11gR2 dataguard using a primary 2 node RAC and a single standby

Question

Hi,
I need to implement dataguard between 11gR2 RAC db to a single standby. How do I proceed?
Secondly, I need to timely apply the archive log i.e I need the dataguard to be in SYNC mode only in the night and the standby in read only
mode rest of the times. Can I achieve this using dataguard broker? If yes, can you please provide me the steps?
regards,
Ram

Answer 1

Doing that would require jobs again.
In your example:
9 am:
alter database recover managed standby database cancel;
-- here you can actually specify anything greater 780 because of the cancel at 10 pm; this is just to make sure the archive logs are being shipped.
alter database recover managed standby database delay=780 disconnect from session;
-- and, if your requriement is still to have the standby open read only
alter database open read only;
10 pm:
shutdown immediate;
startup nomount;
alter database mount standby database;
alter database recover managed standby database cancel;
alter database recover managed standby database using current logfile disconnect from session;
with that setup:
- your standby stops recovering at 9am
- the archive logs of the primary will still be shipped to your standby side for any emergency
- you'll have an open read only standby from 9am to 10pm
- the archive logs will be real time applied from 10pm to 9am
Note that this is just theory at the moment, I don't have a test set up like this. But it should give you an idea of what's possible and in what way you can accomplish your needs.