What is Eclipse's Clean Mode and What are its Effects?

Unveiling the Clean Mode: Its Impact and Usage in Eclipse

Eclipse, a versatile IDE, sometimes encounters minor glitches or plugin inconsistencies. In these scenarios, users often recommend running Eclipse in clean mode. But what exactly does that entail and what consequences does it have?

What is Clean Mode?

When Eclipse runs in clean mode, the OSGi framework and runtime caches are purged, including data related to bundle dependency resolutions and Eclipse extension registry. Effectively, Eclipse is forced to refresh these caches.

How to Access Clean Mode

There are three primary methods to invoke Eclipse in clean mode:

1. Edit Eclipse.ini File: Open the eclipse.ini file in the Eclipse install directory and insert "-clean" as the opening line.
2. Modify Shortcut: Add "-clean" as the initial argument to the Eclipse shortcut you utilize for launching.
3. Create Batch/Shell Script: Generate a script that executes the Eclipse executable with the "-clean" argument. This allows you to reuse the script for future clean operations.

Consequences of Clean Mode

Running Eclipse in clean mode can resolve certain issues, such as uncooperative plugins or unexpected behavior. However, it's crucial to note that it also has the following consequences:

• Configuration cache gets cleared, meaning the workspace you have open when entering clean mode is not recognized.
• Debug mode settings and other workspace-related preferences are reset.

Therefore, before using clean mode, ensure you have closed any necessary windows or made backups of critical configurations. For a comprehensive list of command-line options available in Eclipse, refer to https://help.eclipse.org/indigo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html.

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