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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Database Extensions User's GuideThe HCL OneDB™ Database Extensions User's Guide explains how to use the database extensions that come with HCL OneDB™: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, HCL OneDB™ web feature service for Geospatial Data, and SQL packages.
Basic Text SearchYou can perform basic text searching for words and phrases in a document repository stored in a column of a table.
Basic text search performanceThe performance of basic text search queries depends on the bts index, disk space, configuration parameters, and BTS virtual processors.
Disk space for the bts indexThe size of the external bts index depends on the number of documents being indexed as well as the number of words and the number of unique words in those documents.

Disk space for the bts index

The size of the external bts index depends on the number of documents being indexed as well as the number of words and the number of unique words in those documents.

If you receive an I/O error such as (BTSA1) - bts clucene error: IO error: File IO Write error, check the online log. The probable cause is insufficient disk space. If this happens, drop the bts index with a DROP INDEX statement and recreate it on a disk with enough disk space.

To prevent running out of space for the bts index, create a dedicated sbspace for the bts index and a separate sbspace for temporary data. A separate sbspace for temporary data might also improve the speed of creating and updating the bts index.

See Preparing for basic text searching for the procedure to create a bts index. See the HCL OneDB™ Guide to SQL: Syntax for instructions for the DROP INDEX statement.