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IBM Z® Open Debug

IBM Z Open Debug is an extension for Visual Studio Code that provides interactive debugging support for debugging z/OS COBOL, PL/I and High Level Assembler applications in VS Code, in conjunction with IBM z/OS Debugger.

Table of contents

Prerequisites

Review the IBM Z Open Debug License Agreement, terms and conditions for separately licensed code, and Third Party Notices before downloading.

  • Client
  • Host
    • IBM z/OS Debugger Remote Debug Service: for interactively debugging compiled applications running on z/OS
    • IBM z/OS Debugger Debug Profile Service: for creating debug profiles which can be used to trigger IBM z/OS Debugger in Batch, TSO, CICS and IMS environments

Migrating to IBM Z Open Debug v4 from earlier versions

IBM Z Open Debug v4 uses Zowe connection profiles to define connections to z/OS machines, replacing the connection details that were previously defined in the VS Code Settings. Existing connection details defined in the VS Code Settings can be automatically migrated to a new Zowe team configuration, or added to an existing Zowe team configuration.

IBM Z Open Debug v4 uses a different internal format for storing debug profiles. Debug profiles in older formats can be automatically migrated.

The separate IBM Z Open Debug Profiles view extension has been deprecated. All functionality related to debug profiles is now contained in the IBM Z Open Debug extension, and the IBM Z Open Debug Profiles view extension can be automatically uninstalled.

A prompt will be displayed for each migration step. If desired, old artifacts may be retained after migration to allow continued backwards compatibility with older versions of IBM Z Open Debug.

Configuring host connection

IBM Z Open Debug defines connections to remote z/OS hosts using Zowe connection profiles. A minimal Zowe team configuration file for Z Open Debug might look like:

{
    "$schema": "./zowe.schema.json",
    "profiles": {
        "zOpenDebug": {
            "type": "zOpenDebug",
            "properties": {
                "host": "yourZhost.yourCompany.com",
                "dpsPort": 8143,
                "dpsContextRoot": "api/v1",
                "dpsSecured": true,
                "rdsPort": 8002,
                "rdsSecured": true,
            },
            "secure": [
                "user",
                "password"
            ]
        }
    },
    "defaults": {
        "zOpenDebug": "zOpenDebug",
    },
    "autoStore": true
}

Debug profiles

IBM Z Open Debug provides a user interface in Visual Studio Code for creating and managing debug profiles, which can be used to dynamically trigger IBM z/OS Debugger on z/OS applications. Debug profiles can be created and managed through the z/OS Debugger Profiles view (View > Open View... > z/OS Debugger Profiles)

Launching and debugging applications

IBM Z Open Debug provides several launch.json configuration types for working with z/OS Debugger sessions on a remote z/OS host. Launch configurations can be created and triggered through the Run and Debug view in order to:

  • Launch a z/OS application via a client-side command line, and then automatically connect to it once it is parked on the z/OS host. Use a launch config that specifies an applicationLaunch: commandLine attribute.
{
    "type": "zOpenDebug",
    "request": "launch",
    "name": "Launch and debug application",
    "connection": {
        "type": "zowe",
        "name": "myZoweConnection",
    },
    "applicationLaunch": {
        "commandLine": "zowe rse submit data-set \"MYUSER.SAMPLE.JCL(MYDBG)\""
    }
}
  • List available parked z/OS Debugger debug sessions on a z/OS host (and optionally click to connect to one of them). Use an attach config.
{
    "type": "zOpenDebug",
    "request": "attach",
    "name": "List and click to connect to available parked debug sessions",
    "connection": {
        "type": "zowe",
        "name": "myZoweConnection",
    }
}
  • Connect to an available parked z/OS Debugger debug session on a z/OS host. Use a launch config.
{
    "type": "zOpenDebug",
    "request": "launch",
    "name": "Connect to a parked debug session",
    "connection": {
        "type": "zowe",
        "name": "myZoweConnection",
    }
}

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