FMw 12.2.1.3.0: "ONS configuration failed" or "oracle.ons.NoServersAvailable: Subscription time out"

(Doc ID 2308193.1)

Last updated on OCTOBER 19, 2017

Applies to:

JDBC - Version 12.2.0.0.0 and later
Information in this document applies to any platform.

Symptoms

After upgrading Fusion Middleware (FMW) from 12.2.1.2.0 to 12.2.1.3.0, JDBC fails with the error "ONS configuration failed" or "Subscription time out".

Exception stack


Observations
- Exact same configuration works fine in SQL Developer (17.2.0.188.1159).
- This issue is consistent.
- Issue is seen for all datasources.
- Issue is seen while creating a new datasource as well as while testing an existing datasource.
- This is a single instance database, not RAC, so no ONS service running.

Changes

FMW was upgraded from 12.2.1.2.0 to 12.2.1.3.0.

Cause

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