<?xml version="1.0"?>
<api>
  <error code="internal_api_error_DBConnectionError" info="Exception Caught: DB connection error: Too many connections (localhost)" xml:space="preserve">

#0 /var/www/clockss-documents/mediawiki/includes/db/LoadBalancer.php(726): DatabaseBase->reportConnectionError('Unknown error (...')
#1 /var/www/clockss-documents/mediawiki/includes/db/LoadBalancer.php(492): LoadBalancer->reportConnectionError()
#2 /var/www/clockss-documents/mediawiki/includes/GlobalFunctions.php(3499): LoadBalancer->getConnection(-1, Array, false)
#3 /var/www/clockss-documents/mediawiki/includes/ChangeTags.php(267): wfGetDB(-1)
#4 /var/www/clockss-documents/mediawiki/includes/api/ApiFeedContributions.php(172): ChangeTags::listDefinedTags()
#5 /var/www/clockss-documents/mediawiki/includes/api/ApiBase.php(557): ApiFeedContributions->getAllowedParams(0)
#6 /var/www/clockss-documents/mediawiki/includes/api/ApiBase.php(653): ApiBase->getFinalParams()
#7 /var/www/clockss-documents/mediawiki/includes/api/ApiMain.php(715): ApiBase->extractRequestParams()
#8 /var/www/clockss-documents/mediawiki/includes/api/ApiMain.php(819): ApiMain->setupModule()
#9 /var/www/clockss-documents/mediawiki/includes/api/ApiMain.php(380): ApiMain->executeAction()
#10 /var/www/clockss-documents/mediawiki/includes/api/ApiMain.php(351): ApiMain->executeActionWithErrorHandling()
#11 /var/www/clockss-documents/mediawiki/api.php(77): ApiMain->execute()
#12 {main}

</error>
</api>