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External Program Executing in Separate Address Space

In the External Address Space:

extproc is called either by /sh_libs/extlib.so or by Listener

extproc is called either by /sh_libs/extlib.so or by Listener

extproc calls to the Inter-Language Method Service within the Oracle Address Space

In the Oracle Address Space:

Inter-Language Method Service accesses Oracle Database through Oracle Server

Inter-Language Method Service calls to the Listener or extproc within the External Address Space