归档—监控ORACLE数据库告警日志
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ORACLE的告警日志里面包含许多有用的信息，尤其是一些ORACLE的ORA错误信息，所以有必要及时归档、监控数据库告警日志的ORA错误，及时提醒数据库管理员DBA处理这些错误信息，那么我们首先来看看告警日志的内容片断：
Thread 1 advanced to log sequence 37749 (LGWR switch)
Current log# 6 seq# 37749 mem# 0: /u01/oradata/SCM2/redo06.log
Thu Jun 27 15:02:30 2013
Thread 1 advanced to log sequence 37750 (LGWR switch)
Current log# 2 seq# 37750 mem# 0: /u01/oradata/SCM2/redo02.log
Thu Jun 27 15:13:43 2013
Thread 1 advanced to log sequence 37751 (LGWR switch)
Current log# 3 seq# 37751 mem# 0: /u01/oradata/SCM2/redo03.log
Thu Jun 27 15:25:30 2013
Thread 1 advanced to log sequence 37752 (LGWR switch)
Current log# 4 seq# 37752 mem# 0: /u01/oradata/SCM2/redo04.log
Thu Jun 27 15:32:20 2013
ORA-00060: Deadlock detected. More info in file
/u01/app/oracle/admin/SCM2/bdump/scm2_s001_14052.trc.
Thu Jun 27 15:35:05 2013
Thread 1 advanced to log sequence 37753 (LGWR switch)
Current log# 5 seq# 37753 mem# 0: /u01/oradata/SCM2/redo05.log
Thu Jun 27 15:43:11 2013
Thread 1 advanced to log sequence 37754 (LGWR switch)
Current log# 1 seq# 37754 mem# 0: /u01/oradata/SCM2/redo01.log
Thu Jun 27 15:49:58 2013
Thread 1 advanced to log sequence 37755 (LGWR switch)
Current log# 6 seq# 37755 mem# 0: /u01/oradata/SCM2/redo06.log
Thu Jun 27 16:01:25 2013
Thread 1 advanced to log sequence 37756 (LGWR switch)
Current log# 2 seq# 37756 mem# 0: /u01/oradata/SCM2/redo02.log
Thu Jun 27 16:12:14 2013
Thread 1 advanced to log sequence 37757 (LGWR switch)
Current log# 3 seq# 37757 mem# 0: /u01/oradata/SCM2/redo03.log
Thu Jun 27 16:24:10 2013
Thread 1 advanced to log sequence 37758 (LGWR switch)
归档告警日志文件
告警日志文件如果不加管理的话，那么文件会持续增长，有时候文件会变得非常大，不利于读写。一般建议将告警日志按天归档，归档文件保留三个月（视情况而定），下面来看看将告警日志文件归档的两个Shell脚本：
alert_log_archive.sh version 1
1.#***************************************************************
**********
2.#FileName:alert_log_archive.sh
3.#***************************************************************
**********
4.#Author:Kerry
5.#CreateDate:2013-07-02
6.# blogs :/kerrycode
7.#Description:this script is made the alert log archived ever
y day
8.#***************************************************************
**********
9.
10.#!/bin/bash
11.
12.date=`date+%Y%m%d`
13.
14.alert_log_path="$ORACLE_BASE/admin/$ORACLE_SID/bdump"
15.
16.alert_log_file="alert_$ORACLE_SID.log"
17.
18.alert_arc_file="alert_$ORACLE_SID.log""."${date}
19.
20.cd ${alert_log_path};
21.
22.
23.if[ ! -e "${alert_log_file}" ];then
24.echo"the alert log didn't exits, please check file path
is correct!";
25.exit;
26.fi
27.
28.
29.if[ -e ${alert_arc_file} ];then
30.
31.echo"the alert log file have been archived!"
32.
33.else
34.
35.cat ${alert_log_file}>> ${alert_arc_file}
36.
37.cat/dev/null> ${alert_log_file}
38.
39.fi