Oracle SqlPlus设置Login.sql的技巧

--SQLPLUS默认编辑器设置为vi

define _editor=vi

--默认打开DBMA_OUTPUT,这样不必要每次在输入这个命令，同时将默认缓冲池设置得尽可能大

set serveroutput on size 1000000

--假脱机输出文本时，会去除文本行两端的空格，而且行宽不定，如果设置为off（默认设置），假脱机输出的文本行宽度则等于所设置的linesize

set trimspool on

--设置选择LONG和CLOB列时显示的默认字节数

set long 5000

--设置显示的文本宽为200个字符

set linesize 200

--设置SQLPLUS多久打印一次标题，将此参数设置大些这样每页只显示一次标题

set pagesize 9999

--设置AUTOTRACE得到解释计划输出的默认宽度，一般80足够放下整个计划

column plan_plus_exp format a80

--设置SQLPLUS提示符，显示格式为用户@数据库名

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

[oracle@RHEL65 ~]$ sqlplus scott/oracle

SQL*Plus: Release 11.2.0.1.0 Production on Sat Jan 23 00:11:26 2016

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected to :

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

scott@ORCL> select * from emp;

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO

---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------

7369 SMITH CLERK 7902 1980-12-17 0 800 20

7499 ALLEN SALESMAN 7698 1981-02-20 0 1600 300 30

7521 WARD SALESMAN 7698 1981-02-22 0 1250 500 30

7566 JONES MANAGER 7839 1981-04-02 0 2975 20

7654 MARTIN SALESMAN 7698 1981-09-28 0 1250 1400 30

7698 BLAKE MANAGER 7839 1981-05-01 0 2850 30

7782 CLARK MANAGER 7839 1981-06-09 0 2450 10

7788 SCOTT ANALYST 7566 1987-04-19 0 3000 20

7839 KING PRESIDENT 1981-11-17 0 5000 10

7844 TURNER SALESMAN 7698 1981-09-08 0 1500 0 30

7876 ADAMS CLERK 7788 1987-05-23 0 1100 20

7900 JAMES CLERK 7698 1981-12-03 0 950 30

7902 FORD ANALYST 7566 1981-12-03 0 3000 20

7934 MILLER CLERK 7782 1982-01-23 0 1300 10

14 rows selected.

scott@ORCL> set autot trace exp stat;

scott@ORCL> select * from emp;

14 rows selected.

Execution Plan

----------------------------------------------------------

Plan hash value: 3956160932

--------------------------------------------------------------------------

| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |

--------------------------------------------------------------------------

| 0 | SELECT STATEMENT | | 14 | 532 | 3 (0)| 00:00:01 |

| 1 | TABLE ACCESS FULL | EMP | 14 | 532 | 3 (0)| 00:00:01 |

--------------------------------------------------------------------------

Statistics

----------------------------------------------------------

0 recursive calls

0 db block gets

8 consistent gets

0 physical reads

0 redo size

1630 bytes sent via SQL*Net to client

524 bytes received via SQL*Net from client

2 SQL*Net roundtrips to / from client

0 sorts (memory)

0 sorts (disk)

14 rows processed

scott@ORCL>