Distributed Index Handler 25.4
Distributed Index Handler Help

# Introduction to Index Actions

Index actions allow you to index content into Distributed Index Handler, and to administer the Data index.

NOTE: Index actions are case sensitive. All index actions must be sent to the Distributed Index Handler DIHPort.

You can control the users that can send index actions by configuring authorization roles. See Authorization Roles Configuration Parameters.

The following index actions are available:

DREADD | Indexes content that is located on the same machine as the Distributed Index Handler.
DREADDDATA | Indexes content that is not located on the same machine as the Distributed Index Handler.
DREBACKUP | Backs up the data index.
DRECHANGEMETA | Changes document metadata fields.
DRECOMPACT | Compacts the data index.
DRECREATEDBASE | Creates a database.
DREDBSETOPTIONS | Updates the configuration for a database.
DREDELDBASE | Deletes all documents from a database.
DREDELETEDOC | Deletes documents by ID.
DREDELETEREF | Deletes documents by reference.
DREDUPLICATE | Removes or tags duplicates in the data index.
DREEXPIRE | Expires documents from the data index.
DREEXPORTIDX | Exports IDX files from the data index.
DREEXPORTREMOTE | Exports XML files from one data index and indexes them into another.
DREEXPORTXML | Exports XML files from the data index.
DREFLUSHANDPAUSE | Prepares the Content component for a snapshot (hot backup).
DREINITIAL | Resets the data index.
DREMODIFYTERMWEIGHT | Adds a custom file to define the weights for terms in your index.
DREQUERYSUMMARYMANAGEMENT | Updates the query summary stop phrase list or white list.
DREREDISTRIBUTE | Redistributes content when you update the child server architecture.
DREREGENERATE | Regenerates one or more data indexes.
DREREMOVEDBASE | Deletes a database.
DRERENAMEDBASE | Renames a database.
DREREPLACE | Changes document field values or deletes fields.
DRERESET | Forces the Content component to read the configuration file.
DRERESIZEINDEXCACHE | Dynamically resizes the index cache.
DRESPELLCHECKCACHE | Controls the spell check correction cache.
DRESYNC | Flushes the index cache to disk.
DRETAGDOCCLUSTERS | Allows you to tag documents that are conceptually similar.
DREUNDELETEDOC | Restores deleted documents.
DREVALIDATE | Validates specified Content sub-indexes.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Distributed Index Handler 25.4

Topic Title: Introduction to Index Actions