Calling an External Procedure

• In the External Address Space:

  • extproc is called either by /data_cartridge_dir/libdatastream.so or Listener

  • extproc calls to PL/SQL within the Oracle Address Space

• In the Oracle Address Space:

  • PL/SQL accesses Oracle Database through Oracle Server

  • PL/SQL calls to the Listener or /data_cartridge_dir/libdatastream.so within the External Address Space