My Oracle Support Banner

How to Troubleshoot Connectivity Issue with 11gR2 SCAN Name (Doc ID 975457.1)

Last updated on MARCH 07, 2022

Applies to:

Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Net Services - Version to [Release 11.2]
Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.


The goal of this document is to provide checklist when connection through 11gR2 Grid Infrastructure (CRS) SCAN name to database fails.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
 Troubleshooting Steps
 Example Output
   SCAN name and VIP:
   Node Public Name/IP Address
   Nodes VIP Name/IP Address
   Database Name: <database_name>
   Service Name: <servise_name>
   TNS Connection String
 1. Checklist on RAC Cluster Nodes
     A. SCAN Listener Resource Status
       A1. SCAN Configuration:
       A2. SCAN Listener Configuration:
       A3. SCAN Listener Resource Status:
     B. SCAN Listener Status and Service
       B1. SCAN Listener Status:
       B2. SCAN Listener Service:
     C. Node Listener Status and Service
       C1. Node Listener Status:
       C2. Node Listener Service:
     D. Database Service Status
       D1. Service Resource Configuration
       D2. Service Resource Status:
     E. Instance Listener Parameter Setting:
       E1. remote_listener setting:
       E2. local_listener setting:
 2. Checklist on Client
     A. SCAN Name Resolution
     B. Node VIP name:

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.