JDBC Thin Driver 11g Causes "Java.Sql.Sqlexception: Io Exception: The Network Adapter Could Not Establish The Connection" While Connecting to Oracle Database 11g (Doc ID 947653.1)

Last updated on OCTOBER 25, 2016

Applies to:

JDBC - Version 11.1.0.6 and later
Information in this document applies to any platform.
***Checked for relevance on 28-Jan-2014***

Symptoms

JDBC THIN client connections from your application server began failing shortly after dataguard was implemented. The class used to implement the JDBC driver is:

oracle.jdbc.driver.OracleDriver


Error message received:
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection

Cause

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