Oracle Character Set Functions

Character set functions return information about character sets. This page summarizes the character set functions in Oracle.

  1. NLS_CHARSET_DECL_LEN

    Oracle NLS_CHARSET_DECL_LEN() is a built-in function that returns the declaration length in characters of an NCHAR column.

  2. NLS_CHARSET_ID

    Oracle NLS_CHARSET_ID() is a built-in function that returns the ID corresponding to the given character set name.

  3. NLS_CHARSET_NAME

    Oracle NLS_CHARSET_NAME() is a built-in function that returns the character set name corresponding to the given character set ID.