I have installed Oracle RAC with ASM on Oracle Linux 5.8. My database version is 11.2.0.1. I have 2 node in my plan and all of them are active. I set scan in my DNS server but I can not connect to database with scan listener. I can connect to each node with their VIP. Some of data about listener is listed in below.
[grid@rac1 ~]$ srvctl config scan_listener
SCAN Listener LISTNERE_SCAN_1_SCAN1 exists. Port: TCP:1521
[grid@rac1 ~]$ srvctl status scan_listener
SCAN Listener LISTNERE_SCAN_1_SCAN1 is enabled
SCAN listener LISTNERE_SCAN_1_SCAN1 is running on node rac1
[grid@rac1 ~]$ lsnrctl status LISTNERE_SCAN_1_SCAN1
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-JUL-2015 05:46:23
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTNERE_SCAN_1_SCAN1)))
STATUS of the LISTENER
------------------------
Alias LISTNERE_SCAN_1_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 02-JUL-2015 05:04:58
Uptime 0 days 0 hr. 41 min. 25 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /u01/app/11.2.0/grid/log/diag/tnslsnr/rac1/listnere_scan_1_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTNERE_SCAN_1_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.245)(PORT=1521)))
Services Summary...
Service "orcl" has 2 instance(s).
Instance "orcl1", status READY, has 1 handler(s) for this service...
Instance "orcl2", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 2 instance(s).
Instance "orcl1", status READY, has 1 handler(s) for this service...
Instance "orcl2", status READY, has 1 handler(s) for this service...
The command completed successfully
[grid@rac1 ~]$ lsnrctl sERVICES LISTNERE_SCAN_1_SCAN1
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-JUL-2015 05:46:58
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTNERE_SCAN_1_SCAN1)))
Services Summary...
Service "orcl" has 2 instance(s).
Instance "orcl1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:blocked
REMOTE SERVER
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1-vip)(PORT=1521)))
Instance "orcl2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:blocked
REMOTE SERVER
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac2-vip)(PORT=1521)))
Service "orclXDB" has 2 instance(s).
Instance "orcl1", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: rac1.localdomain, pid: 5305>
(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.localdomain)(PORT=30855))
Instance "orcl2", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: rac2.localdomain, pid: 5293>
(ADDRESS=(PROTOCOL=tcp)(HOST=rac2.localdomain)(PORT=36946))
The command completed successfully
[grid@rac1 ~]$nano /u01/app/11.2.0/grid/network/admin/listener.ora
LISTNERE_SCAN_1_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTNERE_SCAN_1_SCAN1)))) # $
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
# listener.ora.rac1 Network Configuration File: /u01/app/11.2.0/grid/network/admin/listener.ora.rac1
# Generated by Oracle configuration tools.
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1 = ON
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER1 = ON
LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER_SCAN1))
)
)
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTNERE_SCAN_1_SCAN1=ON # line added by Agent
[oracle@rac1 ~]$ nano /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
[oracle@rac1 ~]$ nano /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 02-JUL-2015 05:56:20
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan.localdomain)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
OK (20 msec)
The error when I want to connect to racdb with scan name is:
[oracle@rac1 ~]$ sqlplus system/oracle@orcl
SQL*Plus: Release 11.2.0.1.0 Production on Thu Jul 2 05:57:03 2015
Copyright (c) 1982, 2009, Oracle. All rights reserved.
ERROR:
ORA-12520: TNS:listener could not find available handler for requested type of server
state:blocked
. Is the name resolution set up correctly for public and VIP names? (DNS or/etc/hosts
)lsnrctl status listener
,lsnrctl services listener
.