Hi, I have Tomcat 9.0.53 and i deployed a war file APP.war with 2 differents libs
- app/WEB-INF/lib/javax.mail-1.6.0.jar - app/WEB-INF/lib/mail-1.4.jar QA environment hardware properties: Mem: 6809 Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit CPU(s): 2 Model name: Intel(R) Xeon(R) CPU E7-4850 v4 @ 2.10GHz Production environment hardware properties: Mem: 25960 Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit CPU(s): 13 Model name: Intel(R) Xeon(R) CPU E7-4890 v2 @ 2.80GHz In my QA env tomcat class loaders use javax.mail-1.6.0.jar for method javax.mail.Authenticator [23.922s][info][class,load] javax.mail.Authenticator source: file:/tomcat-9.0.54/webapps/app/WEB-INF/lib/javax.mail-1.6.0.jar but in my Prod env tomcat use mail-1.4.jar for same method [12.306s][info][class,load] javax.mail.Authenticator source: file:/tomcat-9.0.54/webapps/app/WEB-INF/lib/mail-1.4.jar Do you know why Tomcat class loader use different libs in two different environments? Do you have best practices to force tomcat to always use the latest libs in different environments? Thanks & Regards Ricardo