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Oracle: DBMS_PIPE

dbms_pipe allows two or more sessions to communicate with each other.
dbms_pipe.purge
Most simple example: send and receive
Read and write with Perl
dbms_pipe.unique_session_name generates and returns a unique pipe name.

See also

dbms_output
The RMAN client ($ORACLE_HOME/bin/rman) can be controlled with a pipe interface.
Do not confuse dbms_pipe with the pipe row statement in pipelined functions.
Oracle DBMS PL/SQL packages
Reading from a pipe with the tq84-OCI (Oracle Call Interface) C library.

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