Dialup connection with Advance Replication

My Multimaster replication 9i is working fine on LAN with hostname setting with dblink method.
I want to connect office and home databases for replication with dialup connect with local isp. DSL connection is available in office.
1) How will I connect with dialup from home; i.e. should I make a dblink with IP setup instead of hostname at home; and provide the dynamic IP address of home server in office server?
2) Do I need static IP for home as well?
3) If we setup our server with dynamic IP then what changes will we make on every connection; I mean should I make a dblink for every dynamic IP? Or should I open tnsnames file every time when we connect through dialup?
Is there any other setting required for connection between two servers? Please guide me in detail.

Assuming that the dialup link even provides enough bandwidth to handle the volume of changes you're making, and that we're dealing with asynchronous, rather than synchronous, operation...
You would almost certainly need to have a static IP address on both sides. I'd be a little suprised if a dialup ISP offered static IP addresses, but I suppose it's possible. Barring a static IP address, you might be able to use some sort of dynamic DNS service, but that would just be adding another level of fragility to an already very fragile system.
You would need to be able to make a direct connection from your database at home to the database at work. Assuming that you follow basic security guidelines, though, the work database should be behind a firewall and inaccessible to the public internet. That would mean that you would want to create a VPN tunnel from your home machine to your work machine. That encryption, though, will tend to decrease the bandwidth you have for replication. If you don't use VPN software, you'd probably have to open holes through the firewalls at work and at home to allow database traffic, which would be somewhat insecure.
What is the purpose of this exercise, though? It seems unlikely to be particularly stable, however it is configured. If you can describe the goal, we may be able to suggest more stable alternatives.
Justin

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Hi Techies,
I had a long term doubt on this. When the same functionality can be done using triggers and jobs, why should such advanced replication exist to use all those 5-10 packages and all those mess. What other thing in replication does differentiate it from its rival, manual work ie using triggers and jobs.
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Why use Oracle Replication? Where to start?
(1) Re-inventing the wheel is never a good idea. especially when there's a high risk of inventing it square-shaped.
(2) Oracle will support their replication implementation: they won't support yours.
(3) QUERY_REWRITE_ENABLED
(4) efficiency: Oracle's inbuilt kernel code is simply faster than anything we can write
(5) Do you really mean Advanced Replication and not just materialized views?
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There are so many gotchas in just setting up the replication architecture using Oracle's box of bits that only a mad man would want to add building their own set of low level components into the mix. Now, you may have a very simple replication requirement that could be satisfied with a few triggers and a DBMS_JOB. Are you sure that requirement is fuilly scoped? Furthermore, are you sure that your requirement won't get more complex in the future? And do you really think it will take you less time to knock up some triggers and related database objects that it will do to issue a CREATE MATERIALIZED VIEW statement (and maybe a CREATE MATERIALIZED VIEW LOG too)?
Oh, and spare a thought for the poor saps that will have to maintain th eapp after you've gone. They'll probably be happier with a standard Oracle implemenation that is well-known well-documented and for which there are training courses.
Life is too short.
Cheers, APC

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Edited by: berx on Oct 12, 2012 11:32 AM - fixed typos

Hi Martin,
1/oci/thick
2/RAC options
3/TNS connection
1/oci/thick
OCI driver has a slightly different set of features than thin:
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jdbc:oracle:oci:@(DESCRIPTION=(enable=broken)(ADDRESS=(PROTOCOL=tcp)(HOST=your_host_name)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=your_service_name)))
2/RAC options
More speculatively:
-Try sid instead of service name (will disable some networking features on that connection), try switching load balancing off.
From: Unable to access RAC from SQL Developer!
In general and especially for RAC database you should use SERVICE_NAME to connect and not SID (because only SERVICE_NAME can use load balancing and failover features):
3/TNS connection
with connection via Connection Type set to TNS and a proper alias - it works fine(Which Connection Type TNS did you use? TNS Connect Identifier = oci/thick, TNS Network alias (can be thin (I should check, might depend on oci/thick checkbox))
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7
Y?'
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Can reply on [email protected]

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Dialup connection with Advance Replication

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