in log4jperl what are the differences between : 
log4perl.rootLogger
log4perl.logger
log4perl.category

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The only way I was able to direct ERRORS to separate file was to use : 
'log4perl.rootLogger' => 'DEBUG, Screen,AppLog',
'log4perl.rootLogger.ERRORS'  => 'ERROR, errorsAppender'

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Next step will be to save errors only at errorsAppender , I think I had to use 'additivity'!?
Other question would be how can I switch off 'Screen' appender on the fly in the code ?

PS> my mistake log4perl.rootLogger.ERRORS, didn't work!!
filter worked, but if you know of a better solution ? 
'log4perl.rootLogger' => 'DEBUG, Screen,AppLog,errors',
      'log4perl.filter.MatchErr'   =>   'Log::Log4perl::Filter::LevelM
+atch',
      'log4perl.filter.MatchErr.LevelToMatch'  => 'ERROR',
      'log4perl.filter.MatchErr.AcceptOnMatch' => 'true',

      'log4perl.appender.errors.Filter'   => 'MatchErr',

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In reply to Log4j logger's by rootcho

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