The file j9vrb23.dll is a verbose output library for IBM SDK (Software Development Kit), Java2 Technology Edition from International Business Machines Corporation. A verbose output library allows for better troubleshooting by giving more detailed messages to the user.
Turning on a verbose output is a bit like turning on a play-by-play for the computer. You will get a lot of information, some of it very helpful if you have a problem that you are investigating. This file is part of a Java module, so if you are troubleshooting in Java you may need this file.
An error with this file may indicate a problem in your registry, the Windows database that tracks everything installed on your computer. You can find out by running a registry cleaner like ZookaWare PC Cleaner. ZookaWare PC Cleaner will find and fix every mistake in your registry and get it running at 100% again. Most dll file errors are caused by mistakes in the registry. See if ZookaWare PC Cleaner can help with your registry by running a free scan.