|Oracle® Text Reference
11g Release 1 (11.1)
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This section describes new features of Oracle Database 11g Release 1 (11.1) edition of Oracle Text and provides pointers to additional information. Information about new features from previous releases is also retained to help you migrate to the current release.
The following sections describe the new features in Oracle Text:
Support for many new formats has been added. This is due to the migration to Oracle Outside in HTML Export filtering technology.
Oracle Text's output HTML has a new look and feel. This is due to the migration to Oracle Outside in HTML Export filtering technology.
USER_FILTER is now sensitive to
CHARSET columns for better indexing performance.
On Windows systems, the executable that you specify for the
command attribute must now exist in the
%ORACLE_HOME%/ctx/bin directory instead of
Zero downtime for applications with new incremental indexing and online index creation.
See Also:"Creating a CONTEXT Index Incrementally with POPULATE_PENDING" in Oracle Text Application Developer's Guide
New features for recreating an index online and finer control for maintenance processes.
See Also:"Recreating an Index" in Oracle Text Application Developer's Guide
New Oracle Text Manager in Oracle Enterprise Manager with which you can:
Monitor health of Text indexes.
Modify index settings.
Generate index-level statistics about disk space, fragmentation, garbage, frequency of words, and more.
Synchronize, optimize, and rebuild indexes.
Diagnose problems, and resume failed operations.
See Also:"Text Manager in Oracle Enterprise Manager" in Oracle Text Application Developer's Guide
New support for Composite Domain Index for
CONTEXT indextype for improved mixed query performance.
See Also:"Composite Domain Index (CDI) in Oracle Text" in Oracle Text Application Developer's Guide
Improved query performance and scalability.
See Also:"Parallelizing Queries Across Oracle RAC Nodes" in Oracle Text Application Developer's Guide
SDATA section type and
SDATA operator that enables range searches on metadata.
See Also:"SDATA Section" in Oracle Text Application Developer's Guide
New user-defined scoring feature,
AUTO_LEXER lexer type that performs language identification, word segmentation, document analysis, part-of-speech tagging, and stemming. The
AUTO_LEXER also enables customization of these components.
New values for
INDEX_STEMS attribute of
BASIC_LEXER to enable better query performance for stem ($) queries.
NOPOPULATE option for
INDEX to support incremental indexing.
See Also:"POPULATE | NOPOPULATE"
New limit for the number of partitions in Oracle Text is now the same as the maximum for Oracle Database.
See Also:"Partitioned Tables and Indexes" in Oracle Text Application Developer's Guide
New feature usage tracking.
See Also:"Database Feature Usage Tracking in Oracle Enterprise Manager" in Oracle Text Application Developer's Guide
With Oracle Text 10g Release 2, the
INSO_FILTER filter has been deprecated in favor of a new filter,
AUTO_FILTER is backward-compatible with
INSO_FORMATTING attributes of the
MAIL_FILTER have been deprecated in favor of
AUTO_FILTER_OUTPUT_FORMATTING, respectively. Moreover, the
INSOFILTER directive used in the mail configuration file of the
MAIL_FILTER has been deprecated in favor of the new
The system-defined preference
CTXSYS.INSO_FILTER has also been deprecated in favor of a new preference,
With these changes, the list of document formats supported by Oracle Text has changed.
See Also:Filter Types, Appendix B, "Oracle Text Supported Document Formats", and the Migration chapter of the Oracle Text Application Developer's Guide
Changes in Asian Language Support
Chinese, Japanese, and Korean now support the
CTXRULE index type. All three languages also support mixed-case query searches, as does the
KOREAN_LEXER has been deprecated. Use the
See Also:Lexer Types
New default stopwords have been provided for English, Finnish, Italian, Spanish, and Swedish.
Key Word in Context (KWIC)
Two new procedures,
CTX_DOC.POLICY_SNIPPET, return text fragments containing keywords found in documents. This format enables users to see the keywords in their surrounding text, providing context for them.
INDEX now has two new parameters.
ALTER INDEX PARAMETERS enables you to modify the parameters of a non-partitioned index or a local partitioned index (including all partitions) without rebuilding the index.
This command works at the index level.
ALTER INDEX MODIFY PARTITION PARAMETERS enables you to modify the metadata of an index partition.
See Also:ALTER INDEX
New Procedure for Handling Failed Index Creation
CTX_ADM.MARK_FAILED procedure enables you to change an index's status from
FAILED; such a change is useful when
INDEX fails and it is necessary to recover the index.