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Introduction to 600/7445 Internal Error Analysis (Doc ID 390293.1)

Last updated on APRIL 06, 2020

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


The purpose of this troubleshooting article is to provide an insight into key areas of internal
600/7445 trace files to assist in deriving to a known bug or to highlight what might be needed
by ORACLE Support to progress an issue further.  Whilst the article can be used to some
extent on 11g it is primarily written for versions <V10204 due to :-

a) The worked example is based on a bug fixed in V10204 and higher releases
b) The alert/trace file structure in 11g has changed

The article will make reference to other notes so that the traces for 11g can also
be proactively reviewed if wished.

The nature of Internal errors means no one approach can guarantee getting to a solution but again
the intention is to provide an indication on notes that support make available to customers and
a simple workflow process that assists for a vast majority of SRs. A simple example is illustrated
to generate a known bug that is harmless to the database when generated, that said it
should ONLY be used on a TEST database as it's not encouraged to willingly raise such errors in
'LIVE' environments. This example will then be used to highlight various sections and how each
section can be useful for general 600/7445 analysis and again to provide the best chance of
identifying a known bugfix should one be available.

The article also makes links to a number of others for completeness including <Note:232963.1>
should a testcase be required as is the ideal case for all internal errors but understandably
is not always possible dependent on the problem area.  Tests were made on SUN but the
bug is not platform specific, it may however show slightly different messages within the alert
log and for Windows based platforms some tools/notes might not be applicable.  However this
does not distract from the primary aim of how a trace file can be analyzed.

An Internal Error whether ORA-00600 or ORA-07445 can fall into many categories :-

Issue reproducible and testcase can be provided
Issue reproducible but no simple testcase perhaps due to code being oracle SQL, 3rd party SQL
Issue not reproducible but persistent and formulates to some pattern e.g. once a day
Issue not reproducible and random pattern to occurrences

By definition if an issue is not reproducible at will in a customer environment a testcase may
be very difficult to obtain but should always be attempted where possible.

These are a simplified subset, depending on root cause there can be many 600/7445 errors.
Typically the argument(s) of the error when unique should mean each are different problems
but if occurring on same timestamp or one always soon follows another there might be some
relationship and this will be for support to determine.

Troubleshooting Steps

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Troubleshooting Steps

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