Thursday 24 September 2020

Cluster Service with and without Domain Parameter

Service with Domain Parameter: 
SQL> show parameter domain
NAME      TYPE VALUE
------------------------------------ ----------- ------------------------------
db_domain      string corporation.local

Add Service with srvctl: (If you do not qualify the names in this parameter with a domain, Oracle qualifies them with the value of the DB_DOMAIN parameter) 

[oracle@racnode05 ~]$srvctl add service -d poc19c00 -r POC19C001,POC19C002 -s poc19c0_s1 -l PRIMARY -e SELECT -m BASIC -P BASIC
   
[oracle@racnode05 ~]$ srvctl start service -d poc19c00
[oracle@racnode05 ~]$ srvctl status service -d poc19c00
Service poc19c0_s1 is running on instance(s) POC19C001,POC19C002

Service details from listener status:
[oracle@racnode05 ~]$ lsnrctl status listener
LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 24-SEP-2020 03:37:12
Copyright (c) 1991, 2020, Oracle.  All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 19.0.0.0.0 - Production
Start Date                23-SEP-2020 23:50:42
Uptime                    0 days 3 hr. 46 min. 29 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/19.0.0/grid/network/admin/listener.ora
Listener Log File         /oracle/grid/diag/tnslsnr/racnode05/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=00.000.00.5)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=00.000.00.6)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_ORADSKGRP1" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_ORADSKGRP2" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_VOTEDISK" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "POC19C00" has 1 instance(s).
  Instance "POC19C001", status READY, has 2 handler(s) for this 
service...
Service "poc19c0_s1.corporation.local" has 1 instance(s).
  Instance "POC19C001", status READY, has 2 handler(s) for this service...
The command completed successfully

Service without  Domain Parameter: 
SQL> show parameter domain
NAME      TYPE VALUE
------------------------------------ ----------- ------------------------------
db_domain      string corporation.local

unset domain parameter and restart db:
SQL>  alter system set db_domain='' scope=spfile sid='*';
System altered.

[oracle@racnode05 ~]$ srvctl status database -d poc19c00
Instance POC19C001 is running on node racnode05
Instance POC19C002 is running on node racnode06

[oracle@racnode05 ~]$ srvctl stop database -d poc19c00
[oracle@racnode05 ~]$ srvctl start database -d poc19c00
[oracle@racnode05 ~]$ srvctl status database -d poc19c00
Instance POC19C001 is running on node racnode05
Instance POC19C002 is running on node racnode06

Check Service details:
[oracle@racnode05 ~]$ lsnrctl status listener

LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 24-SEP-2020 03:41:03
Copyright (c) 1991, 2020, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 19.0.0.0.0 - Production
Start Date                23-SEP-2020 23:50:42
Uptime                    0 days 3 hr. 50 min. 20 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/19.0.0/grid/network/admin/listener.ora
Listener Log File         /oracle/grid/diag/tnslsnr/racnode05/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=00.000.00.5)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=00.000.00.6)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_ORADSKGRP1" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_ORADSKGRP2" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_VOTEDISK" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "POC19C00" has 1 instance(s).
  Instance "POC19C001", status READY, has 2 handler(s) for this 
service...
Service "poc19c0_s1" has 1 instance(s).
  Instance "POC19C001", status READY, has 2 handler(s) for this service...
The command completed successfully

If DB_DOMAIN is not specified, then no domain will be applied to the non-qualified SERVICE_NAMES values