIN
DBMS_REPCAT.RESUME_MASTER_ACTIVITY(
GNAME => '"MGROUP1"');
END;
BEGIN
DBMS_REPCAT.SUSPEND_MASTER_ACTIVITY(
GNAME => '"MGROUP1"');
END;
BEGIN
DBMS_REPCAT.ADD_MASTER_DATABASE(
GNAME => '"MGROUP1"',
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BEGIN
DBMS_REPCAT.RESUME_MASTER_ACTIVITY(
GNAME => '"MGROUP1"');
END;
-- here I could see in WinXP11 the tables created in SCOTT schema with data
-- in WinXP12 I successfully issued the command
insert into dept values ( 44,'text',null);
-- I don't see the data in WinXP11
-- No rows in deferror
-- dba_jobs shows that there is not broken job

Hi!
You will need to create a public db link and a private db link connecting to the public link.
CONN / AS SYSDBA
CREATE PUBLIC DATABASE LINK WINXP11 USING 'WINXP11';
CONN REPADMIN/REPADMIN
CREATE DATABASE LINK WINXP11 CONNECT TO REPADMIN IDENTIFIED BY REPADMIN;
SELECT SYSDATE FROM DUAL@WINXP11;
Regards,
PP

Multi master replication

Hi
I have implemented multi master replication only for dmls between 8i and 10g database
whenever i try to generate the replication support after putting the object in replication group i get the error as
ora-23416 primary key constraint doesnot exisrt
I would like to know that whether is it necessary that the every table should have primary key constraint mandatorily before generating the replication support ?
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Aram

Hi , Please refer to metalink doc "ORA-23346 DURING GENERATE_REPLICATION_SUPPORT [ID 1059092.6]"
https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=PROBLEM&id=1059092.6
Hope this helps
Thanks

Problem in multi master replication creation using DBA Studio -- replication

Hi,
I am trying to create multi master replication using DBA studio but facing following problem at the time of master group creation.
ORA-04052 error occured when looking up remote object SYS.SYS@CBOLDATA
ORA-00604 error occured at recursive SQL level 2
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Here I have used two database named UPP817 & CBOLDATA
Step of master site creation is followed like this.
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Create public database link at master site database for CBOLDATA.
Also see that you are using SNMP protocol and Oracle Pipe at both
databases. This will be usefull while making replication from remote
place.
I hope this will work.
regards
Avinash Jadhav

Procedure to create Multi Master Replication

Hi,
can anybody help on this. How to do Multi Master replication from scarch . I used to do single master . this is the first time iam trying to do Multi-Master Replication . I am looking for doc, iam unable to find . Is ther anybody can tell how to do Multi-Master little in detail. I installed my Software and i loaded my company schema and the data on one server. I have another server ready to install software and load data.

with regards to the post "RTFM"..
in my experience the sunone/iplanet manuals are very badly written and in some cases just plain wrong..
sure start with reading the manuals, then make sure you also read the release notes and then you can still be confused in some cases....
the section on mmr in the manual has a number of mistakes last time i looked..
one reason why i think community sites, and generally available "support" are such prime requisites in choosing software...
just my 2 cents

Multi master replication between 5.2 and 6.3.1

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