The scan comes up using only one IP address although three IP addresses are assigned to it

(Doc ID 2344224.1)

Last updated on JANUARY 05, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Trying to increase number of scan IP addresses to 3 from 1 fails. 

The scan continues to come up only with one IP address and "scan config scan" also only shows one IP address.

$ srvctl config scan shows only 1 IP address for scan

SCAN name: scan_for_the_cluster, Network: 1
Subnet IPv4: 10.108.100.0/255.255.255.0/eth1, static
Subnet IPv6:
SCAN 0IPv4 VIP: 10.108.100.217
SCAN VIP is enabled.
SCAN VIP is individually enabled on nodes:
SCAN VIP is individually disabled on nodes:

$ srvctl status scan

SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node node2

 

The nslookup shows three IP addresses

nslookup scan_for_the_cluster
Server: 192.x.x.x
Address: 192.x.x.x#53

Non-authoritative answer:
Name: scan_for_the_cluster.oracle.com
Address: 10.108.100.217, 10.108.100.218, 10.108.100.219

 

 

Cause

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