how to disable these debug messages in server.log
DEBUG [org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@14a616, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@47e53a{ url=null ,addedOrder=0}
DEBUG [org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@14a616, cl=org.jboss.mx.loading.UnifiedClassLoader3@1a5678{ url=null ,addedOrder=0}
DEBUG [org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@14a616, cl=org.jboss.mx.loading.UnifiedClassLoader3@1e90abf{ url=null ,addedOrder=0}
DEBUG [org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@14a616, cl=org.jboss.mx.loading.UnifiedClassLoader3@46b75b{ url=null ,addedOrder=0}
DEBUG [org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@14a616, cl=org.jboss.mx.loading.UnifiedClassLoader3@afcd0c{ url=null ,addedOrder=0}