如何清理Oracle11g RAC日志文件

Posted 2023-04-17

参考技术A 一、查看文件系统使用率
db:/home/oracle$ df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 2.00 0.49 76% 14384 11% /
/dev/hd2 8.00 4.75 41% 77263 7% /usr
/dev/hd9var 2.00 1.03 49% 13269 6% /var
/dev/hd3 10.00 9.49 6% 2237 1% /tmp
/dev/hd1 6.00 4.00 34% 2995 1% /home
/dev/hd11admin 0.50 0.50 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 0.50 0.30 41% 9075 12% /opt
/dev/livedump 0.50 0.50 1% 4 1% /var/adm/ras/livedump
/dev/bnmslv 2.00 0.82 60% 42605 19% /bnms
/dev/db7_oraclelv 99.50 15.18 85% 377711 10% /oracle

二、切换到grid用户
db:/home/oracle$ su - grid
grid's Password:

db:/home/grid$ cd $ORACLE_BASE
db:/oracle/app/oracle$ ls
Clusterware db diag db osw osw.tar tfa
db:/oracle/app/oracle$ cd diag
db:/oracle/app/oracle/diag$ ls
asm rdbms tnslsnr
db:/oracle/app/oracle/diag$ cd tns*
db:/oracle/app/oracle/diag/tnslsnr$ ls
db
db:/oracle/app/oracle/diag/tnslsnr$ cd *
db:/oracle/app/oracle/diag/tnslsnr/db$ ls
listener listener_2 listener_3 listener_scan1
db:/oracle/app/oracle/diag/tnslsnr/db$ du -sg *
9.52 listener
16.79 listener_2
3.44 listener_3
0.00 listener_scan1
db:/oracle/app/oracle/diag/tnslsnr/db$ cd listener
db:/oracle/app/oracle/diag/tnslsnr/db/listener$ cd trace
db:/oracle/app/oracle/diag/tnslsnr/db/listener/trace$ ls -l
total 6802512
-rw-r----- 1 grid oinstall 3482428458 Jun 08 09:56 listener.log
db:/oracle/app/oracle/diag/tnslsnr/db/listener/trace$ >listener.log
db:/oracle/app/oracle/diag/tnslsnr/db/listener/trace$ cd ..
db:/oracle/app/oracle/diag/tnslsnr/db/listener$ cd ..
db:/oracle/app/oracle/diag/tnslsnr/db$ cd listener_2
db:/oracle/app/oracle/diag/tnslsnr/db/listener_2$ cd trace
db:/oracle/app/oracle/diag/tnslsnr/db/listener_2/trace$ ls -l
total 12964296
-rw-r----- 1 grid oinstall 6637075895 Jun 08 09:56 listener_2.log
db:/oracle/app/oracle/diag/tnslsnr/db/listener_2/trace$ >listener_2.log
db:/oracle/app/oracle/diag/tnslsnr/db/listener_2/trace$ cd ..
db:/oracle/app/oracle/diag/tnslsnr/db/listener_2$ cd ..
db:/oracle/app/oracle/diag/tnslsnr/db$ cd listener_3
db:/oracle/app/oracle/diag/tnslsnr/db/listener_3$ cd trace
db:/oracle/app/oracle/diag/tnslsnr/db/listener_3/trace$ ls -l
total 2497368
-rw-r----- 1 grid oinstall 1278425004 Jun 08 09:57 listener_3.log
-rw-r----- 1 grid oinstall 0 Apr 20 00:55 ora_66915652_1.trc
db:/oracle/app/oracle/diag/tnslsnr/db/listener_3/trace$ >listener_3.log
db:/oracle/app/oracle/diag/tnslsnr/db/listener_3/trace$ cd

三、清理文件监听alert日志
db:/home/grid$ adrci

ADRCI: Release 11.2.0.3.0 - Production on Wed Jun 8 09:57:56 2016

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

ADR base = "/oracle/app/oracle"
adrci> show home
ADR Homes:
diag/asm/+asm/+ASM5
diag/rdbms/dbsale/dbsaleinst5
diag/tnslsnr/db/listener
diag/tnslsnr/db/listener_2
diag/tnslsnr/db/listener_3
diag/tnslsnr/db/listener_scan1
adrci> set home diag/tnslsnr/db/listener
adrci> purge -age 0 -type alert
adrci> set home diag/tnslsnr/db/listener_2
adrci> purge -age 0 -type alert
adrci> set home diag/tnslsnr/db/listener_3
adrci> purge -age 0 -type alert
adrci>
adrci>
adrci> exit

四、确认清理后的大小
db:/home/grid$ df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 2.00 0.49 76% 14384 11% /
/dev/hd2 8.00 4.75 41% 77263 7% /usr
/dev/hd9var 2.00 1.03 49% 13269 6% /var
/dev/hd3 10.00 9.49 6% 2237 1% /tmp
/dev/hd1 6.00 4.00 34% 2995 1% /home
/dev/hd11admin 0.50 0.50 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 0.50 0.30 41% 9075 12% /opt
/dev/livedump 0.50 0.50 1% 4 1% /var/adm/ras/livedump
/dev/bnmslv 2.00 0.82 60% 42611 19% /bnms
/dev/db7_oraclelv 99.50 44.88 55% 375759 4% /oracle
db:/home/grid$

如果查出来的结果还是很大。就切换到oracle用户。进入$ORACLE_BASE/diag/rdbms/db_name/instance_name/trace

清理一些trc文件或者alert日志。

SQLServer2008 清理日志文件

sql 在使用中每次查询都会生成日志，但是如果你长久不去清理，可能整个硬盘都堆满哦，我就遇到这样的情况。下面我们一起来学习一下如何清理这个日志吧

SQL2008清空删除日志:

--注：DBNAME就是你要清理的数据库名称
USE [master]
GO
ALTER DATABASE DBNAME SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE DBNAME SET RECOVERY SIMPLE --简单模式
GO
USE DBNAME
GO
DBCC SHRINKFILE (N‘DBNAME_log‘ , 11, TRUNCATEONLY) 

GO

 --如果不知道日志文件在sys.database_files里是什么名字的话，可以用以下注释的语句进行查询

--USE DBNAME
--GO

--SELECT file_id, name FROM sys.database_files;

USE [master]
GO
ALTER DATABASE DBNAME SET RECOVERY FULL WITH NO_WAIT
GO
ALTER DATABASE DBNAME SET RECOVERY FULL --还原为完全模式
GO