Updating index on oracle table


The CTXRULE index is an index created on a table of queries, where each query has a classification.Single documents (plain text, HTML, or XML) can be classified using the MATCHES operator.Suitable for querying small text fragments with structured criteria like dates, item names, and prices that are stored across columns.Ctxrule Index: Use a CTXRULE index to build a document classification application.Re-creating Oracle indexes based on an existing data source also removes intra-block fragmentation.In fact, compared to dropping the index and using the CREATE INDEX command, re-creating an existing index offers better performance.



Most Oracle databases have hundreds or even thousands of indexes.The DBA should be connected to the database as the user who created the index and query the view CTX_USER_INDEX_ERRORS.The DBA may also view errors on ALL indexes in the database by connecting as CTXSYS and querying the view CTX_INDEX_ERRORS: SELECT err_timestamp, err_text FROM ctx_user_index_errors ORDER BY err_timestamp DESC; DML indexing: DML operations to the base table refer to when documents are inserted, updated or deleted from the base table.With a context index, it is possible to customize the index in a variety of ways.



Updating index on oracle table comments


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