IBM Exam C9510-401 Topic 2 Question 25 Discussion

Actual exam question for IBM's C9510-401 exam

Question #: 25
Topic #: 2

A system administrator is asked by a development team to monitor the performance of a newly deployed EJB application. The administrator noticed that the heap size of the application server is growing.

What should the administrator do to fix the problem using ORB settings?

AUse J2EE managed object MBeans.

BEnable the pass by reference option.

CDisable the application scoped resources in the application deployment descriptor.

DEnsure that Process embedded configurations is not selected when exporting the EAR.

Show Suggested Answer

Suggested Answer: B

The Object Request Broker (ORB) pass by reference option determines if pass by reference or pass by value semantics should be used when handling parameter objects involved in an EJB request. This option can be found in the administrative console by navigating toServers => Application Servers =>server_name=> Object Request Broker (ORB). By default, this option is disabled and a copy of each parameter object is made and passed to the invoked EJB method. This is considerably more expensive than passing a simple reference to the existing parameter object.

References: https://www.ibm.com/developerworks/websphere/techjournal/0909_blythe/0909_blythe.html#sec3e

by Leonida at May 07, 2022, 07:16 AM

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