Oracle数据库备份与恢复之日志备份

2/9/2008来源:Oracle教程人气:4570


  以前大家了解了Oracle数据库的在线备份,另外,进行数据库全备份后需要备份归档的日志文件。     1. 建立数据库备份的脚本     在上面建立的目录下建立如下的两个脚本。     1.1 建立执行备份任务的脚本(批处理文件)     文件内容如下:     @echo OFF
    Rem ====================================
    Rem  NAME     - archive_backup_Run.bat
    Rem  FUNCTION - Creates a backup script for a User Managed backup
    Rem  NOTES    - This script will create a script and run OS copy commands
    Rem             on closed (cold) database
    Rem  MODIFIED - ksmith    01/01/02   Original File
    Rem ===============================     Rem  For Windows, set environment variables for the root path.
    set ORACLE_SID=TSTDB
    set ORACLE_CONNECTSTRING=tstdb
    set ORACLE_BASE=c:\oracle
    set ORACLE_HOME=%ORACLE_BASE%\ora92
    set ORACLE_DATA=%ORACLE_BASE%\oradata\%ORACLE_SID%
    set ORACLE_ADMIN=%ORACLE_BASE%\admin\%ORACLE_SID%     %ORACLE_HOME%\bin\sqlplus /nolog @archive_backup.sql > archive_backup.log     1.2 建立完成备份认为的命令文件(sqlplus内执行的sql脚本)     文件内容如下:     Rem ===============================
    Rem  NAME     - archive_backup.sql
    Rem  FUNCTION - Creates a backup command file for a User Managed Archive Log backup
    Rem  NOTES    - This script will create a script and run OS copy commands
    Rem             on an open or closed database.
    Rem  MODIFIED - Mr. Tianliang Guo 2002/08/19
    Rem ==========================================     Rem Set SQL*Plus variables to manipulate output
    set feedback off
    set pagesize 0
    set heading off
    set verify off
    set linesize 150
    set trimspool on     Rem Set SQL*Plus user variables used in script
    define adm = 'sys'
    define pwd = 'oracle9i'     Rem  for Windows
    define dir = 'C:\oracle\admin\TSTDB\backup\archive log'
    define fil = 'archive_backup_commands.sql'
    define spo = 'archive_backup_output.lst'
    define cpy = 'copy'
    Rem login database
    connect &adm/&pwd as sysdba;     Rem Create a file containing all the file copy commands needed for open physical backup
    spool &
    PRompt spool &;
    prompt alter system archive log all;;     SELECT 'host &cpy 'name' &dir'
        FROM v$archived_log
        WHERE completion_time >= trunc(sysdate)-1
              AND completion_time < trunc(sysdate);     prompt spool off;;
    spool off;     Rem Run the copy file commands from the Operating system
    rem @&
    exit;     2. 修改教本定义的变量
   
    在运行教本中定义的一些变量,将其改为本地数据库安装环境的变量。
   
    需要修改的变量有,
   
    在close_Backup_run.bat脚本中:
      set ORACLE_SID=TSTDB
      set ORACLE_CONNECTSTRING=tstdb
      set ORACLE_BASE=c:\oracle
      set ORACLE_HOME=%ORACLE_BASE%\ora81
     
    在close_backup.sql脚本中:
      define adm = 'sys'
      define pwd = 'oracle8i'
      define dir = 'C:\oracle\admin\TSTDB\backup'
      define ctl = '&dir\control.ctl'     3. 执行数据库备份任务     在$ORACLE_BASE\admin\admin_script目录下运行open_Backup_run.bat     4. 执行自动备份     在windows系统中添加计划任务,定期运行open_Backup_run.bat