Niall,
documentation says <https://docs.oracle.com/database/121/NETAG/advcfg.htm#sthref817> that it's *ON
*by default
/Connect-time failover is turned //|on|//by default for multiple address
lists (ADDRESS_LIST),
connect descriptors (DESCRIPTION), and multiple connect descriptors
(DESCRIPTION_LIST)./
Best Regards,
Oleksandr Denysenko
16.05.2018 18:57, Niall Litchfield пишет:
If you are doing client-side failover your TNS entry would need to be (I think)
ABCR_USR =
(DESCRIPTION =
*(FAILOVER=ON)*
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = abcr-prim-scan)(PORT = 1521)) <<< This is
new standby
(ADDRESS = (PROTOCOL = TCP)(HOST = abcr-stby-scan)(PORT = 1521)) <<< This is
new primary
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ABCR_USR)
)
)
You should check the Net Services Administration Guide to make sure I've got that in the right place (I likely haven't). The principle being though that if you aren't using TAF/FAN then its up to the client to retry addresses until one succeeds.
On Wed, May 16, 2018 at 9:55 AM, Doug Kushner <dougk5@xxxxxxx
<mailto:dougk5@xxxxxxx>> wrote:
Additional info as requested, all from the first node of the new standby
RAC server.
NAME TYPE VALUE
------------------------------------ -----------
-------------------------------------------
db_unique_name string ABCR1
service_names string ABCR_PERL,ABCR_TSAM,ABCR_USR,ABCR_WEB,ABCR1
The HOST names in the following ADDRESS_LIST are DNS cnames that alias the
scan names on each
of the platforms.
ABCR_USR =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = abcr-prim-scan)(PORT = 1521)) <<<
This is new standby
(ADDRESS = (PROTOCOL = TCP)(HOST = abcr-stby-scan)(PORT = 1521)) <<<
This is new primary
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ABCR_USR)
)
)
Listener entries for the other ABCR_* services are identical to the
ABCR_USR entry and have
been omitted.
LSNRCTL> services
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
Service "ABCR1" has 1 instance(s).
Instance "ABCR11", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1504 refused:0 state:ready
LOCAL SERVER
Service "ABCR1_DGB" has 1 instance(s).
Instance "ABCR11", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1504 refused:0 state:ready
LOCAL SERVER
Service "ABCR1_DGMGRL" has 1 instance(s).
Instance "ABCR11", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:32 refused:1
LOCAL SERVER
Service "ABCR_USR" has 1 instance(s).
Instance "ABCR11", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1504 refused:0 state:ready
LOCAL SERVER
The command completed successfully
On 5/16/2018 12:19 AM, Oleksandr Denysenko wrote:
Hello.
please, show from new standby:
* show parameter db_unique_name
* show parameter service_name
* lsnrctl services
* full desctiption of used TNS connection string
Best Regards,
Oleksandr Denysenko
16.05.2018 8:19, Doug Kushner пишет:
Hi all,
Please be kind as this is my first posting to this list.
We have two RAC platforms with 12.2.0.1 GI and 11.2.0.4 RDBMS replicating
with Data Guard.
Switchover testing was successful using the broker with the roles switching
successfully.
Services have been configured with the primary role on both platforms and
as expected, after
switchover the services are stopped on the new standby and started on the
new primary. The
applications are not TAF/FAN aware, so these tests assume for the time
being that we are
shutting down the apps (external connections) and restarting them after the
switchover.
Now for the question... We expected as part of this switchover, that the
services which
were stopped would automatically be de-registered from the listener on the
new standby side.
However, they are still registered, and we are wondering if it is our
expectations or our
configuration that is at fault.
With the services still registered on the standby side, sqlplus connection
attempts to the
service result in an ORA-01033 error, since the standby address is the
first of the two
addresses in the TNS alias.
Have not been able to find any info regarding deregistration of services in
the listener
after a switchover, so thought I would ask the experts.
Thanks,
Doug
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--
Niall Litchfield
Oracle DBA
http://www.orawin.info
