Oracle8i interMedia Text Reference
Release 2 (8.1.6)

A77063-01

Library

Product

Contents

Index

Prev Up Next

Indexing, 11 of 11


System Parameters

General

When you install interMedia Text, in addition to the system-defined preferences, the following system parameters are set:

System Parameter  Description 

MAX_INDEX_MEMORY 

This is the maximum indexing memory which can be specified in the parameter string of CREATE INDEX and ALTER INDEX. 

DEFAULT_INDEX_MEMORY 

This is the default indexing memory used with CREATE INDEX and ALTER INDEX. 

LOG_DIRECTORY 

This is the directory for CTX_OUTPUT log files. 

CTX_DOC_KEY_TYPE 

The default input key type, either ROWID or PRIMARY_KEY, for the CTX_DOC procedures. Set to ROWID at install time.

See also CTX_DOC. SET_KEY_TYPE

You can view system defaults with CTX_PARAMETERS view. You can change defaults using the CTX_ADM.SET_PARAMETER procedure.

Default Index Parameters

The following default parameters are used when you do not specify preferences in the parameter string of CREATE INDEX. Each default parameter names a system-defined preference to use for data storage, filtering, lexing and so on.

System Parameter  Used When  Default Value 

DEFAULT_DATASTORE 

No datastore preference specified in parameter string of CREATE INDEX. 

CTXSYS.DEFAULT_DATASTORE 

DEFAULT_FILTER_FILE 

No filter preference specified in parameter string of CREATE INDEX, and either of the following conditions is true:

  • your files are stored in external files (BFILES) or

  • you specify a datastore preference that uses FILE_DATASTORE

 

CTXSYS.INSO_FILTER 

DEFAULT_FILTER_BINARY 

No filter preference specified in parameter string of CREATE INDEX, and Oracle detects that the text column datatype is RAW, LONG RAW, or BLOB. 

CTXSYS.INSO_FILTER 

DEFAULT_FILTER_TEXT 

No filter preference specified in parameter string of CREATE INDEX, and Oracle detects that the text column datatype is either LONG, VARCHAR2, VARCHAR, CHAR, or CLOB. 

CTXSYS.NULL_FILTER 

DEFAULT_SECTION_HTML 

No section group specified in parameter string of CREATE INDEX, and when either of the following conditions is true:

  • your datastore preference uses URL_DATASTORE or

  • when your filter preference uses INSO_FILTER.

 

CTXSYS.HTML_SECTION_GROUP 

DEFAULT_SECTION_TEXT 

No section group specified in parameter string of CREATE INDEX, and when you do not use either URL_DATASTORE or INSO_FILTER. 

CTXSYS.NULL_SECTION_GROUP 

DEFAULT_STORAGE 

No storage preference specified in parameter string of CREATE INDEX. 

CTXSYS.DEFAULT_STORAGE 

DEFAULT_LEXER 

No lexer preference specified in parameter string of CREATE INDEX. 

CTXSYS.DEFAULT_LEXER 

DEFAULT_STOPLIST 

No stoplist specified in parameter string of CREATE INDEX. 

CTXSYS.DEFAULT_STOPLIST 

DEFAULT_WORDLIST 

No wordlist preference specified in parameter string of CREATE INDEX. 

CTXSYS.DEFAULT_WORDLIST 

Viewing Default Values

You can view system defaults with CTX_PARAMETERS view.

Changing Default Values

You can change a default value using the CTX_ADM.SET_PARAMETER procedure to name another preference, custom or system-defined, to use as default.


Prev Up Next
Oracle
Copyright © 1999 Oracle Corporation.

All Rights Reserved.

Library

Product

Contents

Index