Two ear files are deployed on EAP instance and both are configured to use different logging profile through EAR/META-INF/MANIFEST.MF file.
WAR file from EAR uses some libraries those are present in the "lib" folder of each ear file. Application1.ear which logs in app1.log and Application2.ear which logs in app2.log.
when we access application we can see logging from EAR1 into EAR2 log file .