RE: Question for Dataguard users
- From: "Amaral, Rui" <Rui.Amaral@xxxxxxxxxxxxxxxx>
- To: "'RStorey@xxxxxxxxxxxxxxxxxx'" <RStorey@xxxxxxxxxxxxxxxxxx>, oracle-l-freelists <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 27 Jul 2011 14:10:53 -0400
One setup that worked for me when I played with it (we decided to eventually go
with a network based switch method for other reasons [like jdbc can't parse
those sorts of connections strings]) was something like this:
db_connect=
(DESCRIPTION=
(ADDRESS_LIST=
(LOAD_BALANCE=off)
(ADDRESS=(PROTOCOL=tcp)(HOST=server1)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=server2)(PORT=1521)))
(CONNECT_DATA=
(SERVICE_NAME=db_service_name)
(FAILOVER_MODE=
(TYPE=select)
(METHOD=basic)
(RETRIES=20)
(DELAY=15))))
With load_balance=off the connect attempts to access he db via the first entry
and makes 20 attempts with a 15 second delay between attempts then tries the
next entry in sequential order. Worked fine with the standard oci client but
your mileage may vary on your environment.
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Storey, Robert (DCSO)
Sent: Wednesday, July 27, 2011 1:43 PM
To: oracle-l-freelists
Subject: Question for Dataguard users
Okay, have a question for the dataguard users. Probably more for the non-RAC
folks than anything.
My setup is a primary and a single physical standby.
In the event of a switchover, all user connections are broken and the switch
occurs. Then users have to reconnect.
But, I'm looking for the best way to structure the TNSNAMES file. I'm probably
over thinking this, but, there has to be a way to create both entries for both
servers in the file, but only have them use the production one. Something
tickles my brain from way back that it will run the TNS list in order looking
for a connection.
Just curious how others have set up their files.
Thanks
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