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NLS_CHARACTERSET

This is the database character set.

The Oracle database uses this for data stored in CHAR datatypes (CHAR, VARCHAR2, CLOG, and LONG); identifiers such as table names, column names, and PL/SQL variable; and for entering and storing SQL and PL/ SQL program source.

  • This gets set during the Oracle installation.
  • This cannot be reset once the Oracle database has been created.