[Pl/sql QUE -- on the role of system variables! ! In pl/sql, some of the system variables to control output file format, as follows : [code] 400 SET LINES SET PAGES 0 ALTER SESSION SET NLS_DATE_FORMAT = 'YYYYMMDDHH24MISS'; OFF SET TRIMSPOOL HEADING OFF SET OFF SET FEEDBACK OFF SET VERIFY SERVEROUTPUT ON SET TERMOUT ON SET [/code] Please help me explain in detail the role of variables that are not listed above, I still have some way to go, pagesize, linesize, etc., and other factors help explain its role? Only used three : HEADING OFF/ON : control the outcome of the inquiry whether the name field FEEDBACK : OFF/ON control whether the findings show that the implementation language SERVEROUTPUT OFF/ON : whether the findings show that the output control DBMS_OUTPUT package [ Closed window ]