Suppress Duplicate Messages

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Mailbox can suppress duplicate messages, providing a model similar to traditional file systems.

About this task

In this mode, when a message is added to a mailbox, the system determines whether a message with that same name is already present in the mailbox. If so, then the old message is deleted before the new one is added. The document associated with the old message is of course not deleted—only the message referencing the document (content) is deleted. The document is still retrievable through correlation search and archival search.

To suppress duplicate messages:

Procedure

  1. Go to the installation folder > properties folder > mailbox.properties.in file.
  2. Change the entry, disallowDuplicateMessages=false (default) to disallowDuplicateMessages=true.
  3. Run setupfiles.sh / .cmd.
  4. Restart Application for changes to the mailbox.properties.in file to take effect.
    Note: Message names are limited to 100 characters for DB2 on z/OS. All other platforms support 255 character message names.