1、查看glogin.sql內容

<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/sqlplus/admin>$more glogin.sql
--
-- Copyright (c) 1988, 2011, Oracle and/or its affiliates. 
-- All rights reserved. 
--
-- NAME       ##文件名
--   glogin.sql
--
-- DESCRIPTION    ##描述
--   SQL*Plus global login "site profile" file
--
--   Add any SQL*Plus commands here that are to be executed when a
--   user starts SQL*Plus, or uses the SQL*Plus CONNECT command.
--
-- USAGE   ##用法
--   This script is automatically run
--
 

實際上就是登陸數據庫可以自動執行的一個腳本，簡單可以這樣理解。

2、添加內容
以下內容是我們可以添加的，我們根據我們的需要添加。

SQL> define
DEFINE _DATE           = "13-FEB-2018 21:05:01" (CHAR)
DEFINE _CONNECT_IDENTIFIER = "orcl" (CHAR)
DEFINE _USER           = "SYS" (CHAR)
DEFINE _PRIVILEGE      = "AS SYSDBA" (CHAR)
DEFINE _SQLPLUS_RELEASE = "1102000400" (CHAR)
DEFINE _EDITOR         = "ed" (CHAR)
DEFINE _O_VERSION      = "Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options" (CHAR)
DEFINE _O_RELEASE      = "1102000400" (CHAR)
SQL>                  
 

這裏我添加幾個常用的，也是我在生產環境上添加的。

set linesize 200 pagesize 50
set sqlprompt "_user‘@‘_connect_identifier> "
define_editor=vi

添加的文件內容

<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/sqlplus/admin>$vi glogin.sql 
--
-- Copyright (c) 1988, 2011, Oracle and/or its affiliates. 
-- All rights reserved. 
--
-- NAME
--   glogin.sql
--
-- DESCRIPTION
--   SQL*Plus global login "site profile" file
--
--   Add any SQL*Plus commands here that are to be executed when a
--   user starts SQL*Plus, or uses the SQL*Plus CONNECT command.
--
-- USAGE
--   This script is automatically run
--
set linesize 132 pagesize 50
set sqlprompt "_user‘@‘_connect_identifier> "
define_editor=vi
 

3、大家看一下結果：

<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/sqlplus/admin>$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Feb 13 21:13:40 2018

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SYS@orcl> 

小結：
當我們管理多套數據庫的時候，可能同時登陸到幾套數據庫，為了防止出現操作失誤的情況，建議大家配置一下glogin.sql，可以時刻提示我們在那套數據庫上進行操作，對數據庫的操作多謹慎都不為過。

做一名精致的DBA之glogin.sql