SQL>
SQL> select text
2 from all_source
3 where name = 'DBMS_OUTPUT'
4 and type = 'PACKAGE'
5 and line < 26
6 order by line
7 /
TEXT
----------------------------------------------------------------------------------------------------
package dbms_output as
-- DE-HEAD <- tell SED where to cut when generating fixed package
------------
-- OVERVIEW
--
-- These procedures accumulate information in a buffer (via "put" and
-- "put_line") so that it can be retrieved out later (via "get_line" or
-- "get_lines"). If this package is disabled then all
-- calls to this package are simply ignored. This way, these routines
TEXT
----------------------------------------------------------------------------------------------------
-- are only active when the client is one that is able to deal with the
-- information. This is good for debugging, or SP's that want to want
-- to display messages or reports to sql*dba or plus (like 'describing
-- procedures', etc.). The default buffer size is 20000 bytes. The
-- minimum is 2000 and the maximum is 1,000,000.
-----------
-- EXAMPLE
--
-- A trigger might want to print out some debugging information. To do
-- do this the trigger would do
TEXT
----------------------------------------------------------------------------------------------------
-- dbms_output.put_line('I got here:'||:new.col||' is the new value');
-- If the client had enabled the dbms_output package then this put_line
-- would be buffered and the client could, after executing the statement
25 rows selected.