ASM Not starting after changing the Hostname or IP Address of the Server

I just wanted to share my small experience with ASM. In our organization, the OS Admins changed the Hostname of one our database servers where Grid Infrastructure is installed. But after changing it, ASM services were not able to start. So here is the scenario and try outs of mine,.

Changing HOSTNAME and IP ADDRESS in GI (Standby Alone Server)

SERVER1:/usr2/oracle />hostname SERVER1-OLD
hostname: 0821-267 The sethostname system call failed.
: Operation not permitted.
SERVER1:/usr2/oracle />hostname SERVER1-OLD
hostname: 0821-267 The sethostname system call failed.
: Operation not permitted.
SERVER1:/usr2/oracle />hostname
SERVER1-OLD

SERVER1:/usr2/oracle />crsctl start has
SERVER1:/usr2/oracle />crsctl check has
CRS-4639: Could not contact Oracle High Availability Services

So you can clearly see that, my HAS was not able to start at all after changing the HOSTNAME.

After some research, I came to know that we have to Reconfigure the HAS. Below are the steps which I followed., These steps has to be carried out as a root user.

Deconfigure the HAS

root@SERVER1:/usr2/grid/product/11.2.0.4/crs/install #
root@SERVER1:/usr2/grid/product/11.2.0.4/crs/install #./roothas.pl -deconfig -force

Using configuration parameter file: ./crsconfig_params
CRS-4639: Could not contact Oracle High Availability Services
CRS-4000: Command Stop failed, or completed with errors.
CRS-4639: Could not contact Oracle High Availability Services
CRS-4000: Command Delete failed, or completed with errors.
CLSU-00100: Operating System function: opendir failed with error data: 2
CLSU-00101: Operating System error message: No such file or directory
CLSU-00103: error location: scrsearch1
CLSU-00104: additional error information: cant open scr home dir scls_scr_getval
CRS-4544: Unable to connect to OHAS
CRS-4000: Command Stop failed, or completed with errors.
This may take several minutes. Please wait ...
0518-307 odmdelete: 1 objects deleted.
0518-307 odmdelete: 1 objects deleted.
0518-307 odmdelete: 1 objects deleted.
Successfully deconfigured Oracle Restart stack

Reconfigure the HAS

SERVER1:/usr2/grid/product/11.2.0.4/crs/install />./roothas.pl

root@SERVER1:/usr2/grid/product/11.2.0.4/crs/install # ./roothas.pl
Using configuration parameter file: ./crsconfig_params
User ignored Prerequisites during installation
LOCAL ADD MODE
Creating OCR keys for user 'oracle', privgrp 'oradba'..
Operation successful.
LOCAL ONLY MODE
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'system'..
Operation successful.
CRS-4664: Node SERVER1 successfully pinned.
Adding Clusterware entries to inittab

SERVER1 2014/09/22 07:58:46 /usr2/grid/product/11.2.0.4/cdata/SERVER1/backup_20140922_075846.olr
Successfully configured Oracle Grid Infrastructure for a Standalone Server
root@SERVER1:/usr2/grid/product/11.2.0.4/crs/install #

Add the LISTENER Service

SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl add listener -l LISTENER

Start the LISTENER Service

SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl start listener
SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): SERVER1
SERVER1:/usr2/grid/product/11.2.0.4/dbs />crs_stat ora.LISTENER.lsnr
NAME=ora.LISTENER.lsnr
TYPE=ora.listener.type
TARGET=ONLINE
STATE=ONLINE on SERVER1

Add the ASM service

SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl add asm -l LISTENER -p "/usr2/grid/product/11.2.0.4/dbs/spfile+ASM.ora"
SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl start asm
PRCR-1079 : Failed to start resource ora.asm
CRS-2674: Start of 'ora.asm' on 'SERVER1' failed
CRS-5022: Stop of resource "ora.asm" failed: current state is "INTERMEDIATE"
CRS-2678: 'ora.asm' on 'SERVER1' has experienced an unrecoverable failure
CRS-5804: Communication error with agent process
SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl status asm
ASM is not running.
You have mail in /usr/spool/mail/oracle

SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl add asm -l LISTENER -p "/usr2/grid/product/11.2.0.4/dbs/spfile+ASM.ora"
PRCR-1086 : resource ora.asm is already registered
SERVER1:/usr2/grid/product/11.2.0.4/dbs />

Start the ASM Service

SERVER1:/usr2/grid/product/11.2.0.4/dbs />srvctl start asm
SERVER1:/usr2/grid/product/11.2.0.4/dbs />ps -ef |grep pmon
 oracle 10092730 1 0 08:14:20 - 0:00 asm_pmon_+ASM
SERVER1:/usr2/grid/product/11.2.0.4/dbs />

Check the status of the CRS as below.,

SERVER1:/usr2/oracle />crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA.dg ora....up.type ONLINE ONLINE ifcd...gpd1
ora....ER.lsnr ora....er.type ONLINE ONLINE ifcd...gpd1
ora.asm ora.asm.type ONLINE ONLINE ifcd...gpd1
ora.cssd ora.cssd.type ONLINE ONLINE ifcd...gpd1
ora.diskmon ora....on.type OFFLINE OFFLINE
ora.evmd ora.evm.type ONLINE ONLINE ifcd...gpd1
ora.ons ora.ons.type ONLINE ONLINE ifcd...gpd1
SERVER1:/usr2/oracle />

Hope this is helpful.. Thanks for supporting.. 🙂