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"The Network Adapter could not establish the connection" When Connecting To SCAN Listener Via JDBC Thin Due to Firewall "inspect sqlnet" or "deep packet inspection" (Doc ID 1398979.1)

Last updated on FEBRUARY 07, 2022

Applies to:

Oracle Database - Enterprise Edition - Version and later
Java Platform, Standard Edition - Version 1.5.0 and later
JDBC - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Information in this document applies to any platform.


JDBC thin connections are failing with the following error when attempting to connect to a RAC Database service with the local listener is using a non-default port number.


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