RE: how to build cascaded logical standby from a logical standby
Date: Thu, 24 Apr 2008 12:25:49 +0100
This relates to a question I was asking a couple of weeks ago about Streams from a standby database.
I was under the impression that you could not run a standby (or Streams) from another standby database. I do not know this for certain and logically it seems to be a sound idea but I have not seen anything that suggests it can be done.
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Eagle Fan Sent: 24 April 2008 12:00
Subject: Re: how to build cascaded logical standby from a logical standby
The oracle database version is 10.2.0.3.
On Thu, Apr 24, 2008 at 6:58 PM, Eagle Fan <eagle.f_at_gmail.com> wrote:
I'm trying to build a cascaded logical standby using logical standby as intermedial server.
The redo route is like this:
Primary (server A) -> logical standby (server B) -> cascaded logical standby (server C).
Server B was copied from Server A and has already been activated as logical standby. It's working very well.
Then I copied server C from server B and tried to setup a cascaded logical standby.
But when I started logical standby apply on Server C, it was looking for archive logs from server A, not Server B.
I was trying to register archive logs from Server B, but got the following error:
SQL> alter database register logfile
alter database register logfile
ERROR at line 1:
ORA-01324: cannot add file due to DB_ID mismatch
In DBA_LOGSTDBY_LOG, the archive log is from primary (Server A).
I didn't find detailed action plan of building cascaded logical standby, if you have such kind of doc, please give me a copy:)
Any comments or suggestions are appreciated.
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