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Under Visual COBOL, the tool named FaultFinder appears to be absent.
The FaultFinder tool, which had been available in the Server Express and Net Express products, has been removed from the Visual COBOL and Server for COBOL products on both Windows and Linux/UNIX. Here is a documentation link mentioning this:
The main alternative diagnostic tool in place of FaultFinder is the Consolidated Tracing Facility:
For Native COBOL applications, another alternative is Debugging Using a Core Dump. This is similar to FaultFinder, because it allows the state of an application to be saved to disk in a core dump file when the application crashes. You can then use the dump file to help debug problems, as it indicates where in the source code the error occurred, along with the values of variables, expressions, and the contents of memory as they were at the moment the error occurred:
Another alternative for Native COBOL applications is Just-In-Time Debugging, which allows a debugger to be connected to a running application at the moment an error occurs:
If the application is running on a production machine separate from the workstation on which a developer is running the Visual Studio for Visual COBOL IDE, the application can be debugged using Remote Debugging, as described here:
For applications and services running under Enterprise Server, a person can take these debugging approaches: