Changing an IP address SCAN listener and VIP in Oracle 11G

This is a quick and dirty way to modify the SCAN listener, Public IP and Virtual IP for an Oracle 11G

database

This change was carried out on Linux OS but is applicable to most *nix

As Grid owner

 . oraenv

/oifcfg getif 

crsctl stat res -t

srvctl stop instance -d testdb -i testdb1

srvctl stop instance -d testdb -i testdb2

* If CRS is on ASM disks shutdown CRS first as root on both nodes -- crsctl stop crs

srvctl stop asm -n plrac2 -f

crsctl stat res -t

srvctl disable database -d testdb

srvctl disable nodeapps

Modify /etc/hosts

ifdown eth0

modify ip address: vi /etc/sysconfig/network-scripts/ifcfg-eth0

ifup eth0

confirm changes: ifconfig -a

========================================================================

SCAN Listener:

AS grid owner

$ ./srvctl stop scan_listener

$ ./srvctl stop scan

$ ./srvctl config scan

$ ./srvctl remove scan_listener -f

$ exit

exit

#./srvctl remove scan -f

#./srvctl add scan -n plrac_cluster

#./srvctl config scan

#su oracle

$ ./srvctl add scan_listener -p 1521

$ ./srvctl config scan

===============================================================================

As root

srvctl modify nodeapps -n plrac1 -A plrac1/255.255.255.0

srvctl modify nodeapps -n plrac2 -A plrac2/255.255.255.0

./srvctl config scan

verify the changes:

 srvctl config nodeapps -a

./srvctl config scan

as root:

srvctl enable nodeapps

srvctl enable database -d testdb

as grid owner:

srvctl start vip -n plrac1

srvctl start vip -n plrac2

srvctl start instance -d testdb -n plrac1

srvctl start instance -d testdb -n plrac2