Oracle定时清理归档日志

Hello World呀2025-07-23 22:59

线上归档日志满了，系统直接崩了，为解决这个问题，创建每月定时清理归档日志。

创建文件名 delete_archivelog.rman

sql 复制代码

CONFIGURE ARCHIVELOG DELETION POLICY CLEAR;
RUN {
  ALLOCATE CHANNEL c1 TYPE DISK;
  DELETE ARCHIVELOG ALL COMPLETED BEFORE 'SYSDATE - 7';
  RELEASE CHANNEL c1;
}

创建文件名 archive_cleanup.bat

sql 复制代码

@echo off
:: 设置 Oracle 实例的环境变量
set ORACLE_SID=EMR
set ORACLE_HOME=D:\app\Administrator\product\11.2.0\dbhome_1
set PATH=%ORACLE_HOME%\bin;%PATH%

:: 设置日志文件路径（可选，用于记录日志）
set LOGFILE=%~dp0%archive_cleanup.log

echo [%date% %time%] 开始删除7天前的归档日志... >> "%LOGFILE%"

:: 调用 RMAN 并执行脚本文件
"%ORACLE_HOME%\bin\rman" target / @delete_archivelog.rman >> "%LOGFILE%" 2>&1

if %errorlevel% == 0 (
  echo [%date% %time%] 归档日志清理完成，未发现错误。 >> "%LOGFILE%"
) else (
  echo [%date% %time%] 警告：归档日志清理过程中发生错误，错误代码：%errorlevel% >> "%LOGFILE%"
)

echo 清理完成，请查看日志文件：%LOGFILE%
pause

查询归档日志，是否删除。

sql 复制代码

SELECT 
  SEQUENCE#, 
  FIRST_TIME, 
  NEXT_TIME, 
  BLOCKS * BLOCK_SIZE AS BYTES, 
  DELETED
FROM 
  V$ARCHIVED_LOG 
WHERE 
  FIRST_TIME < SYSDATE  -- 这里以7天前为例子
ORDER BY 
  SEQUENCE# DESC;

SELECT TRUNC(SUM(blocks * block_size) / 1024 / 1024) AS "Archived Log Size (MB)"
  FROM v$archived_log
 WHERE deleted = 'NO';

win任务为例每月1号触发脚本