When the service under websphere is started, it is displayed that it is not started under the cluster, and multiple services start the same. Check the systemError log under the /opt/IBM/WebSphere/AppServer/profiles/AppSvr01/logs path, and the result is java. lang.OutOfMemoryError: Java heap space memory overflow, I think it may be caused by two factors:
1. Too many logs cause memory overflow
2. Too many programs are started, causing the memory to explode
Next, I deleted all the logs and found that it was still not usable; then I checked the threads with ps -ef|grep java, and killed the node kill -9 3232 to delete the thread corresponding to margin148; secondly, each program was started individually, and it was found that the service could be used .