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.

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.