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https://issues.apache.org/jira/browse/LOG4J2-992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14483123#comment-14483123
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Ralph Goers commented on LOG4J2-992:
------------------------------------

I am guessing your "nope" was to Remko, not to me.  Please see 
http://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout - in 
particular the sentence "If the pattern string does not contain a specifier to 
handle a Throwable being logged, parsing of the pattern will act as if the 
"%xEx" specifier had be added to the end of the string."

You need to add "%ex" before the "%n" in your patterns to remove the extra 
formatting that requires access to the class objects.

> ThrowableProxy throws NoClassDefFoundError (v2.2)
> -------------------------------------------------
>
>                 Key: LOG4J2-992
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-992
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.2
>         Environment: IBM J9 VM
>            Reporter: CEM DAYANIK
>
> Might be considred as duplicate of LOG4J2-834.
> log4j2 classes tries to load classes which makes "static" blocks to run.
> Out pattern is the following:
> [%d] [%-5p] [%t] [%c] - %m%n
> How can we avoid this one for now?
> According to docs, there is not any info there related to "location info"?
> Isnt this supposed to happen at least when log4j2 tries to get information 
> about location info?



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