[Info-vax] RDB Replication ...

[Richard Maher]

On 14/06/2022 10:30 pm, El SysMan wrote:
> Hi All!
> 
>   Looking for any information and technical articles related to replication of databases.
> Any pointers?
> May be in DEC Tech Journals ?
> 
> Thanks in advance!

No technical articles know of but if you're looking for a solution to a 
real problem rather than a god read can I ask why you're replicating.

To quote an old Rdb Engineer "The best way to replicate is not at all"

But to answer your question (Jan Eric would be more up to date than me) 
you could search for: -

1) VAX/DEC Data Distributor

This had full scheduled Table replication, Extraction and Extraction 
Rollup (multiple source Tables) functionality

2) Use your own triggers to journal changes to the source Table.

Had a friend who did this to create an "adapter" For Tibco rendezvous ESB.

But Again why replicate?

With Rdb, sadly, DB Integrator is no longer supported but both Oracle 
and SQL Server let you join across databases. You don't have to worry 
about how old your copy of the data is as there is a single source of 
truth. No telling users "Yeah wait 5mins till LDAP is dristributed 'cos 
we don't know which server your logon will go to" :-(