1) This issue is in the Production environment.

2) Jenkins Arhitecture:

Admin Server (WebLogic Console) - 2GB Xmx

Jenkins Server - 10GB Xmx

Current arhitecture is based on WebLogic Server 12.2.21.4.0 in the production environment, and jenkins.war is deployed as an application on WebLogic Server 12.2.1.4.0 and OpenJDK 8.

I tried this upgrade (from 2.319.X to 2.332.X or 2.346.1) on test enviroment, with WebLogic Server 14.1.1.0.0 and OpenJDK 11, and this issue persists.

The issue concerns ugprade procedure for Jenkins. Until jenkins.war version 2.319.X, jenkins behaviour was normal, everything worked good, all the plugins and so on. After the upgrade procedure to jenkins.war 2.332.3, jenkins behaviour was completely unexpected, such as when navigating in Jenkins UI, everything loads very slowly and all installed plugins are inoperable. This behaviour started with 2.332.X versions of jenkins.war, and is the same issue on 2.346.1.

I have attached below 3 screenshots of the weblogic process performance for these versions of jenkins.war:

1) jenkins.war 2.346.1 - jenkins deplyoment as an application on WebLogic Server 14.1.1.0.0 with OpenJDK 11, and the CPU has increased after I run 3 jobs and I navigating trough dashbord. The same behaviour is on WebLogic Server 12.2.1.4.0 and OpenJDK 8.

2) jenkins.war 2.332.4 - jenkins deplyoment as an application on WebLogic Server 14.1.1.0.0 with OpenJDK 11, and the CPU has increased after I run 3 jobs and I navigating trough dashbord. The same behaviour is on WebLogic Server 12.2.1.4.0 and OpenJDK 8.

3) jenkins.war 2.319.3 - jenkins deplyoment as an application on WebLogic Server 14.1.1.0.0 with OpenJDK 11. All stuff works good, all the plugins. The same behaviour is on WebLogic Server 12.2.1.4.0 and OpenJDK 8.