Autosys r12.1 installation - Is ICMP Ping or Echo (Port 7) required to validate to database server?

Products

• CA Workload Automation AE - Business Agents (AutoSys)

Issue/Introduction

While install Autosys r12.1 using Oracle 19c as the Event Server, the installation fails to validate the database connectivity with the following error:

[main] DEBUG com.ca.wla.ae.installer.util.HostUtils - Address reachability check failed  [host=( hostname.domain.com), timeout=(100)]
[main] ERROR com.ca.wla.ae.installer.customaction.validate.AEValidateDatabaseServerHostPort - Following host is not reachable: hostname.domain.com
[main] ERROR com.ca.wla.ae.installer.logger.LogHelper - [CAUAJM_W_114005] The following host(s) are unreachable: "hostname.domain.com"

After analyzing network traffic hitting the firewall between the WAAE server and the database server, and there is not any connection attempts to destination port 1521.
Rather saw attempts to reach destination port 7 (which is Echo protocol) on the database server.

Environment

Release : 12

Component : CA WORKLOAD AUTOMATION ADVANCED INTEGRATION FOR HADOOP

Resolution

During installation process ICMP ping echo protocol using port 7 is being used. 

You can either use following workarounds:

1. export IA_AE_SKIP_DB_CHECK=1
    relaunch the installation

2. temporarily allow ICMP ping echo request on port 7. After installation, it can be disallowed again.