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Cannot Establish Connection (Error Code: 17002) Randomly With JDBC Thin Driver (Doc ID 357445.1)

Last updated on JULY 31, 2018

Applies to:

JDBC - Version 10.2.0.1 and later
Information in this document applies to any platform.

Symptoms

When using the ORACLE  JDBC thin driver  to access a database server instance, it  fails with the following Exception:

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

This happens when looping on the following sequence :

After executing N times (randomly) this sequence of code fails at connection time.

Cause

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