Re: DG questions

  • From: Bob <orcl@xxxxxxxxxxx>
  • To: alever@xxxxxxxxx
  • Date: Sun, 05 Nov 2006 08:27:18 -0500



Alessandro Vercelli wrote:

Hi everybody,
I've configured a couple of primary/standby (physical) databases on two 
separated hosts, 10.1.0.5, RHEL ES3.

I've read DG Concepts and Administration manual, but I'm a little confused about some parameters:
Q1. DB_UNIQUE_NAME: is it mandatory to have them different when DG is on 
separated hosts?

Absolutely- they must be , db_unique_name is the way the 2 (more if you have additional standbys) instances communicate with *each other*

Q2. INSTANCE_NAME: the same as Q1 + can be omitted?

Absolutely - you dont need it at all. this is just another parameter that gets in the way. Forget about instance_name

bob

Thanks for your help,

Alessandro




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