Re: Service de-registration after switchover question

  • From: Doug Kushner <dougk5@xxxxxxx>
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 16 May 2018 08:19:56 -0700

All indications are that the service resources are not running:
srvctl status service -d ABCR1 Service ABCR_PERL is not running. Service ABCR_TSAM is not running. Service ABCR_USR is not running. Service ABCR_WEB is not running. SQL> select name, database_role from v$database; NAME DATABASE_ROLE --------- ---------------- ABCR1 PHYSICAL STANDBY crsctl stat res -t -------------------------------------------------------------------------------- Name Target State Server State details -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.abcr1.abcr_perl.svc 1 OFFLINE OFFLINE STABLE ora.abcr1.abcr_tsam.svc 1 OFFLINE OFFLINE STABLE ora.abcr1.abcr_usr.svc 1 OFFLINE OFFLINE STABLE ora.abcr1.abcr_web.svc 1 OFFLINE OFFLINE STABLE ora.abcr1.db 1 ONLINE INTERMEDIATE server011 Mounted (Closed),HOM E=/u01/app/oracle/pr oduct/11.2.0.4/dbhom e_1,STABLE 2 ONLINE INTERMEDIATE server012 Mounted (Closed),HOM E=/u01/app/oracle/pr oduct/11.2.0.4/dbhom e_1,STABLE


On 5/16/2018 2:15 AM, Oleksandr Denysenko wrote:


so, actually, you have service *ABCR_USR*  started in some way on *ABCR1*

what is result of

    srvctl status service -d *ABCR1*

ABCR1 - is standby now ?

    SELECT database_role FROM v$database;

Best Regards,

     Oleksandr Denysenko
16.05.2018 11:55, Doug Kushner пишет:
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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