I had an Exalogic and a Sparc SuperCluster T4-4 connected together by infiniband for a set of tests. This meant that I was able to enable SDP and IP over the infiniband network.
To configure it, I had followed the instructions in the Exalogic Manual.
After setting the listener_networks parameter I checked whether the services had registered correctly with the scan listener. Expected behaviour is to see all instances registered with all 3 scan listeners
– Set your environment to the GRID_HOME
- Check which nodes are running the scan listener as you can only interrogate the listener from that node oracle@ssca01:~$ srvctl status scan SCAN VIP scan1 is enabled SCAN VIP scan1 is running on node ssca03 SCAN VIP scan2 is enabled SCAN VIP scan2 is running on node ssca04 SCAN VIP scan3 is enabled SCAN VIP scan3 is running on node ssca01
So on ssca01, I can check the status of LISTENER_SCAN1 ..
And it had no services registered. Strange. Checked all of my listeners and only LISTENER_SCAN3 had any services registered
oracle@ssca01:~$ /u01/app/18.104.22.168/grid/bin/lsnrctl status LISTENER_SCAN3 LSNRCTL for Solaris: Version 22.214.171.124.0 - Production on 06-SEP-2012 15:20:43 Copyright (c) 1991, 2011, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN3))) STATUS of the LISTENER ------------------------ Alias LISTENER_SCAN3 Version TNSLSNR for Solaris: Version 126.96.36.199.0 - Production Start Date 30-AUG-2012 15:59:53 Uptime 6 days 23 hr. 20 min. 49 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/app/188.8.131.52/grid/network/admin/listener.ora Listener Log File /u01/app/184.108.40.206/grid/log/diag/tnslsnr/ssca01/listener_scan3/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN3))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=220.127.116.11)(PORT=1521))) Services Summary... Service "ibs" has 3 instance(s). Instance "IBS2", status READY, has 1 handler(s) for this service... Instance "IBS3", status READY, has 1 handler(s) for this service... Instance "IBS4", status READY, has 1 handler(s) for this service... The command completed successfully
I was confident my scan address was registered correctly in the DNS
oracle@ssca01:~$ nslookup ssca-scan Server: 18.104.22.168 Address: 22.214.171.124#53 Name: ssca-scan.blah.com Address: 126.96.36.199 Name: ssca-scan.blah.com Address: 188.8.131.52 Name: ssca-scan.blah.com Address: 184.108.40.206
I looked on Oracle Support and I could find no other reports of this problem, but then only a small proportion of customers will be running in this configuration.
However, I did find a note 1448717.1 that documented a similar problem with the remote_listener parameter.
So, I amended my tnsnames.ora file so that my LISTENER_IPREMOTE alias included the 3 scan ip addresses
#LISTENER_IPREMOTE = # (DESCRIPTION = # (ADDRESS = (PROTOCOL = TCP)(HOST = ssca-scan.blah.com)(PORT = 1521)) # ) LISTENER_IPREMOTE = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 220.127.116.11)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 18.104.22.168)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 22.214.171.124)(PORT = 1521)) )
You can trace the PMON registration process by setting the following database event
alter system set events=’immediate trace name listener_registration level 3′;
and then issue a alter system register; to force pmon to re-register to listeners.
This will produce a trace file in background_dump dest
Looking through this logfile I saw it was still trying to register with the SCAN address.
Remote listeners: 0 - (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ssca-scan.osc.uk.oracle.com)(PORT=1521))) state=1, err=0 nse=0, nse=0, nte=0, nte=0, nte=0 ncre=0 endp=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ssca-scan.osc.uk.oracle.com)(PORT=1521))) flg=0x0 nse=12545
At this point I realised that the tnsnames.ora must only be checked at certain times, such as database startup. So, I restarted my database.
Success! On checkng all of my scan listeners they all had services registered.