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Purpose
According to the Oracle Text Reference online doc the CTX_ANL PL/SQL package is used with AUTO_LEXER and provides procedures for adding and dropping a custom dictionary from the lexer.
A custom dictionary might be one that you develop for a special field of study or for your industry. In most cases, the dictionaries supplied with Oracle Text are more than sufficient to handle your requirements.
AUTHID
CURRENT_USER
Dependencies
CTX_DDL
DRUE
DRVUTL
DRIUTL
DRVLSB
DR_DEF
Documented
Yes
First Available
Not known
Security Model
Owned by CTXSYS with EXECUTE granted to the CTXAPP role.