vi $ORACLE_HOME/sqlplus/admin/glogin.sql

define _editor=vi

set serveroutput on size 1000000

set trimspool on

set long 5000

set linesize 100

set pagesize 9999

column plan_plus_exp format a80

column global_name new_value gname

set termout off

define gname=idle

column global_name new_value gname

select lower(user) || '@' || substr( global_name, 1, decode( dot, 0, length(global_name),dot-1) ) global_name

from (select global_name, instr(global_name,'.') dot from global_name );

set sqlprompt '&gname> '

set termout on

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巧妙设置sqlplus工具环境，工作更安全