Syntax options:

       EXTERNAL_GLOBALS
       NOEXTERNAL_GLOBALS

    Specifies whether or not alias references are coerced into alias
    definitions. An alias definition is an alias declared with the
    GLOBAL keyword (the default) in the DECLARE ALIAS statement. An
    alias reference is an alias declared with the EXTERNAL keyword in
    the DECLARE ALIAS statement.

    The EXTERNAL_GLOBALS qualifier treats alias references as alias
    definitions. This qualifier provides compatibility with versions
    prior to V7.0.

    The NOEXTERNAL_GLOBALS qualifier treats alias references as alias
    references. The NOEXTERNAL_GLOBALS qualifier may be useful on
    OpenVMS if your application shares an alias between multiple
    shareable images.

    The default setting is EXTERNAL_GLOBALS.

    For information on using aliases and shareable images, see the
    Oracle Rdb Guide to SQL Programming.