Oracle7 Server Application Developer's Guide
CHAPTER 8. PL/SQL Input/Output
This chapter describes how to use Oracle-supplied packages that allow PL/SQL to communicate with external processes, sessions, and files.
The packages are
- DBMS_PIPE, to send and receive information between sessions, asynchronously.
- DBMS_OUTPUT, to send messages from a PL/SQL program to other PL/SQL programs in the same session, or to a display window running SQL*Plus.
- UTL_FILE, which allows a PL/SQL program to read information from a disk file, and write information to a file.