SCAN LISTENER runs from only one node at a time from /etc/hosts !

Question

Dear all ,
Recently I have to configure RAC in oracle 11g(r2) in AIX 6.1 . Since in this moment it is not possible to configure DNS, so I dont use SCAN ip into the DNS/GNS, I just add the SCAN ip into the host file like :
cat /etc/hosts
SCAN 172.17.0.22
Got the info from : http://www.freeoraclehelp.com/2011/12/scan-setup-for-oracle-11g-release211gr2.html#ORACLE11GR2RACINS
After configuring all the steps of RAC , Every services are ok except SCAN_LISTENER . This listener is up only one node at a time . First time when I chek it from node1 , it shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr1
now when I relocate it from node 2 using
"srvctl relocate scan -i 1-n DCDBSVR2" , then the output shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr2
Baring these , we have to try to relocate it from the node2 by the following way, then it shows the error :
srvctl relocate scan -i 2 -n DCDBSVR2
resource ora.scan2.vip does not exists
Now my question , How can I run the SCAN and SCAN_LISTENER both of the NODES ?
Here is my listener file (which is in the GRID home location) configuration :
Listener File OF NODE1 AND NODE 2:
==================================
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON
LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC) (KEY = LISTENER_SCAN1)
ADR_BASE_LISTENER_SCAN1 = /U01/APP/ORACLE
2)
Another issue , when I give the command : " ifconfig -a " , then it shows the SCAN ip either node1 or node2 . suppose if the SCAN ip is in the node1 , and then if I run the "relocate" command from node2 , the ip goes to the Node 2 . is it a correct situation ? advice plz ... ...
thx in advance .. ...
Edited by: shipon_97 on Jan 10, 2012 7:22 AM
Edited by: shipon_97 on Jan 10, 2012 7:31 AM

Answer 1

After configuring all the steps of RAC , Every services are ok except SCAN_LISTENER . This listener is up only one node at a time . First time when I chek it from node1 , it shows :If I am not wrong and after looking at the document you sent, you will be able to use only once scan in case you use /etc/host file and this will be up on only one node where you added this scan entry in /etc/hosts file.
Now my question , How can I run the SCAN and SCAN_LISTENER both of the NODES ?Probably you can't in your case, you might run only one i think and on one node only
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr1
now when I relocate it from node 2 using
"srvctl relocate scan -i 1 -n DCDBSVR2" , then the output shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr2You moved scan listener from node 1 to node 2, OK
Baring these , we have to try to relocate it from the node2 by the following way, then it shows the error :
srvctl relocate scan -i 2 -n DCDBSVR2
resource ora.scan2.vip does not exists
--------------------------------------------------------------------------------Since you have only one scan, you can't relocate "2". So ise "1" instead here also
FYI
http://www.oracle.com/technetwork/database/clustering/overview/scan-129069.pdf
Salman