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Master Note: Troubleshooting ORA-03113 (Doc ID 1506805.1)

Last updated on AUGUST 25, 2021

Applies to:

Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 9.2.0.1 to 12.1.0.1 [Release 9.2 to 12.1]
Oracle Net Services - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 11-Jan-2016***

Purpose

An ORA-3113 "end of file on communication channel" error is a general error usually reported by a client process connected to an Oracle database. The error basically means 'I cannot communicate with the Oracle shadow process'. As it is such a general error more information must be collected to help determine what has happened - this error by itself does not indicate the cause of the problem. For example, ORA-3113 could be signalled for any of these following scenarios:

This article describes what information to collect for an ORA-3113 error. It is common for this error to be accompanied by other errors such as:

These are all symptomatic of being disconnected from Oracle.

NOTE:
This note is an updated version of archived
<Note 17613.1> - ORA-03113 on Unix - What Information to Collect
For older information, please refer to <Note 17613.1>

 


Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 (A)  ORA-3113 when attempting to STARTUP Oracle
 A1)  Errors connecting as SYSDBA or on startup nomount
 A2)  Errors Mounting the database
 A3)  Errors on RECOVER DATABASE
 A4)  Errors on ALTER DATABASE OPEN
 (B)  ORA-3113 attempting to connect to the database using Oracle Net
 (C)  Client sees ORA-3113 running SQL / PLSQL
 (D)  Server trace reports ORA-3113
 (E)  Additional Checks / Information
References

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