oracle sqlplus login.sql设置

sqlplus在启动时会自动运行两个脚本:glogin.sql、login.sql这两个文件

　执行顺序为

　　1.默认在在$ORACLE_HOME/sqlplus/admin路径下查找glogin.sql文件执行

　　2.默认在在当前路径下查找login.sql文件执行，若未查找到对应文件则执行3

　　3.判断是否设置SQLPATH环境变量，如果设置了该变量则在对应路径下查找并执行，未找到则停止查找

可以在login.sql文件中加入一些常用设置使用SQLPLUS时更便捷，以下试验在ORACLE 11.2.0.1.0上进行

默认$ORACLE_HOME/sqlplus/admin路径下存在glogin.sql文件

当前用户的profile文件中设置SQLPATH环境变量 export SQLPATH=$ORACLE_HOME/sqlplus/admin:$SQLPATH

在默认路径下加入我们自己的login.sql文件，以下配置为常用配置

--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 
--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

使用scott用户登录后如下

[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 00:00:00        800                    20
      7499 ALLEN      SALESMAN        7698 1981-02-20 00:00:00       1600        300         30
      7521 WARD       SALESMAN        7698 1981-02-22 00:00:00       1250        500         30
      7566 JONES      MANAGER         7839 1981-04-02 00:00:00       2975                    20
      7654 MARTIN     SALESMAN        7698 1981-09-28 00:00:00       1250       1400         30
      7698 BLAKE      MANAGER         7839 1981-05-01 00:00:00       2850                    30
      7782 CLARK      MANAGER         7839 1981-06-09 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 1987-04-19 00:00:00       3000                    20
      7839 KING       PRESIDENT            1981-11-17 00:00:00       5000                    10
      7844 TURNER     SALESMAN        7698 1981-09-08 00:00:00       1500          0         30
      7876 ADAMS      CLERK           7788 1987-05-23 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 1981-12-03 00:00:00        950                    30
      7902 FORD       ANALYST         7566 1981-12-03 00:00:00       3000                    20
      7934 MILLER     CLERK           7782 1982-01-23 00:00:00       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>

可以看到登录之后 SQLPLUS按照login.sql文件进行相应设置