Depending on the operating system in use, the verboseGC output will be written to the following file by default:
AIX, Linux, or Windows: native_stderr.log
Solaris or HP-UX native_stdout.log
References:http://www-01.ibm.com/support/docview.wss?uid=swg21114927

The Web Services Security specification provides a flexible framework for building secure web services to implement message content integrity and confidentiality. The Web Services Security service programming model supports this flexible framework by providing extension points to integrate new token formats, and methods to obtains keys needed for message protection. The application server programming model provides Web Services Security programming application programming interfaces (WSS API) for securing SOAP messages.
Note: WS-Security is a message-level standard that is based on securing SOAP messages through XML digital signature, confidentiality through XML encryption, and credential propagation through security tokens. The Web services security specification defines the facilities for protecting the integrity and confidentiality of a message and provides mechanisms for associating security-related claims with the message.

Administering nodes remotely using the job manager
In a flexible management environment, you can asynchronously submit and administer jobs for large numbers of stand-alone application servers, deployment managers, and host computers over a geographically dispersed area. At the remote machines, you can use jobs to manage applications, modify the product configuration, or do general purpose tasks such as run a script.
Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/ tagt_jobmgr.html

Explanation/Reference:
PMI data can be gathered from the J2EE managed object MBeans or the WebSphere Application Server PMI Perf MBean.
References: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/ com.ibm.websphere.nd.doc/ae/cprf_pmi_datacol.html