How to make multiple sources of DB option?

My import RPD same table of many Oracle DBs and unions, which allows me to create a summary report.  The problem is when a DB is out of service for maintenance, the report fails because a DB is inaccessible.  How can I do all of the optional DBs, so the report will continue to operate as long as some of them are available?

Hello

Honestly I don't remember I have a way to make an optional physical source: when a LTS are pointing to it and your LTS is used to provide data for analysis (as you did) it must be there or you have the error (your current situation).

The RPD, you can manually disable an LTS, but I'm not aware of a way to do it dynamically or make the option you are looking for...

Maybe he can be a solution for DB maintenance is supposed to be annexed and communicated as soon as possible, in order to modify the RPD to disable give a LTS when maintenance start and enable it when above. (I can also imagine "exotic" solutions to dynamically update the RPD on the fly by the script, but what do you really want?)

Another option through my head (didn't try, just a theory): set up a rule of fragmentation and try to use it to avoid hitting a given LTS when you it is down, but it will probably be very difficult to manage and control with a huge risk of missing an LTS, even if the DB is in place.

Just a point about the business logic: you said you use the union of several table to create a summary report. So when a DB is down for maintenance your report is not a view consolidated, it is a partial consolidated view. In this case, I personally prefer to have an error rather than see the numbers that are false, as some sources are missing (but nothing on the screen tell you that...)

Tags: Business Intelligence

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