ORACLE SQL*PLUS環境變量設置及說明

1：查看當前用戶的環境設置：

SQL> define
DEFINE _DATE           = "21-JAN-14" (CHAR)
DEFINE _CONNECT_IDENTIFIER = "updb" (CHAR)
DEFINE _USER           = "SCOTT" (CHAR)
DEFINE _PRIVILEGE      = "" (CHAR)
DEFINE _SQLPLUS_RELEASE = "1102000300" (CHAR)
DEFINE _EDITOR           = "ed" (CHAR)
DEFINE _O_VERSION      = "Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options" (CHAR)
DEFINE _O_RELEASE      = "1102000300" (CHAR)
SQL> 

2：當前用戶設置環境： 

SQL> define_editor = 'VI';
SQL> define
DEFINE _DATE           = "21-JAN-14" (CHAR)
DEFINE _CONNECT_IDENTIFIER = "updb" (CHAR)
DEFINE _USER           = "SCOTT" (CHAR)
DEFINE _PRIVILEGE      = "" (CHAR)
DEFINE _SQLPLUS_RELEASE = "1102000300" (CHAR)
DEFINE _EDITOR           = "VI" (CHAR)
DEFINE _O_VERSION      = "Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options" (CHAR)
DEFINE _O_RELEASE      = "1102000300" (CHAR)
SQL> 

3：編輯login.sql　

　當退出當前用戶的時候，所設置的環境就自動恢復成默認值，可以在login.sql文件中做設置，就不用每次都手動修改：

   

[oracle@steven ~]$ cat login.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

 

4：對login.sql腳本進行說明 

 define_editor=vi：設置SQL*Plus 使用的默認編輯器。可以把它設置為你中意的文本編輯器。
 set serveroutput on size unlimited：默認的打開DBMA_OUTPUT，設置緩沖區的大寫盡可能大。
 set trimspool on：假脫機輸出文件時，會去除問本行兩端的空格，而且行寬不定，如果設置為OFF，假脫機輸出文件寬度則等於所設置的linesize。
 set long 5000：設置選擇LONG和CLUB列時顯示的默認字節數。
 set linesize 100：設置SQL*Plus顯示的文本行寬為100個字符。
 set pagesize 9999：pagesize可以控制SQL*Plus多久打印一次標題。
 column paln_plus_exp format a80：設置由AUTOTRACE得到的解釋計划輸出的默認寬度。a80通常足以放下整個計划。

    

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> '：這部分用於簡歷SQL*Plus的提示符，告訴SQL*Plus取得global_name列中的最后一個值，並將這個值賦給變量gname.