SQL*Plus User's Guide and Reference - InfoLab

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Changes to SET SERVEROUTPUT ON
Changes to the way output from nested PL/SQL functions is displayed may change
the appearance of output with SET SERVEROUTPUT ON. SET SERVEROUTPUT
ON now correctly shows output (DBMS_OUTPUT.PUT_LINE) from a PL/SQL
function nested inside a SQL statement. Previously, output from a nested PL/SQL
function did not display until a subsequent PL/SQL function was executed.
See Also: "SET" on page 13-103
SHOW RECYCLEBIN
A new option RECYCLEBIN original_name has been added to the SHOW command.
It enables users to view tables that are available for purging or reverting using the
new PURGE and FLASHBACK BEFORE DROP commands.
See Also: "SHOW" on page 13-136
SET PROMPT Support for Substitution Variables
You can now use substitution variables in the SQL*Plus command-line prompt to
display, for example, the database and server you are connected to, or other
information available through a substitution variable you choose. This is similar to
the substitution variable usage in TTITLE.
See Also: "SET SQLP[ROMPT] {SQL> | text}" on page 13-132.
Predefined Variables: _DATE, _PRIVILEGE, _USER
There are three new predefined variables:
� _DATE contains the current date or a user defined fixed string.
� _PRIVILEGE contains the privilege level of the current connect. This will be
either AS SYSDBA, AS SYSOPER or blank to indicate a normal connection.
� _USER contains the username as supplied by the user to make the current
connection. This is the same as the output from the SHOW USER command.
These variables can be accessed like any other substitution variable. For example,
they could be used in TTITLE, in '&' substitution variables, or as your SQL*Plus
command-line prompt by using the SET SQLPROMPT command. For example, to
make your prompt always show your username (_USER), the @ symbol, and then
your connection identifier (_CONNECT_IDENTIFIER) during your session, enter:
SET SQLPROMPT "_USER'@'_CONNECT_IDENTIFIER > "