After Database Restart Connections in the Pool Return Error: "SQLException: No More Data to Read from Socket" (Doc ID 400349.1)

Last updated on JUNE 02, 2023

Applies to:

Symptoms

When a database is restarted, AS 10.1.2 connections in the datasource's pool return an error to the applications, and the connection is kept in the pool,

so every attempt from applications to connect to the database keeps aborting with errors.

The error reported could be one of the following:

 java.sql.SQLException: No more data to read from socket 
 java.sql.SQLException: OALL8 is in an inconsistent state.
 java.sql.SQLException: Io exception: Broken pipe

Changes

The issue documented here occurred during an application migration from AS 9.0.3.1 to AS 10.1.2. 

The AS 9.0.3 application worked OK after a restart of the Database.

So this note documents how to handle this scenario in AS 10.1.2. Nevertheless, the solution here is more generic and it can also apply when working with non-oracle databases.

Cause

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.