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 11.2.0.4 to 11.2.0.4 [Release 11.2]
Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.

Goal

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

Solution

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In this Document

Troubleshooting Steps

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:

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